[CentOS] small window manager

[Paul Bijnens]

What is an alternative X window manager, supported by CentOS,
that has very small memory footprint?

I want to avoid twm, because it defaults to interactive placement when
not giving geometry options.  No other requirements.

--
Paul Bijnens, xplanation Technology ServicesTel  +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUMFax  +32 16 397.512
http://www.xplanation.com/  email:  [EMAIL PROTECTED]
***
* I think I've got the hang of it now:  exit, ^D, ^C, ^\, ^Z, ^Q, ^^, *
* F6, quit, ZZ, :q, :q!, M-Z, ^X^C, logoff, logout, close, bye, /bye, *
* stop, end, F3, ~., ^]c, +++ ATH, disconnect, halt,  abort,  hangup, *
* PF4, F20, ^X^X, :D::D, KJOB, F14-f-e, F8-e,  kill -1 $$,  shutdown, *
* init 0, kill -9 1, Alt-F4, Ctrl-Alt-Del, AltGr-NumLock, Stop-A, ... *
* ...  "Are you sure?"  ...   YES   ...   Phew ...   I'm out  *
***
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Re: [CentOS] small window manager

[Ignacio Vazquez-Abrams]

On Tue, 2008-09-02 at 11:01 +0200, Paul Bijnens wrote:
> What is an alternative X window manager, supported by CentOS,
> that has very small memory footprint?
> 
> I want to avoid twm, because it defaults to interactive placement when
> not giving geometry options.  No other requirements.

Within CentOS there's xfwm. If you're willing to look outside then
there's matchbox and wmx.

-- 
Ignacio Vazquez-Abrams <[EMAIL PROTECTED]>

PLEASE don't CC me; I'm already subscribed


signature.asc
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Re: [CentOS] small window manager

[Pintér Tibor]

Paul Bijnens wrote:


What is an alternative X window manager, supported by CentOS,
that has very small memory footprint?

I want to avoid twm, because it defaults to interactive placement when
not giving geometry options.  No other requirements.



dwm, fwm, xfce, fluxbox?

ps: your signature is very nice, but... ehh rings a bell?

t
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RE: [CentOS] small window manager

[Geoff Galitz]

I use XFCE for my resource starved environments (cluster simulations using
virtualization environments).  It works well and integrates nicely into the
Centos deployments.

-geoff


Geoff Galitz
Blankenheim NRW, Deutschland
http://www.galitz.org


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Paul Bijnens
Sent: Dienstag, 2. September 2008 11:02
To: CentOS mailing list
Subject: [CentOS] small window manager


What is an alternative X window manager, supported by CentOS,
that has very small memory footprint?

...

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Re: [CentOS] Changing swap resume signature location

[Karanbir Singh]

Patrice Guay wrote:

I cannot find the /etc/initramfs-tools directory on my system. Which
package provides it under CentOS 5?



isnt that just mkinitrd on CentOS ?


--
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[CentOS] Unable to compile mod_jk on Centos 5.2 64-bit

[ankush grover]

Hi Friends,

I am trying to compile mod_jk on Centos 5.2 64-bit but I am getting
apxs not found. Whereas apxs is already there on the server

type apxs
apxs is /usr/sbin/apxs


./configure CFLAGS=' -arch x86_64 ' APXSLDFLAGS=' -arch x86_64 '
--with-apxs=/usr/sbin/apxs

checking build system type... x86_64-unknown-linux-gnu

checking host system type... x86_64-unknown-linux-gnu

checking target system type... x86_64-unknown-linux-gnu

checking for a BSD-compatible install... /usr/bin/install -c

checking whether build environment is sane... yes

checking for gawk... gawk

checking whether make sets $(MAKE)... yes

checking for test... /usr/bin/test

checking for rm... /bin/rm

checking for grep... /bin/grep

checking for echo... /bin/echo

checking for sed... /bin/sed

checking for cp... /bin/cp

checking for mkdir... /bin/mkdir

need to check for Perl first, apxs depends on it...

checking for perl... /usr/bin/perl

could not find /usr/sbin/apxs

configure: error: You must specify a valid --with-apxs path


httpd-devel is already installed on this server but still the error persisting.

Installed Packages
httpd.x86_64 2.2.3-11.el5_1.centos. installed
httpd-devel.x86_64   2.2.3-11.el5_1.centos. installed
httpd-manual.x86_64  2.2.3-11.el5_1.centos. installed


Below is the config.log file


This file contains any messages produced by compilers while

running configure, to aid debugging if configure makes a mistake.



It was created by configure, which was

generated by GNU Autoconf 2.60.  Invocation command line was



  $ ./configure CFLAGS=-arch x86_64 APXSLDFLAGS=-arch x86_64
--with-apxs=/usr/sbin/apxs



## - ##

## Platform. ##

## - ##



hostname = webserver.example.com

uname -m = x86_64

uname -r = 2.6.18-92.el5

uname -s = Linux

uname -v = #1 SMP Tue Jun 10 18:51:06 EDT 2008



/usr/bin/uname -p = unknown

/bin/uname -X = unknown



/bin/arch  = x86_64

/usr/bin/arch -k   = unknown

/usr/convex/getsysinfo = unknown

/usr/bin/hostinfo  = unknown

/bin/machine   = unknown

/usr/bin/oslevel   = unknown

/bin/universe  = unknown



PATH: /usr/kerberos/sbin

PATH: /usr/kerberos/bin

PATH: /usr/local/sbin

PATH: /usr/local/bin

PATH: /sbin

PATH: /bin

PATH: /usr/sbin

PATH: /usr/bin

PATH: /root/bin



/configure CFLAGS=' -arch x86_64 ' APXSLDFLAGS=' -arch x86_64 '
--with-apxs=/usr/sbin/apxs

checking build system type... x86_64-unknown-linux-gnu

checking host system type... x86_64-unknown-linux-gnu

checking target system type... x86_64-unknown-linux-gnu

checking for a BSD-compatible install... /usr/bin/install -c

checking whether build environment is sane... yes

checking for gawk... gawk

checking whether make sets $(MAKE)... yes

checking for test... /usr/bin/test

checking for rm... /bin/rm

checking for grep... /bin/grep

checking for echo... /bin/echo

checking for sed... /bin/sed

checking for cp... /bin/cp

checking for mkdir... /bin/mkdir

need to check for Perl first, apxs depends on it...

checking for perl... /usr/bin/perl

could not find /usr/sbin/apxs

configure: error: You must specify a valid --with-apxs path







cat config.log | more

This file contains any messages produced by compilers while

running configure, to aid debugging if configure makes a mistake.



It was created by configure, which was

generated by GNU Autoconf 2.60.  Invocation command line was



  $ ./configure CFLAGS=-arch x86_64 APXSLDFLAGS=-arch x86_64
--with-apxs=/usr/sbin/apxs



## - ##

## Platform. ##

## - ##



hostname = webserver.example.com

uname -m = x86_64

uname -r = 2.6.18-92.el5

uname -s = Linux

uname -v = #1 SMP Tue Jun 10 18:51:06 EDT 2008



/usr/bin/uname -p = unknown

/bin/uname -X = unknown



/bin/arch  = x86_64

/usr/bin/arch -k   = unknown

/usr/convex/getsysinfo = unknown

/usr/bin/hostinfo  = unknown

/bin/machine   = unknown

/usr/bin/oslevel   = unknown

/bin/universe  = unknown



PATH: /usr/kerberos/sbin

PATH: /usr/kerberos/bin

PATH: /usr/local/sbin

PATH: /usr/local/bin

PATH: /sbin

PATH: /bin

PATH: /usr/sbin

PATH: /usr/bin

PATH: /root/bin











## --- ##

## Core tests. ##

## --- ##



configure:1996: checking build system type

configure:2014: result: x86_64-unknown-linux-gnu

configure:2036: checking host system type

configure:2051: result: x86_64-unknown-linux-gnu

configure:2073: checking target system type

configure:2088: result: x86_64-unknown-linux-gnu

configure:2134: checking for a BSD-compatible install

configure:2190: result: /usr/bin/install -c

configure:2201: checking whether build environment is sane

configure:2244: result: yes

configure:2309: checking for gawk

configure:2325: found /bin/gawk

configure:2336: result: gawk

configure:2347: checking whether make sets $(MAKE)

configure:2368: result: yes

configure:2563: checking for test

co

Re: [CentOS] Unable to compile mod_jk on Centos 5.2 64-bit

[Farkas Levente]

ankush grover wrote:
> Hi Friends,
> 
> I am trying to compile mod_jk on Centos 5.2 64-bit but I am getting
> apxs not found. Whereas apxs is already there on the server

why not use jpackage packages?

-- 
  Levente   "Si vis pacem para bellum!"
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[CentOS] Backup and reinstall a CentOS server

[josh donovan]

I've got a CentOS server that crashes due to a bad hard disk. I have got a 
spare disk and need to format and reinstall CentOS from the SERVER CD. Backup 
and reinstall is a major PITA because of some of the customisations that I've 
done e.g. the DNS Server is set to log queries (the default does not do this). 
Any tips on :-

- backing up and reinstalling (is a script available)?
- is the SERVER CD still 4.4?
- Any suggestions on BIND to log queries without SELINUX throwing a fuss?


Thanks for any help!
Josh





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Re: [CentOS] Backup and reinstall a CentOS server

[Jussi Hirvi]

josh donovan <[EMAIL PROTECTED]> escribio (2.9.2008 13:42)
> I've got a CentOS server that crashes due to a bad hard disk. I have got a
> spare disk and need to format and reinstall CentOS from the SERVER CD. Backup
> and reinstall is a major PITA because of some of the customisations that I've
> done e.g. the DNS Server is set to log queries (the default does not do this).
> Any tips on :-
> 
> - backing up and reinstalling (is a script available)?
> - is the SERVER CD still 4.4?
> - Any suggestions on BIND to log queries without SELINUX throwing a fuss?

This may not be directly useful to you.

As a general strategy, I have been thinking of making / and other important
partitions (if any) raid1 at system install - even when there is no second
disk. Someone just wrote that even the /boot partition can be raid1.

This way it will be easy later to clone the disk. Just bring in a blank
disk, format, add to the raid array and let it sync. :-) Then you would
still have to install grub, if the disk needs be bootable, but that's fast.

- Jussi

--
Jussi Hirvi  *  Green Spot
Topeliuksenkatu 15 C  *  00250 Helsinki  *  Finland
Tel. & fax +358 9 493 981  *  SMS +358 40 771 2098
[EMAIL PROTECTED]  *  http://www.greenspot.fi


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Re: [CentOS] Backup and reinstall a CentOS server

[Marco Fretz]

josh donovan wrote:
> I've got a CentOS server that crashes due to a bad hard disk. I have got a 
> spare disk and need to format and reinstall CentOS from the SERVER CD. Backup 
> and reinstall is a major PITA because of some of the customisations that I've 
> done e.g. the DNS Server is set to log queries (the default does not do 
> this). Any tips on :-
> 
> - backing up and reinstalling (is a script available)?

If you want to copy the whole server, use cpio. We use this to convert
phys servers to virtual.

find / | cpio -o -Hnewc | ssh -c blowfish  "cpio -u -i -m
-d -Hnewc"

or use the -p switch in cpio for pass-through mode. see the cpio info pages.

You might exclude /dev, /sys/, /proc, etc

> - is the SERVER CD still 4.4?

the one in the web, no. would be difficult to find one... with the cpio
trick you dont need a CD to reinstall. just attach the new HD do the
runnig server...

but, you might want to use cenots 5? my recommendation at all is to do a
fresh cenots 5 install, copy over and merge the configs...

> - Any suggestions on BIND to log queries without SELINUX throwing a fuss?

Is selinux obstructing query log? do you use "rndc querylog" to turn it on?

> 
> 
> Thanks for any help!
> Josh
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Re: [CentOS] Re: Help me

[andylockran]

Karanbir Singh wrote:

andylockran wrote:

In thunderbird, it's very easy to change.

Tools>Accounts>Composition>Automatically Start My Reply ABOVE/BELOW 
The Quote.




While talking about Thunderbird, some of you might also want to look at 
:  https://addons.mozilla.org/en-US/thunderbird/addon/347



Thanks Karanbir.. good link.

andylockran
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Re: [CentOS] Backup and reinstall a CentOS server

[Marco Fretz]

Jussi Hirvi wrote:
> This may not be directly useful to you.
> 
> As a general strategy, I have been thinking of making / and other important
> partitions (if any) raid1 at system install - even when there is no second
> disk. Someone just wrote that even the /boot partition can be raid1.

Yes, the /boot partition can be md raid. But it can't be LVM. We're
using md raid for all server that have no hardware raid controllers.
GRUB can be installed on both drives at the same time, no problem.

> This way it will be easy later to clone the disk. Just bring in a blank
> disk, format, add to the raid array and let it sync. :-) Then you would
> still have to install grub, if the disk needs be bootable, but that's fast.

Good idea and I think it should be no performance problem. But use LVM!
Don't do md raid for each partition you need. Make 2 md raids and put
LVM on the 2nd (first for /boot) and use logicalvolumes for your
partitions...

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Re: [CentOS] Backup and reinstall a CentOS server

[Sergej Kandyla]

Marco Fretz wrote:

If you want to copy the whole server, use cpio. We use this to convert
phys servers to virtual.

find / | cpio -o -Hnewc | ssh -c blowfish  "cpio -u -i -m
-d -Hnewc"
  

Also you could use dump\restore utilites

mount /dev/hdb1 /mnt/hdb1
cd /mnt/hdb1
dump -0uan -f - /boot  | restore -r -f -


http://linuxscrew.com/2007/08/13/move-linux-to-another-hard-drive-dump-restore-backup/


  

- Any suggestions on BIND to log queries without SELINUX throwing a fuss?



You could use dns logining.
some example from one of my servers:

options {
.
};

logging {
channel default_log {
   file "/var/log/named.log" size 5k;
   severity info;
   print-time yes;
   print-category yes;
   print-severity yes;
};
channel more_log {
   file "/var/log/named_extend.log" size 2k;
   severity info;
   print-time yes;
   print-category yes;
   print-severity yes;
};

category default { default_log; };
category xfer-in { default_log; };
category xfer-out { default_log; };
category notify { default_log; };
category network { default_log; };

category security { more_log; };
category resolver { more_log; };
category client { more_log; };
category unmatched { more_log; };
category database { more_log; };
category lame-servers { null; };
category queries { more_log;};
};


--
Best Wishes,
PAIX-UANIC | SK3929-RIPE

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RE: [CentOS] small window manager

[John Kordash]

> What is an alternative X window manager, supported by CentOS,
> that has very small memory footprint?
>
> I want to avoid twm, because it defaults to interactive placement when
> not giving geometry options.  No other requirements.

You found twm's 'RandomPlacment' unsuitable?

-John
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Re: [CentOS] kickstart problems

[Paolo Supino]

On Tue, Sep 2, 2008 at 8:14 AM, nate <[EMAIL PROTECTED]> wrote:

> Paolo Supino wrote:
> > Hi Nate
> >
>
> > 3: After the error comes up I get the HTTP setup configuration screen
> with
> > the source website (in IP) and CentOS directory as I entered them in the
> > pxeconfiguration file and as it appears in the kickstart configuration
> file
> > and all I have to do is press the 'OK' button to continue the
> installation
> > to a successful completion.
>
> If that's the case the next most likely culprit is
>
> > url --url http://192.168.11.1/source
>
>
> Just because the PXE boot loader can download the kickstart
> config does not mean that the installation process will work
> with that NIC.
>
> Also I've had lots of broadcom systems not work with kickstart over
> the years, it's not uncommon for newer systems to have newer
> revs of the chipsets and those revs not being supported by the
> installer.
>
> But it sounds like in your case it does work, so I would look
> at the url above, as it likely is the cause of the problem. Check
> the http access logs on the server for 404s and similar errors.
>
> nate
>
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>


Hi Nate

  After figuring what I was doing wrong (see previous reply ...) I started
going through each of my systems in order to boot them and install CentOS
5.2 on each. For the most part it works, but only for the most part? Because
once in a few boots (not machine specific) anaconda stops and either asks me
what interface it needs to configure or fails to load 'stage2.img' from the
web server on 192.168.11.1 ... All cables are good cables. The network
switch is a Cisco 3750G with no configuration) and all the NICs are broadcom
with firmware 3.8.9. Can you throw a guess where the problem might be lying
(I hate inconsistencies)?


--
TIA
Paolo
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Re: [CentOS] kickstart problems

[Romeo Ninov]

Paolo Supino  wrote / napísal(a):



On Tue, Sep 2, 2008 at 8:14 AM, nate <[EMAIL PROTECTED] 
> wrote:


Paolo Supino wrote:
> Hi Nate
>

> 3: After the error comes up I get the HTTP setup configuration
screen with
> the source website (in IP) and CentOS directory as I entered
them in the
> pxeconfiguration file and as it appears in the kickstart
configuration file
> and all I have to do is press the 'OK' button to continue the
installation
> to a successful completion.

If that's the case the next most likely culprit is

> url --url http://192.168.11.1/source


Just because the PXE boot loader can download the kickstart
config does not mean that the installation process will work
with that NIC.

Also I've had lots of broadcom systems not work with kickstart over
the years, it's not uncommon for newer systems to have newer
revs of the chipsets and those revs not being supported by the
installer.

But it sounds like in your case it does work, so I would look
at the url above, as it likely is the cause of the problem. Check
the http access logs on the server for 404s and similar errors.

nate

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Hi Nate

  After figuring what I was doing wrong (see previous reply ...) I 
started going through each of my systems in order to boot them and 
install CentOS 5.2 on each. For the most part it works, but only for 
the most part? Because once in a few boots (not machine specific) 
anaconda stops and either asks me what interface it needs to configure 
or fails to load 'stage2.img' from the web server on 192.168.11.1 
 ... All cables are good cables. The network 
switch is a Cisco 3750G with no configuration) and all the NICs are 
broadcom with firmware 3.8.9.  Can you throw a guess 
where the problem might be lying (I hate inconsistencies)?




Have you check apache logs for something. Check also the server messages
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[CentOS] NFS static ports configuration

[admin]

A couple of RHEL5 books I'm reading at the moment suggest port numbers 
above 1024 for statd, lockd, mountd and rquotad (eg 38001-38006 or 
32764-32767) when configuring NFS to work with a firewall.


The default /etc/sysconfig/nfs on CentOS5 however has defaults under 
1024, such as


mountd  892
statd   662
rquotad 875

Is there something security-related going on here that I'm not aware of, 
or some other explanation? Neither text mentions the use of ports under 
1024 at all.


Thanks
Mick
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Re: [CentOS] kickstart problems

[Paolo Supino]

On Tue, Sep 2, 2008 at 2:17 PM, Romeo Ninov <[EMAIL PROTECTED]> wrote:

>
>
> Paolo Supino  wrote / napísal(a):
>
>>
>>
>> On Tue, Sep 2, 2008 at 8:14 AM, nate <[EMAIL PROTECTED] > [EMAIL PROTECTED]>> wrote:
>>
>>Paolo Supino wrote:
>>> Hi Nate
>>>
>>
>>> 3: After the error comes up I get the HTTP setup configuration
>>screen with
>>> the source website (in IP) and CentOS directory as I entered
>>them in the
>>> pxeconfiguration file and as it appears in the kickstart
>>configuration file
>>> and all I have to do is press the 'OK' button to continue the
>>installation
>>> to a successful completion.
>>
>>If that's the case the next most likely culprit is
>>
>>> url --url http://192.168.11.1/source
>>
>>
>>Just because the PXE boot loader can download the kickstart
>>config does not mean that the installation process will work
>>with that NIC.
>>
>>Also I've had lots of broadcom systems not work with kickstart over
>>the years, it's not uncommon for newer systems to have newer
>>revs of the chipsets and those revs not being supported by the
>>installer.
>>
>>But it sounds like in your case it does work, so I would look
>>at the url above, as it likely is the cause of the problem. Check
>>the http access logs on the server for 404s and similar errors.
>>
>>nate
>>
>>___
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>>http://lists.centos.org/mailman/listinfo/centos
>>
>>
>>
>> Hi Nate
>>
>>  After figuring what I was doing wrong (see previous reply ...) I started
>> going through each of my systems in order to boot them and install CentOS
>> 5.2 on each. For the most part it works, but only for the most part? Because
>> once in a few boots (not machine specific) anaconda stops and either asks me
>> what interface it needs to configure or fails to load 'stage2.img' from the
>> web server on 192.168.11.1  ... All cables are good
>> cables. The network switch is a Cisco 3750G with no configuration) and all
>> the NICs are broadcom with firmware 3.8.9.  Can you throw
>> a guess where the problem might be lying (I hate inconsistencies)?
>>
>>
>>  Have you check apache logs for something. Check also the server messages
>
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>

Hi Romeo

  Yes I did, and nothing shows up in either access_log or error_log :-(
I just had a node that stopped asking me for IP configuration (twice) and
only on the second time (checked on the server using tcpdump) did it
actually try to contact the server to retrieve network configuration
continue and it successfully retrieved 'stage2.img' from the web server :-(



--
TIA
Paolo
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[CentOS] Re: small window manager

[Michael Ekstrand]

Paul Bijnens <[EMAIL PROTECTED]>
writes:
> What is an alternative X window manager, supported by CentOS,
> that has very small memory footprint?

I'm not sure what your standard is for "supported by CentOS", but Window
Maker works well and is available from EPEL.

- Michael

-- 
mouse, n: A device for pointing at the xterm in which you want to type.
Confused by the strange files?  I cryptographically sign my messages.
For more information see .

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Re: [CentOS] Backup and reinstall a CentOS server

[admin]

Yes, the /boot partition can be md raid. But it can't be LVM. We're
using md raid for all server that have no hardware raid controllers.
GRUB can be installed on both drives at the same time, no problem.

Good idea and I think it should be no performance problem. But use LVM!
Don't do md raid for each partition you need. Make 2 md raids and put
LVM on the 2nd (first for /boot) and use logicalvolumes for your
partitions...


I believe that if /boot is on RAID1, that md partition has to be on one 
of the first two disks (eg hda, hdb)?


Is there any problem with having /boot on a RAID1 partition across 4 
disks as follows?


/boot   / (LVM)
hda RAID1   RAID5
hdb RAID1   RAID5
hdc RAID1   RAID5
hdd RAID1   RAID5

What about swap? It is best on RAID1, RAID5, LVM, something else or 
doesn't matter?


Mick
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Re: [CentOS] kickstart problems

[Romeo Ninov]

Paolo Supino  wrote / napísal(a):



On Tue, Sep 2, 2008 at 2:17 PM, Romeo Ninov <[EMAIL PROTECTED] 
> wrote:




Paolo Supino  wrote / napísal(a):



On Tue, Sep 2, 2008 at 8:14 AM, nate <[EMAIL PROTECTED]

>> wrote:

   Paolo Supino wrote:
   > Hi Nate
   >

   > 3: After the error comes up I get the HTTP setup
configuration
   screen with
   > the source website (in IP) and CentOS directory as I entered
   them in the
   > pxeconfiguration file and as it appears in the kickstart
   configuration file
   > and all I have to do is press the 'OK' button to continue the
   installation
   > to a successful completion.

   If that's the case the next most likely culprit is

   > url --url http://192.168.11.1/source


   Just because the PXE boot loader can download the kickstart
   config does not mean that the installation process will work
   with that NIC.

   Also I've had lots of broadcom systems not work with
kickstart over
   the years, it's not uncommon for newer systems to have newer
   revs of the chipsets and those revs not being supported by the
   installer.

   But it sounds like in your case it does work, so I would look
   at the url above, as it likely is the cause of the problem.
Check
   the http access logs on the server for 404s and similar errors.

   nate

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Hi Nate

 After figuring what I was doing wrong (see previous reply
...) I started going through each of my systems in order to
boot them and install CentOS 5.2 on each. For the most part it
works, but only for the most part? Because once in a few boots
(not machine specific) anaconda stops and either asks me what
interface it needs to configure or fails to load 'stage2.img'
from the web server on 192.168.11.1 
 ... All cables are good cables. The
network switch is a Cisco 3750G with no configuration) and all
the NICs are broadcom with firmware 3.8.9. 
 Can you throw a guess where the problem might
be lying (I hate inconsistencies)?


Have you check apache logs for something. Check also the server
messages

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Hi Romeo

  Yes I did, and nothing shows up in either access_log or error_log :-(
I just had a node that stopped asking me for IP configuration (twice) 
and only on the second time (checked on the server using tcpdump) did 
it actually try to contact the server to retrieve network 
configuration continue and it successfully retrieved 'stage2.img' from 
the web server :-(


Paolo, what about DHCP or bootp servers. Check the logs, flush ARP cache 
from server(s)

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Re: [CentOS] small window manager

[Paul Bijnens]

On 2008-09-02 14:07, John Kordash wrote:

What is an alternative X window manager, supported by CentOS,
that has very small memory footprint?

I want to avoid twm, because it defaults to interactive placement when
not giving geometry options.  No other requirements.


You found twm's 'RandomPlacment' unsuitable?


That's an even better answer.
I did not read that far in the man page yet.
Thanks for pointing it out.


--
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Technologielaan 21 bus 2, B-3001 Leuven, BELGIUMFax  +32 16 397.512
http://www.xplanation.com/  email:  [EMAIL PROTECTED]
***
* I think I've got the hang of it now:  exit, ^D, ^C, ^\, ^Z, ^Q, ^^, *
* F6, quit, ZZ, :q, :q!, M-Z, ^X^C, logoff, logout, close, bye, /bye, *
* stop, end, F3, ~., ^]c, +++ ATH, disconnect, halt,  abort,  hangup, *
* PF4, F20, ^X^X, :D::D, KJOB, F14-f-e, F8-e,  kill -1 $$,  shutdown, *
* init 0, kill -9 1, Alt-F4, Ctrl-Alt-Del, AltGr-NumLock, Stop-A, ... *
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Re: [CentOS] kickstart problems

[Paolo Supino]

On Tue, Sep 2, 2008 at 3:07 PM, Romeo Ninov <[EMAIL PROTECTED]> wrote:

>
>
> Paolo Supino  wrote / napísal(a):
>
>>
>>
>> On Tue, Sep 2, 2008 at 2:17 PM, Romeo Ninov <[EMAIL PROTECTED] > [EMAIL PROTECTED]>> wrote:
>>
>>
>>
>>Paolo Supino  wrote / napísal(a):
>>
>>
>>
>>On Tue, Sep 2, 2008 at 8:14 AM, nate <[EMAIL PROTECTED]
>>
>>>
>>>> wrote:
>>
>>   Paolo Supino wrote:
>>   > Hi Nate
>>   >
>>
>>   > 3: After the error comes up I get the HTTP setup
>>configuration
>>   screen with
>>   > the source website (in IP) and CentOS directory as I entered
>>   them in the
>>   > pxeconfiguration file and as it appears in the kickstart
>>   configuration file
>>   > and all I have to do is press the 'OK' button to continue the
>>   installation
>>   > to a successful completion.
>>
>>   If that's the case the next most likely culprit is
>>
>>   > url --url http://192.168.11.1/source
>>
>>
>>   Just because the PXE boot loader can download the kickstart
>>   config does not mean that the installation process will work
>>   with that NIC.
>>
>>   Also I've had lots of broadcom systems not work with
>>kickstart over
>>   the years, it's not uncommon for newer systems to have newer
>>   revs of the chipsets and those revs not being supported by the
>>   installer.
>>
>>   But it sounds like in your case it does work, so I would look
>>   at the url above, as it likely is the cause of the problem.
>>Check
>>   the http access logs on the server for 404s and similar errors.
>>
>>   nate
>>
>>   ___
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>>>
>>
>>   http://lists.centos.org/mailman/listinfo/centos
>>
>>
>>
>>Hi Nate
>>
>> After figuring what I was doing wrong (see previous reply
>>...) I started going through each of my systems in order to
>>boot them and install CentOS 5.2 on each. For the most part it
>>works, but only for the most part? Because once in a few boots
>>(not machine specific) anaconda stops and either asks me what
>>interface it needs to configure or fails to load 'stage2.img'
>>from the web server on 192.168.11.1 
>> ... All cables are good cables. The
>>network switch is a Cisco 3750G with no configuration) and all
>>the NICs are broadcom with firmware 3.8.9. 
>> Can you throw a guess where the problem might
>>be lying (I hate inconsistencies)?
>>
>>
>>Have you check apache logs for something. Check also the server
>>messages
>>
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>>http://lists.centos.org/mailman/listinfo/centos
>>
>>
>> Hi Romeo
>>
>>  Yes I did, and nothing shows up in either access_log or error_log :-(
>> I just had a node that stopped asking me for IP configuration (twice) and
>> only on the second time (checked on the server using tcpdump) did it
>> actually try to contact the server to retrieve network configuration
>> continue and it successfully retrieved 'stage2.img' from the web server :-(
>>
>>  Paolo, what about DHCP or bootp servers. Check the logs, flush ARP cache
> from server(s)
>
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Hi Romeo

  The more systems I boot the more I'm starting to feel that it's hardware
problem related ... I just booted a system in which the ELOM says that NIC0
has 1 MAC address, but when I boot the system I saw on the network a
different MAC address altogether ...
  I'm checking at the lowest level: on the wire (using tcpdump) so if
nothing shows in the capture I'm sure I won't find anything in the logs :-(




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RE: [CentOS] kickstart problems

[Joseph L. Casale]

>Network autoconfiguration failed, most likely there is not
>a compatible driver for the network card in your system.

Paolo,
You are using multihomed systems, I remember a problem with pxe booting
whereby the install switched to the wrong nic and setup may fail as a result.

How are you statring these installs?

jlc
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[CentOS] Control IO related to a process

[Joseph L. Casale]

Is there a way to nice the IO on a process such as dd?
If not, what could be a way to control the IO level of
such a process from bogging down a server to severely.

Thanks,
jlc
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[CentOS] CN=Nasreddine Kroun/OU=Benefits/O=Vitech is out of the office.

[Nasreddine Kroun]

I will be out of the office starting  09/02/2008 and will not return until
09/04/2008.


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Re: [CentOS] kickstart problems

[Paolo Supino]

On Tue, Sep 2, 2008 at 4:01 PM, Joseph L. Casale
<[EMAIL PROTECTED]>wrote:

> >Network autoconfiguration failed, most likely there is not
> >a compatible driver for the network card in your system.
>
> Paolo,
> You are using multihomed systems, I remember a problem with pxe booting
> whereby the install switched to the wrong nic and setup may fail as a
> result.
>
> How are you statring these installs?
>
> jlc
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Hi Joseph

  WHat do you mean?




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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[David Dyer-Bennet]

On Sun, August 31, 2008 04:03, Ric Moore wrote:
>
> On Fri, 2008-08-29 at 10:51 -0500, David Dyer-Bennet wrote:

>> I've also still got a laptop that's probably older than him.  It runs
>> CP/M.
>
> I once had a pretty large collection of CP/M machines. I had three
> IMSAI's. a VDP-80 and two VDP-44's. I think I had every Televideo ever
> made, including the luggable and the server that ran MP/M. Altos,
> Osborn, and a bunch of others. Man, think of what CP/M could do running
> on a Pentium.  Ric

I got into the home computing scene late (the systems at work were so much
more powerful and attractive, and it was normal to play with them for
personal use).  But I've still got my very first computer, a DEC VT-180
"Robin" (a VT-100 terminal with a CP/M board in the card cage, and an
external pair of 5.25" floppies; mine actually has two pair of floppies,
and they've been upgraded to 400kb or some such).

The laptop is an Epson PX-8.  Software resided on PROM chips on little
carriers.  It had a built-in microcassette drive for data storage.

-- 
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Photos: http://dd-b.net/photography/gallery/
Dragaera: http://dragaera.info

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RE: [CentOS] kickstart problems

[Joseph L. Casale]

>WHat do you mean?

Do you boot from one of the NICS, or a CD, or what?
If you boot from a NIC via a TFTP server, you may be encountering the issue
I describe which simply needs a kernel arg to fix you up.
jlc
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Re: [CentOS] Control IO related to a process

[Lorenzo Quatrini]

Joseph L. Casale ha scritto:
> Is there a way to nice the IO on a process such as dd?
> If not, what could be a way to control the IO level of
> such a process from bogging down a server to severely.
> 

As I was told few days ago you cold nice the whole process, eg.

nice 19 if=/xxx of=/xxx bs=nnn

This should give all the other process priority over dd

Hope this helps

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Re: [CentOS] Control IO related to a process

[Lorenzo Quatrini]

Lorenzo Quatrini ha scritto:
> Joseph L. Casale ha scritto:
>> Is there a way to nice the IO on a process such as dd?
>> If not, what could be a way to control the IO level of
>> such a process from bogging down a server to severely.
>>
> 
> As I was told few days ago you cold nice the whole process, eg.
> 
> nice 19 if=/xxx of=/xxx bs=nnn
>

Obviously there is a typo...

nice 19 dd if=/xxx of=/xxx bs=nnn
^^

> This should give all the other process priority over dd
> 
> Hope this helps
> 
> --
> Regards
> Lorenzo Quatrini
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Re: [CentOS] kickstart problems

[Paolo Supino]

On Tue, Sep 2, 2008 at 4:18 PM, Joseph L. Casale
<[EMAIL PROTECTED]>wrote:

> >WHat do you mean?
>
> Do you boot from one of the NICS, or a CD, or what?
> If you boot from a NIC via a TFTP server, you may be encountering the issue
> I describe which simply needs a kernel arg to fix you up.
> jlc
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Hi Joseph

  I boot via NIC0 and my configurations are as follows:
pxe (for node3):
default ks
prompt 0
label ks
kernel vmlinuz
append initrd=initrd.img ramdisk_size=9216 ksdevice=bootif noapic
acpi=off ks=http://192.168.11.1/kickstart/n03.ks
ipappend 2

kickstart file (for node3):
# Kickstart file automatically generated by anaconda.

install
lang en_US.UTF-8
keyboard us
network --device eth0 --bootproto dhcp --hostname n003.example.com
network --device eth1 --onboot no --bootproto dhcp --hostname
n003.example.com
network --device eth2 --onboot no --bootproto dhcp --hostname
n003.example.com
network --device eth3 --onboot no --bootproto dhcp --hostname
n003.example.com
url --url http://192.168.11.1/source
rootpw --iscrypted ?
firewall --disabled
authconfig --enableshadow --enablemd5
selinux --disabled
timezone --utc Asia/Jerusalem
bootloader --location=mbr --driveorder=sda --append="noapic acpi=off"
# The following is the partition information you requested
# Note that any partitions you deleted are not expressed
# here so unless you clear all partitions first, this is
# not guaranteed to work
zerombr
clearpart --all --drives=sda
part /boot --fstype ext3 --size=100 --ondisk=sda
part pv.2 --size=0 --grow --ondisk=sda
volgroup VolGroup00 --pesize=32768 pv.2
.
.
.


If you made it all the way down here ... I did try to put ksdevice=eth0 in
the PXE configuration file, but it only made things worse :-(




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Re: [CentOS] kickstart problems

[nate]

Paolo Supino wrote:

>   I boot via NIC0 and my configurations are as follows:
> pxe (for node3):

Just to rule it out try plugging in all NICs to the same
switch/VLAN and kickstart again and see if it works better.
Sometimes the NIC detected as eth0 at PXE time is not the
same NIC as at installation time. My systems typically have
both NICs connected to the same switch(for redundancy using
bonding driver) so I often forget about this issue.

If it works then you can adjust the kickstart config's
ksdevice= option to point to the real NIC your system
will use.

nate

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Re: [CentOS] Control IO related to a process

[Peter Kjellstrom]

On Tuesday 02 September 2008, Joseph L. Casale wrote:
> Is there a way to nice the IO on a process such as dd?
> If not, what could be a way to control the IO level of
> such a process from bogging down a server to severely.

There is ionice (assuming CentOS-5) in the util-linux package. It's by no 
means perfect but unlike nice it atleast tries to do what you want :-)

Try it out.

/Peter


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Re: [CentOS] Control IO related to a process

[Sergej Kandyla]

Lorenzo Quatrini wrote:

Lorenzo Quatrini ha scritto:
  


nice 19 dd if=/xxx of=/xxx bs=nnn
^^

  

probably

- nice 19 dd if=/xxx of=/xxx bs=nnn
+ nice  -n 19dd if=/xxx of=/xxx bs=nnn

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Re: [CentOS] Control IO related to a process

[nate]

Lorenzo Quatrini wrote:

> As I was told few days ago you cold nice the whole process, eg.
>
> nice 19 if=/xxx of=/xxx bs=nnn
>
> This should give all the other process priority over dd

nice doesn't really do anything with respect to I/O.

The best way to control I/O in this manor is to physically
isolate it from the rest of the system(be it on a different
controller connected to different disks etc).

There's no real way in software that I'm aware of to prevent one
process from bogging down the whole system by consuming all of
the I/O capacity.

This would likely require process-level information on I/O
transactions, which I've never seen in Linux. I've heard it's
available in Solaris though (not sure if any sort of I/O QoS
is available in Solaris haven't used it in years).

nate

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RE: [CentOS] kickstart problems

[Joseph L. Casale]

>I boot via NIC0 and my configurations are as follows:

Yeah, that's what I thought.
Have a look at:
http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.2/html/Installation_Guide/ch-pxe.html
&
http://kbase.redhat.com/faq/FAQ_80_531.shtm

The latter might shed some light. I am thinking you need tweak that a bit.
jlc
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RE: [CentOS] Control IO related to a process

[Joseph L. Casale]

>nice doesn't really do anything with respect to I/O.

Yes I tried it and it never made a diff from one end of
the spectrum to the other:)

>The best way to control I/O in this manor is to physically
>isolate it from the rest of the system(be it on a different
>controller connected to different disks etc).

Well, not always possible!

I am going to try Peter's suggestion of ionice tonight.

Thanks everyone!
jlc
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Re: [CentOS] Control IO related to a process

[William L. Maltby]

On Tue, 2008-09-02 at 16:28 +0200, Lorenzo Quatrini wrote:
> Joseph L. Casale ha scritto:
> > Is there a way to nice the IO on a process such as dd?
> > If not, what could be a way to control the IO level of
> > such a process from bogging down a server to severely.
> > 
> 
> As I was told few days ago you cold nice the whole process, eg.
> 
> nice 19 if=/xxx of=/xxx bs=nnn
> 
> This should give all the other process priority over dd

Saw the type fix. Just want to mention that the "bs=" can have a
substantial beneficial effect. By increasing the blocksize to a relative
large value, the number of system and I/O calls is reduced. This *may*
reduce the adverse effects that you see on overall system
responsiveness.

I often use 8192, 16384 and even 8Mb, a "cylinder size".

Give it a try. YMMV.

> 
> Hope this helps
> 
> --
> Regards
> Lorenzo Quatrini
> 

-- 
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Re: [CentOS] kickstart problems

[Paolo Supino]

On Tue, Sep 2, 2008 at 5:04 PM, nate <[EMAIL PROTECTED]> wrote:

> Paolo Supino wrote:
>
> >   I boot via NIC0 and my configurations are as follows:
> > pxe (for node3):
>
> Just to rule it out try plugging in all NICs to the same
> switch/VLAN and kickstart again and see if it works better.
> Sometimes the NIC detected as eth0 at PXE time is not the
> same NIC as at installation time. My systems typically have
> both NICs connected to the same switch(for redundancy using
> bonding driver) so I often forget about this issue.
>
> If it works then you can adjust the kickstart config's
> ksdevice= option to point to the real NIC your system
> will use.
>
> nate
>
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Hi Nate

  It's a nice thing and I thought of doing it, but it's impractical and here
is why: I have 42 systems in this cabinet. Each system as 4 NICs and I only
have 1 48 port switch. If I had the additional switches to stack I would
have done it a long time ago (and I would have sniffed the network to see
where the heck it sending the packets). I checked all the systems that did
install successfully (right now stands at 29) and in all of them the MAC
address of NIC0 matches the MAC address for eth0 in Linux (which makes sense
otherwise the install would have hung up).




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[CentOS] SAS/SATA DAS

[Joseph L. Casale]

I need to replace a slow HP MSA20 that's a bottleneck right now (We are an HP 
shop).
HP's only option with 3.5" SATA drives is stuck at SATA I behind a SAS 
controller.
Dell makes an MD1000 that claims SATA II speeds behind a SAS Perc 5/E (Don't 
know anything about dell).

Anyone got any real world info they can share? I need 3.5" SATA II at least 12 
drives behind SAS,
I am not concerned about space and could use multiple 1u chassis if I had to.

Thanks!
jlc
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Re: [CentOS] kickstart problems

[Paolo Supino]

On Tue, Sep 2, 2008 at 5:10 PM, Joseph L. Casale
<[EMAIL PROTECTED]>wrote:

> >I boot via NIC0 and my configurations are as follows:
>
> Yeah, that's what I thought.
> Have a look at:
>
> http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.2/html/Installation_Guide/ch-pxe.html
> &
> http://kbase.redhat.com/faq/FAQ_80_531.shtm
>
> The latter might shed some light. I am thinking you need tweak that a bit.
> jlc
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Hi Joseph

  Since I have 4 NICs in each node the kickstart config file has 4 network
statements (one for each of the NICs). The --device eth0 appears in the
first network statement. The thing that I noticed that is missing in the
eth0 network statement is --onboot=yes (in the others it's --onboot=no).
Do you thing I should remove the other network statements from the kickstart
configuration file?





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Re: [CentOS] SAS/SATA DAS

[Rainer Duffner]

Joseph L. Casale schrieb:


I need to replace a slow HP MSA20 that’s a bottleneck right now (We 
are an HP shop).
HP’s only option with 3.5” SATA drives is stuck at SATA I behind a SAS 
controller.


Dell makes an MD1000 that claims SATA II speeds behind a SAS Perc 5/E 
(Don’t know anything about dell).


 

Anyone got any real world info they can share? I need 3.5” SATA II at 
least 12 drives behind SAS,


I am not concerned about space and could use multiple 1u chassis if I 
had to.





Promise VTRAK J610sS?

We use it with Solaris and ZFS - I'm not too keen on using LVM on more 
than a handful of disks.
IMO, 16 disks is probably the minimum to get some decent non-linear 
performance out of SATA.


If you have the money, you can go for a SUN J4500 ;-)




Rainer
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Re: [CentOS] kickstart problems

[nate]

Paolo Supino wrote:

>   It's a nice thing and I thought of doing it, but it's impractical and here
> is why: I have 42 systems in this cabinet. Each system as 4 NICs and I only
> have 1 48 port switch. If I had the additional switches to stack I would
> have done it a long time ago (and I would have sniffed the network to see
> where the heck it sending the packets). I checked all the systems that did
> install successfully (right now stands at 29) and in all of them the MAC
> address of NIC0 matches the MAC address for eth0 in Linux (which makes sense
> otherwise the install would have hung up).

I think you misunderstood.

Do it once, so you can see which NIC(s) are actually being used.

Then adjust the kickstart config(if needed) to specify the NIC(s)
you want to use.

nate

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[CentOS] Re: Help me

[Scott Silva]

on 9-1-2008 10:36 AM Martyn Hare spake the following:

Top is preferred, it's a standard just like it's a standard to put:
"
--  
[signature here]

"


And which "standard" is that? Is it in the RFC's?


I would "prefer" to *not* give a quarter of my income to the government, but 
then they would exercise their power to put me in jail. So I "choose" to do 
what is required, even though I would rather keep it!.




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Re: [CentOS] kickstart problems

[Paolo Supino]

On Tue, Sep 2, 2008 at 5:10 PM, Joseph L. Casale
<[EMAIL PROTECTED]>wrote:

> >I boot via NIC0 and my configurations are as follows:
>
> Yeah, that's what I thought.
> Have a look at:
>
> http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.2/html/Installation_Guide/ch-pxe.html
> &
> http://kbase.redhat.com/faq/FAQ_80_531.shtm
>
> The latter might shed some light. I am thinking you need tweak that a bit.
> jlc
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Hi Joseph

   After sending the last reply I fixed the kickstart config files and added
--boot=yes to the network statement of eth0, but going through the consoles
of each of the systems to see if the installation completed successfully I
found a few that got stuck on the network interface configuration screen
(where it asks for IPv4 and IPv6 static/dynamic configuration information:
"Configure TCP/IP").





--
TIA
Paolo
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[CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[Scott Silva]

This discussion really should be on the classic computers mail list.

Hmmm 2Mhz 8080a vs 3.0Ghz Core 2 duo ... things have changed a bit on
the personal computer side.


But Windows for Workgroups 3.1 really screams on the newer hardware!  ;-P



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RE: [CentOS] Control IO related to a process

[Ross S. W. Walker]

Peter Kjellstrom wrote:
> On Tuesday 02 September 2008, Joseph L. Casale wrote:
> > Is there a way to nice the IO on a process such as dd?
> > If not, what could be a way to control the IO level of
> > such a process from bogging down a server to severely.
> 
> There is ionice (assuming CentOS-5) in the util-linux package. It's by no 
> means perfect but unlike nice it atleast tries to do what you want :-)

If that doesn't do it for you then maybe choosing a different
scheduler then cfq can help. Something like 'deadline' may
work better for the workload.

AFAIK ionice will only work with the cfq scheduler for now.

-Ross

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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[John R Pierce]

Ric Moore wrote:

I once had a pretty large collection of CP/M machines. I had three
IMSAI's


ok, now you've done it.

lets play "Name that old computer!"

http://hogranch.com/digital.research/My_office_upstairs_at_734_Lighthouse.jpg

(my office circa 1979)

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[CentOS] vtun -- no IPv6 support?

[Robert Moskowitz]

Reading many comments about vtun available through google searchs seems 
to imply it supports IPv6.


When I install it (v 3.0.2-1) and bind it to an interface that does NOT 
have IPv4 defined (only v6), start the service, and do a 'netstat 
-nat|grep 5000', I see it bound to 0.0.0.0:5000, not to the IPv6 0::/128 
equiv address.


What gives?  IPv6 support or not?

Meanwhile I found the kame vtun:  
http://orange.kame.net/dev/cvsweb.cgi/v6tun/?cvsroot=apps


And was given the following 'changes' to compile it on linux.  Do I need 
this???


v6tun: v6tun.o
   gcc v6tun.c v6tun.h -o v6tun

install: v6tun
   -rm -f $(install_dir)/v6tun
   install -c -o root -g wheel -m 04710 v6tun $(install_dir)

clean: 6tun: v6tun.o-rm -f *.o v6tun
   gcc v6tun.c v6tun.h -o v6tun install: v6tun
   -rm -f $(install_dir)/v6tun
   install -c -o root -g wheel -m 04710 v6tun $(install_dir) clean:
   -rm -f *.o v6tun



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RE: [CentOS] Control IO related to a process

[Joseph L. Casale]

>If that doesn't do it for you then maybe choosing a different
>scheduler then cfq can help. Something like 'deadline' may
>work better for the workload.
>
>AFAIK ionice will only work with the cfq scheduler for now.

Appreciate that info, I have just been reading about the difference but
cant say I understand in real life what the difference between deadline
versus cfq is. I will try changing it on the fly and running my tests.

Thanks!
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Re: [CentOS] Control IO related to a process

[MHR]

On Tue, Sep 2, 2008 at 9:51 AM, Joseph L. Casale
<[EMAIL PROTECTED]> wrote:
>
> Appreciate that info, I have just been reading about the difference but
> cant say I understand in real life what the difference between deadline
> versus cfq is. I will try changing it on the fly and running my tests.
>

The CFQ elevator algorithm attempts to be fair to all i/o requests,
without specific regard to performance.  The deadline elevator is more
aggressive in scheduling for minimal latency per device.

For example, if you have one process that is doing more or less random
i/o and another that is doing large block sequential i/o, the deadline
elevator will pander to the latter whereas the cfq elevator will try
to be fair in scheduling the i/os between the processes.

Here's a decent, short write up on them:
http://www.redhat.com/magazine/008jun05/features/schedulers/

HTH

mhr
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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[MHR]

On Tue, Sep 2, 2008 at 8:46 AM, Scott Silva <[EMAIL PROTECTED]> wrote:
>
> But Windows for Workgroups 3.1 really screams on the newer hardware!  ;-P
>

For shame!  WfW was 3.11, and it just screams, or did, or so I heard -
never used it.  I stuck with 3.1 until 98 was due out and then,
finally, caved and bought (!) a copy of 95.

In fact, my son is still using 98, but I think I've finally convinced
him to go to XP - I bought him some really neat flash drives that he
really likes but that do not work with 98 at all.  Heh, heh, heh,...

mhr
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Re: [CentOS] SAS/SATA DAS

[Peter Arremann]

Hi,

I assume you're talking about the MSA60? We have several of those installed 
and haven't seen any bottle necks there. Even the fastest SATA drives fall 
short of the 150MB/sec max SATA I throughput. And if you could push the 
1.5Gb/sec on the SATA side, then the SAS side with a 4x port (4x3Gb/sec) 
would become your bottleneck. 

Peter.


On Tuesday 02 September 2008 11:23:00 am Joseph L. Casale wrote:
> I need to replace a slow HP MSA20 that’s a bottleneck right now (We are an
> HP shop). HP’s only option with 3.5” SATA drives is stuck at SATA I behind
> a SAS controller. Dell makes an MD1000 that claims SATA II speeds behind a
> SAS Perc 5/E (Don’t know anything about dell). 
> Anyone got any real world info they can share? I need 3.5” SATA II at least
> 12 drives behind SAS, I am not concerned about space and could use multiple
> 1u chassis if I had to. 
> Thanks!


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RE: [CentOS] SAS/SATA DAS

[Joseph L. Casale]

>I assume you're talking about the MSA60?

Yup

>We have several of those installed
>and haven't seen any bottle necks there. Even the fastest SATA drives fall
>short of the 150MB/sec max SATA I throughput. And if you could push the
>1.5Gb/sec on the SATA side, then the SAS side with a 4x port (4x3Gb/sec)
>would become your bottleneck.

Good to know! I think I am actually going to get an MSA50 and go SAS.
The cheaper enclosure affords me the chance to get good drives and if
the need to expand comes I will just get another, it can be cascaded 1+1
and there are two ports on a P800 so I can hook up 4 of the things.

Thanks,
jlc
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Re: [CentOS] kickstart problems

[Richard Karhuse]

On 9/2/08, Paolo Supino <[EMAIL PROTECTED]> wrote:
>
>
> :
>
> Hi Joseph
>
>After sending the last reply I fixed the kickstart config files and
> added --boot=yes to the network statement of eth0, but going through the
> consoles of each of the systems to see if the installation completed
> successfully I found a few that got stuck on the network interface
> configuration screen (where it asks for IPv4 and IPv6 static/dynamic
> configuration information: "Configure TCP/IP").
>

 I've only been half reading this thread, so feel free to ignore this
"interruption" ...

Just plug one and only one NIC into the switch
Add "ksdevice=link" to your boot-up line (e.g. syslinux.cfg??).

Configure network (if you must) or just let DHCP take over.

Kickstart away 
(works for me on boxes where during anaconda installation the NICs are
labeled one way,
but CentOS running system does another).

Just a thought ...

   -rak-
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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[Anne Wilson]

On Tuesday 02 September 2008 18:25:10 MHR wrote:
> On Tue, Sep 2, 2008 at 8:46 AM, Scott Silva <[EMAIL PROTECTED]> wrote:
> > But Windows for Workgroups 3.1 really screams on the newer hardware!  ;-P
>
> For shame!  WfW was 3.11,

3.1.1,  IIRC

> and it just screams, or did, or so I heard - 
> never used it.  

I did.  It was better than 95, and better than 98 first edition.

> I stuck with 3.1 until 98 was due out and then, 
> finally, caved and bought (!) a copy of 95.
>
> In fact, my son is still using 98, but I think I've finally convinced
> him to go to XP - I bought him some really neat flash drives that he
> really likes but that do not work with 98 at all.  Heh, heh, heh,...
>
USB drives should work without any problem at all, assuming he is using 98SE.

They didn't work in 98 first edition, nor in NT4 or Win2000 - again, from 
memory, which could be faulty.

Anne


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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[MHR]

On Tue, Sep 2, 2008 at 10:50 AM, Anne Wilson <[EMAIL PROTECTED]> wrote:
>
> 3.1.1,  IIRC
>
Nope, 3.11.

> I did.  It was better than 95, and better than 98 first edition.
>
I was making a joke about WfW screaming.

> USB drives should work without any problem at all, assuming he is using 98SE.
>
No, the newer generation drives, mostly 1GB and up, explicitly do not
have drivers for 98SE at all.  In theory, one could tweak a
pre-existing driver to handle the extra memory, but in fact, a
Kingston 1GB drive will not work with 98SE.  That's the beauty of
Windows

> They didn't work in 98 first edition, nor in NT4 or Win2000 - again, from
> memory, which could be faulty.
>
 In Win2k, Micro$oft finally got up to speed and most flash drives
will work with it, but XP is better.

mhr
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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[John R Pierce]

For shame!  WfW was 3.11,



3.1.1,  IIRC
  


actually, there was a 3.10 and 3.11 release of Windows for Workgroups.   
The 3.11 release introduced the use of 32 bit protected mode 
implementation of the network stack and file system via extensive use of 
VxD drivers, and set the stage for Windows95 where almost the whole OS 
kernel ran in VxD space (prior versions used 16bit realmode IO 
components from MSDOS).

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Re: [CentOS] SAS/SATA DAS

[nate]

Joseph L. Casale wrote:

> Anyone got any real world info they can share? I need 3.5" SATA II at least
> 12 drives behind SAS,
> I am not concerned about space and could use multiple 1u chassis if I had
> to.

What about this?

http://h18000.www1.hp.com/products/quickspecs/13045_na/13045_na.html

The MSA2000sa is a 2U direct attach, external shared storage
solution designed for small to medium size deployments or
remote locations. It comes in two models - a basic single
controller model for low initial cost with the ability to
upgrade later; and a model with dual controllers standard
for maximum performance. This solution offers a SAS host
nterface to accommodate twelve 3.5 inch enterprise class
SAS drives and archival-class SATA drives. Additional
capacity can easily be added when needed by attaching up
to three MSA2000 12 bay drive enclosures. Maximum raw
capacity ranges from 3.6TB SAS or 12TB SATA in the base
cabinet, to over 14.4TB SAS or 48TB SATA with the addition
of the maximum number of drive enclosures.

This page says it supports SATA II
http://h18006.www1.hp.com/storage/disk_storage/msa_diskarrays/san_arrays/index.html

nate

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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[Anne Wilson]

On Tuesday 02 September 2008 19:10:32 MHR wrote:
> On Tue, Sep 2, 2008 at 10:50 AM, Anne Wilson <[EMAIL PROTECTED]> 
wrote:
> > 3.1.1,  IIRC
>
> Nope, 3.11.
>
You could be right.

> > I did.  It was better than 95, and better than 98 first edition.
>
> I was making a joke about WfW screaming.
>
> > USB drives should work without any problem at all, assuming he is using
> > 98SE.
>
> No, the newer generation drives, mostly 1GB and up, explicitly do not
> have drivers for 98SE at all.  In theory, one could tweak a
> pre-existing driver to handle the extra memory, but in fact, a
> Kingston 1GB drive will not work with 98SE.  That's the beauty of
> Windows
>
Can't argue with you :-)  It does seem likely, as 1GB flash drives wouldn't 
have been a possibility at that time.  I never owned one at all until 
relatively recently.

> > They didn't work in 98 first edition, nor in NT4 or Win2000 - again, from
> > memory, which could be faulty.
>
>  In Win2k, Micro$oft finally got up to speed and most flash drives
> will work with it, but XP is better.
>
Fair enough.  Out of curiosity - do they work in W2K out of the box, or 
require some update?  I ask because I'm considering W2K as a 
VM.

Anne



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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[MHR]

On Tue, Sep 2, 2008 at 11:55 AM, Anne Wilson <[EMAIL PROTECTED]> wrote:
>
> Fair enough.  Out of curiosity - do they work in W2K out of the box, or
> require some update?  I ask because I'm considering W2K as a
> VM.
>

Ya got me there - I /think/ so, but am not sure.

mhr
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Re: [CentOS] Control IO related to a process

[Martyn Hare]

On Tue, 2 Sep 2008 10:21:31 -0700
MHR <[EMAIL PROTECTED]> wrote:

> On Tue, Sep 2, 2008 at 9:51 AM, Joseph L. Casale
> <[EMAIL PROTECTED]> wrote:
> >
> > Appreciate that info, I have just been reading about the difference but
> > cant say I understand in real life what the difference between deadline
> > versus cfq is. I will try changing it on the fly and running my tests.
> >
> 
> The CFQ elevator algorithm attempts to be fair to all i/o requests,
> without specific regard to performance.  The deadline elevator is more
> aggressive in scheduling for minimal latency per device.
> 
> For example, if you have one process that is doing more or less random
> i/o and another that is doing large block sequential i/o, the deadline
> elevator will pander to the latter whereas the cfq elevator will try
> to be fair in scheduling the i/os between the processes.
> 
> Here's a decent, short write up on them:
> http://www.redhat.com/magazine/008jun05/features/schedulers/
> 
> HTH
> 
> mhr
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ionice?  has nobidy mentioned this?

-- 
Martyn Hare <[EMAIL PROTECTED]>


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[CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[Scott Silva]

Can't argue with you :-)  It does seem likely, as 1GB flash drives wouldn't 
have been a possibility at that time.  I never owned one at all until 
relatively recently.



I remember when 1 GB *hard* drives didn't exist!

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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[William L. Maltby]

On Tue, 2008-09-02 at 12:26 -0700, Scott Silva wrote:
> 
> 
> > Can't argue with you :-)  It does seem likely, as 1GB flash drives wouldn't 
> > have been a possibility at that time.  I never owned one at all until 
> > relatively recently.
> > 
> I remember when 1 GB *hard* drives didn't exist!

I swear, I'll never use a word like "curmudgeon" again! Sheesh!

Anyway, 5 and 10 MB HDs were the common PC drives back in the 80s and
90s. 20MB was a *big* one. Seek (average) of > 60ms was usual and fast
ones were less than that.

> 

-- 
Bill

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[CentOS] Re: Anti Virus and Anti Spam

[Scott Silva]

on 8-29-2008 7:55 PM horas simalango spake the following:

New be in linux!
Currently I have Install DNS, Email and Web server using centos 4.3.
All functions are running properly!
What anti virus and anti spam recomended for me to install to my
server? What I have to configure after installing anti virus and anti
spam?
Would some one help me please.! Now many spam mail come to user mailbox!

Thank's 'n Regards


Horasima

Look no further then here:
www.mailscanner.info

Very easy to set-up, and very powerful. When you get the feel of the software 
it is very easy to customize, and very efficient for spam and virus detection.


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RE: [CentOS] Control IO related to a process

[Joseph L. Casale]

>Here's a decent, short write up on them:
>http://www.redhat.com/magazine/008jun05/features/schedulers/

Yup,
I found that but I remember stumbling across this issue when reading about Xen
in Todd Deshane's book and finally found the article I came across.
http://www.linuxjournal.com/article/6931

Thanks,
jlc
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[CentOS] Re: CentOS 4.7 status

[Scott Silva]

on 8-30-2008 6:37 PM Adrian Sevcenco spake the following:

Hi,
i was wondering what is the status of 4.7
Thank you,
Best regards,
Adrian

4.7 was delayed so the buildservers could get 5.2 ready. 4.7 is probably in 
the queue now, but it takes a while because CentOS doesn't have a million 
dollar hardware budget, and has to schedule things to best use the hardware 
available.


When it is ready and synced to the mirrors, it will be announced.

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Re: [CentOS] CN=Nasreddine Kroun/OU=Benefits/O=Vitech is out of the office.

[Lanny Marcus]

On Tue, Sep 2, 2008 at 9:08 AM, Nasreddine Kroun <[EMAIL PROTECTED]> wrote:
> I will be out of the office starting  09/02/2008 and will not return until
> 09/04/2008.

Cool. Please do not put an auto responder on an email address where
you receive mailing lists.
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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[Lanny Marcus]

On Tue, Sep 2, 2008 at 11:32 AM, John R Pierce <[EMAIL PROTECTED]> wrote:
> Ric Moore wrote:
>> I once had a pretty large collection of CP/M machines. I had three
>> IMSAI's
> ok, now you've done it.
> lets play "Name that old computer!"
> http://hogranch.com/digital.research/My_office_upstairs_at_734_Lighthouse.jpg
> (my office circa 1979)

Circa  1979? Yesterday, I spoke with a man I worked with in 1978 -
1979. To my astonishment, the customer (DoD) is still using one of the
systems I worked on then. They are paying a company to upgrade the
Software, as they upgrade the Hardware. I am probably one of a few
people who can understand the original Assembly language code written
years ago for that.
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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[MHR]

On Tue, Sep 2, 2008 at 12:26 PM, Scott Silva <[EMAIL PROTECTED]> wrote:
>
> I remember when 1 GB *hard* drives didn't exist!
>

I still have a few - a 20MB Tulin TL225 that was HUGE when it first
came out, and a couple of Seagates, one is 120MB and one is 512MB.
Oh, and I almost forgot my Priam 780 FULL height 320MB drive, and I
think I may have a couple of Maxtor 140MB drives, too.  I also have a
pile of five or six 4-8GB hard drives.

I should be putting these up for auction on eBay in the not too
distant future - they all work, but they take up a fair amount of
space.  Feel free to look aorund and buy, if you like dinosaurs,
doorstops and other old stuff

;^)

mhr
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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[David Dyer-Bennet]

On Tue, September 2, 2008 14:31, William L. Maltby wrote:
>
> On Tue, 2008-09-02 at 12:26 -0700, Scott Silva wrote:
>> 
>>
>> > Can't argue with you :-)  It does seem likely, as 1GB flash drives
>> wouldn't
>> > have been a possibility at that time.  I never owned one at all until
>> > relatively recently.
>> >
>> I remember when 1 GB *hard* drives didn't exist!
>
> I swear, I'll never use a word like "curmudgeon" again! Sheesh!
>
> Anyway, 5 and 10 MB HDs were the common PC drives back in the 80s and
> 90s. 20MB was a *big* one. Seek (average) of > 60ms was usual and fast
> ones were less than that.

I got my first PC with a 20MB (Seagate ST-225) drive in 1985, they were
fairly affordable by then.  I don't think 5s were even still available in
normal retail channels (a friend, slightly earlier, took some time looking
for a 5 hoping to save some money over a 10MB that was so inconceivably
big, more than he needed, but couldn't find one for sale).  And that was a
half-height 5.25" 20MB drive.

(Today, I couldn't fit two RAW photos from my current DSLR onto that
drive.  And that camera can shoot 5 frames a second and has a 19-shot
internal buffer.  And cost less than half what that first PC cost.)

I'm sure it was in the 80s still when I was using 30MB RLL drives.

Around 1992 I got a 40MB 5.25" full height drive in a new 386-based PC,
and also my first laser printer.

By 1995 I had 3.5" 720MB drives in my PCs.  In the earlier 90s I had
purchased two 300MB drives, 5.25" half height (for $1500 each, sigh). 
Also by 1995 I had my first CD drive (not CD-R, though I went to a seminar
at 3M and saw one; an external SCSI device that sold for only $15,000).

So I think you are lumping together too large a span of time to claim disk
sizes were fairly stable over.




-- 
David Dyer-Bennet, [EMAIL PROTECTED]; http://dd-b.net/
Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/
Photos: http://dd-b.net/photography/gallery/
Dragaera: http://dragaera.info

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Re: [CentOS] SAS/SATA DAS

[Rudi Ahlers]

On Tue, Sep 2, 2008 at 8:44 PM, nate <[EMAIL PROTECTED]> wrote:

> Joseph L. Casale wrote:
>
> > Anyone got any real world info they can share? I need 3.5" SATA II at
> least
> > 12 drives behind SAS,
> > I am not concerned about space and could use multiple 1u chassis if I had
> > to.
>
> What about this?
>
> http://h18000.www1.hp.com/products/quickspecs/13045_na/13045_na.html
>
> The MSA2000sa is a 2U direct attach, external shared storage
> solution designed for small to medium size deployments or
> remote locations. It comes in two models - a basic single
> controller model for low initial cost with the ability to
> upgrade later; and a model with dual controllers standard
> for maximum performance. This solution offers a SAS host
> nterface to accommodate twelve 3.5 inch enterprise class
> SAS drives and archival-class SATA drives. Additional
> capacity can easily be added when needed by attaching up
> to three MSA2000 12 bay drive enclosures. Maximum raw
> capacity ranges from 3.6TB SAS or 12TB SATA in the base
> cabinet, to over 14.4TB SAS or 48TB SATA with the addition
> of the maximum number of drive enclosures.
>
> This page says it supports SATA II
>
> http://h18006.www1.hp.com/storage/disk_storage/msa_diskarrays/san_arrays/index.html
>
> nate
>
> ___
>

Sorry for hi-jacking this thread, but it's very interesting. What's the
difference, apart from the speed & price between SAS & SATAII?



-- 

Kind Regards
Rudi Ahlers
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RE: [CentOS] SAS/SATA DAS

[Joseph L. Casale]

>Sorry for hi-jacking this thread, but it's very interesting. What's the 
>difference, apart from the speed & price between SAS & SATAII?

SAS is more enterprise geared, relating to speed and MTBU (probably a load of 
crap on that point)
and SATA is cheaper and does not perform as well, supposedly less reliable to.

SAS usually only come in higher spindle speeds and the 2.5" variety actually 
only have 300 Gb ratings.

jlc
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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[Bill Campbell]

On Tue, Sep 02, 2008, William L. Maltby wrote:
>
>On Tue, 2008-09-02 at 12:26 -0700, Scott Silva wrote:
>> 
>> 
>> > Can't argue with you :-)  It does seem likely, as 1GB flash drives 
>> > wouldn't 
>> > have been a possibility at that time.  I never owned one at all until 
>> > relatively recently.
>> > 
>> I remember when 1 GB *hard* drives didn't exist!
>
>I swear, I'll never use a word like "curmudgeon" again! Sheesh!
>
>Anyway, 5 and 10 MB HDs were the common PC drives back in the 80s and
>90s. 20MB was a *big* one. Seek (average) of > 60ms was usual and fast
>ones were less than that.

The first HDs that Radio Shack sold for their Model 16s were 8in
8MB units and the primary HD which came with the disk controller
sold for about $4,500.00.  This was replaced with 5.25in 12MB
drives in January 1983 at the same price, about the same time
that the Model 16s were replaced by the Model 6000s (I learned
Xenix on these boxes).  If I remember correctly, Xenix came on 3
8in 1.2MB floppies plus another for the Development System which
had things like the ``vi'' editor and *roff text processing tools.

The Apple Lisa came with a 5MB drive, and also ran Xenix,
although I never could figure out where they would put any data.

The Kaypro-10 was a real bargain in 1984 or so, selling for
$2,500 including a hard drive, around 10MB if I remember.  It ran
only CP/M, but was a reasonable alternative to the IBM PC then.

Bill
-- 
INTERNET:   [EMAIL PROTECTED]  Bill Campbell; Celestial Software LLC
URL: http://www.celestial.com/  PO Box 820; 6641 E. Mercer Way
Voice:  (206) 236-1676  Mercer Island, WA 98040-0820
Fax:(206) 232-9186

People who relieve others of their money with guns are called robbers. It
does not alter the immorality of the act when the income transfer is
carried out by government.
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Re: [CentOS] SAS/SATA DAS

[John R Pierce]

> 
> >Sorry for hi-jacking this thread, but it's very interesting. What's the 
> >difference, apart from the speed & price between SAS & SATAII?
> 
> SAS is more enterprise geared, relating to speed and MTBU (probably a load of 
> crap on that point)
> and SATA is cheaper and does not perform as well, supposedly less reliable to.
> 
> SAS usually only come in higher spindle speeds and the 2.5" variety actually 
> only have 300 Gb ratings.


SAS supports proper multiplexor technology, and multichannel bonding... a 
typical external SAS connector has FOUR sas channels, and the multiplexor in a 
drive chassis can connect any drive to any channel at any time, while SATA only 
supports simple expanders (1 channel to N drives).  SAS understands NCQ 
natively, while this was a kludge added to SATA (and, from various field 
reports, not very well).


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Re: [CentOS] Re: CentOS 4.7 status

[Mag Gam]

where can we get ISOs? I can test for VirtualBox atleast. If there is
a problem I will submit a bug.



On Tue, Sep 2, 2008 at 3:45 PM, Scott Silva <[EMAIL PROTECTED]> wrote:
> on 8-30-2008 6:37 PM Adrian Sevcenco spake the following:
>>
>> Hi,
>> i was wondering what is the status of 4.7
>> Thank you,
>> Best regards,
>> Adrian
>>
> 4.7 was delayed so the buildservers could get 5.2 ready. 4.7 is probably in
> the queue now, but it takes a while because CentOS doesn't have a million
> dollar hardware budget, and has to schedule things to best use the hardware
> available.
>
> When it is ready and synced to the mirrors, it will be announced.
>
> --
> MailScanner is like deodorant...
> You hope everybody uses it, and
> you notice quickly if they don't
>
>
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>
>
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Re: [CentOS] Re: CentOS 4.7 status

[Matt]

> 4.7 was delayed so the buildservers could get 5.2 ready. 4.7 is probably in
> the queue now, but it takes a while because CentOS doesn't have a million
> dollar hardware budget, and has to schedule things to best use the hardware
> available.

What changes will be in CentOS 4.7 vs. 4.6?  I would really like to
see NCQ support on SATA drives.  Then again some have said it does not
help much.  I have an email server that is somewhat disk I/O bound.

Matt
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Re: [CentOS] SAS/SATA DAS

[Lanny Marcus]

On Tue, Sep 2, 2008 at 5:01 PM, Joseph L. Casale
<[EMAIL PROTECTED]> wrote:
>>Sorry for hi-jacking this thread, but it's very interesting. What's the 
>>difference, apart from the speed & price between SAS & SATAII?
>
> SAS is more enterprise geared, relating to speed and MTBU (probably a load of 
> crap on that point)
> and SATA is cheaper and does not perform as well, supposedly less reliable to.

There was a thread about the MTBF of various types of drives, linking
to articles about the experiences of Google.com,  here in this mailing
list, probably 1 or 2 years ago. As I recall, they found the MTBF
between different types of drives to be about the same?
>
> SAS usually only come in higher spindle speeds and the 2.5" variety actually 
> only have 300 Gb ratings.
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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[Les Mikesell]

Bill Campbell wrote:



Anyway, 5 and 10 MB HDs were the common PC drives back in the 80s and
90s. 20MB was a *big* one. Seek (average) of > 60ms was usual and fast
ones were less than that.


The first HDs that Radio Shack sold for their Model 16s were 8in
8MB units and the primary HD which came with the disk controller
sold for about $4,500.00.


Which makes an interesting contrast to the 8 GB micro-sd cards (about 
$45?) that a typical phone will take these days...



This was replaced with 5.25in 12MB
drives in January 1983 at the same price, about the same time
that the Model 16s were replaced by the Model 6000s (I learned
Xenix on these boxes).  If I remember correctly, Xenix came on 3
8in 1.2MB floppies plus another for the Development System which
had things like the ``vi'' editor and *roff text processing tools.


Once upon a time, these were the biggest installed base of any unix-like 
system.  I guess we had a lot of patience back then - and not much data.


--
  Les Mikesell
   [EMAIL PROTECTED]


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Re: [CentOS] Re: CentOS 4.7 status

[Ralph Angenendt]

Matt wrote:
> What changes will be in CentOS 4.7 vs. 4.6? 

http://wiki.centos.org/Manuals/ReleaseNotes/CentOS4.7

Cheers,

Ralph

pgpINMiAVvyBg.pgp
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RE: [CentOS] SAS/SATA DAS

[Joseph L. Casale]

>There was a thread about the MTBF of various types of drives, linking
>to articles about the experiences of Google.com,  here in this mailing
>list, probably 1 or 2 years ago. As I recall, they found the MTBF
>between different types of drives to be about the same?

That's exactly what I was referencing when I said the MTBF was probably BS.
Its been my experience as well, I have super cheap SATA drives running in a
very busy iSCSI array storing DVR data that's being written to at a fairly
high rate consistently and the thing just wont quit...

jlc
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Re: [CentOS] SAS/SATA DAS

[nate]

Rudi Ahlers wrote:

> Sorry for hi-jacking this thread, but it's very interesting. What's the
> difference, apart from the speed & price between SAS & SATAII?

On the most basic level I think of SAS as basically the new
SCSI, and SATA II as the new PATA.

SCSI = smaller, faster
SATA II = bigger, slower

SAS drives typically have higher quality control on them too. I
get the impression that a lot more firmware bugs get out on the
SATA drives vs the SAS/FC drives. Though the only time I've ever
had to upgrade the firmware on a disk drive was regular U320 SCSI
disks from Seagate sold via Dell.

nate

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Re: [CentOS] how can I get the kernel source codes of CentOS5.2

[Kevin Krieser]

On Aug 26, 2008, at 12:36 PM, Akemi Yagi wrote:


On Tue, Aug 26, 2008 at 10:32 AM, MHR <[EMAIL PROTECTED]> wrote:
On Tue, Aug 26, 2008 at 5:49 AM, Jim Perrin <[EMAIL PROTECTED]>  
wrote:


Rather than guessing, why not look at the output from the rpm  
command

he ran, which gives the name of the package he's missing? Filipe
nailed this one a little earlier in the thread with unifdef.x86_64
needing to be installed.


I remember running into this a while back.  That being the case,
shouldn't unifdef be included in kernel-devel, or at least one of the
packages that are required for building a kernel?  Seems like it
sticks out like a sore thumb this way

Alternatively, how do I go about suggesting this in a formal way
(bugzilla, etc.)?


Alan and I are now talking about this so we can amend the Wiki article
appropriately.  According to him, unifdef is not required on his
32-bit system.  I will update on this subject as soon as I gather more
info.


I've needed it on RHEL 5 systems before I could build the kernel  
source on 32 bit systems.  I probably did with CentOS too, but I don't  
recall for sure.

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Re: [CentOS] I need help with GRUB

[Al Sparks]

--- On Mon, 9/1/08, Sadaruwan Samaraweera <[EMAIL PROTECTED]> wrote:

> From: Sadaruwan Samaraweera <[EMAIL PROTECTED]>
> Subject: Re: [CentOS] I need help with GRUB
> To: "CentOS mailing list" 
> Date: Monday, September 1, 2008, 9:36 PM
> On Tue, Sep 2, 2008 at 4:14 AM, Al Sparks
> <[EMAIL PROTECTED]> wrote:
> 
> > --- On Mon, 9/1/08, Lanny Marcus
> <[EMAIL PROTECTED]> wrote:
> >
> > > From: Lanny Marcus
> <[EMAIL PROTECTED]>
> > > Subject: Re: [CentOS] I need help with GRUB
> > > To: "CentOS mailing list"
> 
> > > Date: Monday, September 1, 2008, 9:53 AM
> > > On Sun, Aug 31, 2008 at 11:31 PM, Sadaruwan
> Samaraweera
> > > <[EMAIL PROTECTED]> wrote:>
> > > > On Mon, Sep 1, 2008 at 9:55 AM, Ian Forde
> > > <[EMAIL PROTECTED]> wrote:
> > > >>
> > > >> On Mon, 2008-09-01 at 09:47 +0530,
> Sadaruwan
> > > Samaraweera wrote:
> > > >> > Hello,
> > > >>
> > > >> >And the problem that I'm
> having is
> > > with my two Linux distros. Ive
> > > >> > installed CentOS & Windows in
> my SATA HDD
> > > and I've used my complete
> > > >> > 40GB PATA HDD for Ubuntu. Well all
> OS's
> > > work fine with out any
> > > >> > problems but when I want to boot
> into CentOS
> > > I've to select the SATA
> > > >> > as my booting HDD from the BIOS if
> I want to
> > > go to Ubuntu the I've to
> > > >> > select my PATA as the default HDD
> from the
> > > menu. So what I want to do
> > > >> > is I need to add Both distros in to
> one GRUB
> > > boot loader and the other
> > > >> > thing is that both grubs that
> I've on
> > > both HDD s only detects the
> > > >> > windows Partition not the Linux
> partion. So I
> > > need to to know how to
> > > >> > add bothe Linux versions I've
> into one
> > > GRUB. I want to use the SATA
> > > >> > HDD as my default HDD.
> > > >>
> > > >> You'll want to merge the grub boot
> stanzas
> > > into one file, apply it to
> > > >> one (or both) of the drives, and keep it
> in sync
> > > when you do kernel
> > > >> updates (because those affect the grub
> menu)...
> > > This way, you won't have
> > > >> to change the BIOS setting.
> > > >>
> > >
> > > > OK, thx for the quick reply but I realy
> don't know
> > > how to do that can any
> > > > one help on that note.
> > >
> > >
> > > Possibly what you need to do is add another entry
> in your
> > > /etc/grub.conf file, on the HD you boot from. 
> Below is
> > > mine.
> > >
> > > [EMAIL PROTECTED] ~]$ sudo cat /etc/grub.conf
> > > Password:
> > > # grub.conf generated by anaconda
> > > #
> > > # Note that you do not have to rerun grub after
> making
> > > changes to this file
> > > # NOTICE:  You have a /boot partition.  This
> means that
> > > #  all kernel and initrd paths are
> relative to
> > > /boot/, eg.
> > > #  root (hd0,2)
> > > #  kernel /vmlinuz-version ro
> > > root=/dev/VolGroup00/LogVol00
> > > #  initrd /initrd-version.img
> > > #boot=/dev/hda
> > > default=0
> > > timeout=5
> > > splashimage=(hd0,2)/grub/splash.xpm.gz
> > > hiddenmenu
> > > title CentOS (2.6.18-92.1.10.el5)
> > > root (hd0,2)
> > > kernel /vmlinuz-2.6.18-92.1.10.el5 ro
> > > root=/dev/VolGroup00/LogVol00 rhgb quiet
> > > initrd /initrd-2.6.18-92.1.10.el5.img
> acpi=off
> > > title CentOS (2.6.18-92.1.6.el5)
> > > root (hd0,2)
> > > kernel /vmlinuz-2.6.18-92.1.6.el5 ro
> > > root=/dev/VolGroup00/LogVol00 rhgb quiet
> > > initrd /initrd-2.6.18-92.1.6.el5.img
> acpi=off
> > > title CentOS (2.6.18-92.1.1.el5)
> > > root (hd0,2)
> > > kernel /vmlinuz-2.6.18-92.1.1.el5 ro
> > > root=/dev/VolGroup00/LogVol00 rhgb quiet
> > > initrd /initrd-2.6.18-92.1.1.el5.img
> acpi=off
> > > title Windows XP
> > > rootnoverify (hd0,0)
> > > chainloader +1
> > > [EMAIL PROTECTED] ~]$
> > > ___
> > > CentOS mailing list
> > > CentOS@centos.org
> > > http://lists.centos.org/mailman/listinfo/centos
> >
> >
> > It's handy that someone posted their grub file.
> >
> > The answer to your question/situation might be
> complicated by the fact that
> > you use you have been changing your boot up disk in
> your BIOS.
> >
> > But the thing to look for in your grub.conf file is:
> >
> > > title CentOS (2.6.18-92.1.1.el5)
> > > root (hd0,2)
> > > kernel /vmlinuz-2.6.18-92.1.1.el5 ro
> >
> > Note that this example includes an entry for a hard
> drive:
> >
> > > root (hd0,2)
> >
> > That entry points to the "first" hard drive,
> third partition.  If you
> > have 2 hard drives, and you wanted to boot off the
> "second" drive
> > first partition, you might use:
> >root (hd1,0)
> >
> > You basically want to look at the grub configuration
> for each OS on
> > each hard drive you installed it on, and in
> consolidating them, "cut
> > and paste" entries from what you want to be your
> secondary drive to
> > your primary boot drive.
> >
> > Again, this is only using the above grub.conf as an
> example.  If you
> > have SCSI hard drives

Re: [CentOS] how can I get the kernel source codes of CentOS5.2

[Akemi Yagi]

On Tue, Sep 2, 2008 at 5:51 PM, Kevin Krieser <[EMAIL PROTECTED]> wrote:
>
> On Aug 26, 2008, at 12:36 PM, Akemi Yagi wrote:
>>
>> Alan and I are now talking about this so we can amend the Wiki article
>> appropriately.  According to him, unifdef is not required on his
>> 32-bit system.  I will update on this subject as soon as I gather more
>> info.
>
> I've needed it on RHEL 5 systems before I could build the kernel source on
> 32 bit systems.  I probably did with CentOS too, but I don't recall for
> sure.

I should have updated this thread earlier.  I have confirmed that
unifdef is required when building kernels for x86_64 but not for i686.

It's in the kernel .spec file:

# no need to build headers again for these arches,
# they can just use i386 and ppc64 headers
%ifarch i586 i686 ppc64iseries
%define with_headers 0
%endif

and this:

%if %{with_headers}
BuildRequires: unifdef
%endif

We have since updated the Wiki article accordingly.  Thank you all for
your participation.

Akemi
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Re: [CentOS] Re: Curmudgeoning (was Re: Problems with writing Dual Layer DVD)

[Paul]

On Tue, 2008-09-02 at 19:55 +0100, Anne Wilson wrote:
> On Tuesday 02 September 2008 19:10:32 MHR wrote:
> > On Tue, Sep 2, 2008 at 10:50 AM, Anne Wilson <[EMAIL PROTECTED]> 
> wrote:
> > > 3.1.1,  IIRC
> >
> > Nope, 3.11.
> >
> You could be right.

He is, we had a PC running it (WfW 3.11) till just this year on the shop
floor, I have the disks stored away just in case.  We also still use
POWERLan for shop floor system, thankfully the company released it as
freeware back in 1998 when they decided it was not worth their time to
certify it as Y2K compliant.  Shame they did not release the source
code ... I for one would be happy to have it.

Paul

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Re: [CentOS] Re: CentOS 4.7 status

[David Hrbáč]

Scott Silva napsal(a):
> 4.7 was delayed so the buildservers could get 5.2 ready. 4.7 is probably
> in the queue now, but it takes a while because CentOS doesn't have a
> million dollar hardware budget, and has to schedule things to best use
> the hardware available.
> 
> When it is ready and synced to the mirrors, it will be announced.

Glad to see some info and not only typical "when it's done it's done".
We are enterprise distro, so I guess we should inform the community on
progress. Especially in that case, when translators were warn a month
ago to prepare RN soon. Not mentioning that 4.x boxes are not receiving
updates/security fixes due to.
So thanks for the info Scott.
David Hrbáč
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Re: [CentOS] postfix mysql_pgsql update?

[<[EMAIL PROTECTED]>]

Duncan napsal(a):
> Another humble request here :)
> 
> thanks
> 

Any progress?
D.
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Re: [CentOS] Re: CentOS 4.7 status

[nate]

David Hrbáè wrote:

> Glad to see some info and not only typical "when it's done it's done".
> We are enterprise distro, so I guess we should inform the community on

We = RHEL?

Last I checked CentOS wasn't supported by most of the enterprise
things out there(though sometimes you can get lucky).

If someone is that eager to get the latest code they should be
using RHEL. As for me I probably won't bother with 4.7 until
early next year. I still have systems running RHEL 4 update 1
that I need to deal with..(stuff I inherited when I took a
new job earlier this year).

nate


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