Re: [CentOS] Rozważania odnośnie storage?

2012-01-14 Thread Rafał Radecki
Sorry, mail was mentioned for polish centos list. Best regards, Rafał. W dniu 13 stycznia 2012 21:55 użytkownik fakessh napisał: > use the tool googletranslate > is well for that > > > cheers > > Le 2012-01-13 20:43, Diego Sanchez a écrit : >> Rafał Radecki : >> Please, write in english >> >> 2

Re: [CentOS] Rozważania odnośnie storage?

2012-01-14 Thread Karanbir Singh
On 01/14/2012 09:41 AM, Rafał Radecki wrote: > Sorry, mail was mentioned for polish centos list. > We dont actually have a polish list, but if there is interest: we should create one here : http://lists.centos.org/mailman/listinfo/ all that is needed are a couple of people, presently visible in t

[CentOS] Storage - posibilities?

2012-01-14 Thread Rafał Radecki
Hi all. Currently I am administering a mail cluster in which messages are stored on software RAID shared with NFS. There are several NFS servers, every one of them exports a part of all mail files for a specific frontend with postfix. We are thinking about replacing these storage hosts with one s

Re: [CentOS] Storage - posibilities?

2012-01-14 Thread John R Pierce
On 01/14/12 1:56 AM, Rafał Radecki wrote: > We are thinking about replacing these storage hosts with one solution, > maybe a storage array with appropriate disk space and I/O capacity. > What are pros and cons of that solution? Do storage arrays have > appropriate I/O capacity (X*software RAID)? Do

Re: [CentOS] Storage - posibilities?

2012-01-14 Thread Nicolas Thierry-Mieg
John R Pierce wrote: > On 01/14/12 1:56 AM, Rafał Radecki wrote: >> We are thinking about replacing these storage hosts with one solution, >> maybe a storage array with appropriate disk space and I/O capacity. >> What are pros and cons of that solution? Do storage arrays have >> appropriate I/O cap

[CentOS] iptable rule for bypassing netfilter queue for a matching address.‏

2012-01-14 Thread Arif Tuhin
I have two iptable rules for userspace modification : iptable -t mangle -A PREROUTING -p udp --dport 9090 -j NFQUEUE iptable -t mangle -A OUTPUT -p udp --sport 9090 -j NFQUEUE I have the following network setup: client >Linux Box or router->server. What i

Re: [CentOS] Is avahi essential?

2012-01-14 Thread Timothy Murphy
Gordon Messmer wrote: >> Wait a sec, I have that setup (just mediatomb instead of ps3mediaserver) >> and there's no avahi on my network. Yet the PS3 is perfectly capable of >> discovering and using the DLNA server. > > Avahi allows the workstation running it to advertise and solicit mDNS > inform

Re: [CentOS] Is avahi essential?

2012-01-14 Thread Timothy Murphy
Gordon Messmer wrote: > On 01/11/2012 03:42 AM, Timothy Murphy wrote: >> As far as I can see, it is some sort of rival to dhcpd. > > No, DHCP is used to assign network addresses and routes (and other > optional configuration items). According to the Wikipedia entry for mDNS, "Using mDNS allows t

Re: [CentOS] Is avahi essential?

2012-01-14 Thread Stephen Harris
On Sat, Jan 14, 2012 at 12:29:05PM +, Timothy Murphy wrote: > Gordon Messmer wrote: > > > On 01/11/2012 03:42 AM, Timothy Murphy wrote: > >> As far as I can see, it is some sort of rival to dhcpd. > > > > No, DHCP is used to assign network addresses and routes (and other > > optional configur

Re: [CentOS] skype on 5.7

2012-01-14 Thread Ljubomir Ljubojevic
On 01/14/2012 12:35 AM, Lars Hecking wrote: > Yves Bellefeuille writes: >> On Friday 13 January 2012, ken wrote: >> >>> This was with skype_static-2.2.0.35, the one recommended for CentOS >>> version 5.x in the HOW-TO. So the how-to is either wrong or it's >>> missing some information. >> >> The

Re: [CentOS] Is avahi essential?

2012-01-14 Thread Timothy Murphy
Stephen Harris wrote: >> >> As far as I can see, it is some sort of rival to dhcpd. >> > >> > No, DHCP is used to assign network addresses and routes (and other >> > optional configuration items). >> >> According to the Wikipedia entry for mDNS, >> "Using mDNS allows to determine the IP address

Re: [CentOS] Is avahi essential?

2012-01-14 Thread Mikael Fridh
On Jan 14, 2012 3:18 PM, "Timothy Murphy" wrote: > > Stephen Harris wrote: > > >> >> As far as I can see, it is some sort of rival to dhcpd. > >> > > >> > No, DHCP is used to assign network addresses and routes (and other > >> > optional configuration items). > >> > >> According to the Wikipedia e

Re: [CentOS] Is avahi essential?

2012-01-14 Thread Stephen Harris
On Sat, Jan 14, 2012 at 02:17:56PM +, Timothy Murphy wrote: > OK, I should have said "a rival to ARP + dhcp". But it's not; ARP+dhcp is all about mapping MAC<->IP. mDNS is dealing with name<->IP. mDNS competes with _DNS_; it's a way of doing local DNS without needing a DNS server. > As I se

Re: [CentOS] Is avahi essential?

2012-01-14 Thread Marc Deop
>ARP: In a traditional ethernet network, when you try to connect to a >machine on your local network with the number 10.20.30.40 then your >machine will send out an ARP broadcast packet "whois 10.20.30.40" and >then the machine in question will respond with its MAC address and then >the machines ca

Re: [CentOS] Is avahi essential?

2012-01-14 Thread Les Mikesell
On Sat, Jan 14, 2012 at 8:17 AM, Timothy Murphy wrote: > >>> Isn't that more or less what I said above? >> >> It's almost the opposite.  mDNS does name->IP and let's people >> find other machines; DHCP does MAC->IP and let's a machine find _itself_. >> >> Or, another way of looking at it.  mDNS is

Re: [CentOS] Is avahi essential?

2012-01-14 Thread Les Mikesell
On Sat, Jan 14, 2012 at 8:57 AM, Marc Deop wrote: >>ARP: In a traditional ethernet network, when you try to connect to a >>machine on your local network with the number 10.20.30.40 then your >>machine will send out an ARP broadcast packet "whois 10.20.30.40" and >>then the machine in question will

Re: [CentOS] skype on 5.7

2012-01-14 Thread ken
On 01/13/2012 05:59 PM Yves Bellefeuille wrote: > On Friday 13 January 2012, ken wrote: > >> This was with skype_static-2.2.0.35, the one recommended for CentOS >> version 5.x in the HOW-TO. So the how-to is either wrong or it's >> missing some information. > > The How-To recommends skype_stati

Re: [CentOS] Storage - posibilities?

2012-01-14 Thread Devin Reade
Rafa³ Radecki wrote: > We are thinking about replacing these storage hosts with one solution, > maybe a storage array with appropriate disk space and I/O capacity. As John had mentioned the solution really depends on a complete analysis of your requirements (average and maximum message size, nu

Re: [CentOS] skype on 5.7

2012-01-14 Thread Yves Bellefeuille
On Saturday 14 January 2012, ken wrote: > Thanks. You're correct. And it runs... sort of. It loads, but > won't connect. There's some kind of networking problem. I'm trying > to figure out how to isolate the problem, i.e., where on my network > the connection is failing. I've found that Sky

Re: [CentOS] skype on 5.7

2012-01-14 Thread Yves Bellefeuille
On Saturday 14 January 2012, Ljubomir Ljubojevic wrote: > My own rpm, static in rpm, with avatars added: > http://rpms.plnet.rs/plnet-centos5-i386/RPMS.plnet/skype-2.1.0.81-1.e > l5.noarch.rpm Is this the kind of package that's appropriate for the CentOS contrib repository? -- Yves Bellefeui

Re: [CentOS] skype on 5.7

2012-01-14 Thread Ljubomir Ljubojevic
On 01/14/2012 08:08 PM, Yves Bellefeuille wrote: > On Saturday 14 January 2012, Ljubomir Ljubojevic > wrote: > >> My own rpm, static in rpm, with avatars added: >> http://rpms.plnet.rs/plnet-centos5-i386/RPMS.plnet/skype-2.1.0.81-1.e >> l5.noarch.rpm > > Is this the kind of package that's appropria

Re: [CentOS] LSI/3ware 9750-4i and multipath I/O

2012-01-14 Thread Vahan Yerkanian
Thanks for the comments folks, your points are damn right. I believe what I experienced was the data corruption via stale caches.. So much for not opening up the case (actually for the first time, I resisted due to the lack of time) and not checking if these controllers are somehow linked toge

Re: [CentOS] [SOLVED] blue screen instead of login screen

2012-01-14 Thread Frank Cox
On Fri, 13 Jan 2012 17:01:16 -0600 Frank Cox wrote: > I haven't actually tried to place an icon on there. I do know that I can > place an application window anywhere on the desktop with no problem (that I've > noticed so far). I'll try putting an icon there when I'm next at that office > and see

Re: [CentOS] LSI/3ware 9750-4i and multipath I/O

2012-01-14 Thread John R Pierce
On 01/14/12 2:32 PM, Vahan Yerkanian wrote: > Thanks for the comments folks, your points are damn right. I believe what I > experienced was the data corruption via stale caches.. > > So much for not opening up the case (actually for the first time, I resisted > due to the lack of time) and not ch

Re: [CentOS] LSI/3ware 9750-4i and multipath I/O

2012-01-14 Thread John R Pierce
On 01/14/12 2:32 PM, Vahan Yerkanian wrote: > Going back to the LSI website to check if these 9750 have an option to link > their caches into one... I was curious, *all* the LSI sAS RAID cards say 'single controller multipathing', both the megaraid cards and the 3ware cards (I'm setting up a se

Re: [CentOS] LSI/3ware 9750-4i and multipath I/O

2012-01-14 Thread Vahan Yerkanian
On Jan 15, 2012, at 2:52 AM, John R Pierce wrote: > > who built/configured this system? > > Someone you don't know. ;) A local distributor. The system was shipped with MS OS with MPIO ISCSI targets installed claiming to be tested. Of course I had to remove that offending OS and install Cent

Re: [CentOS] LSI/3ware 9750-4i and multipath I/O

2012-01-14 Thread Vahan Yerkanian
On Jan 15, 2012, at 3:52 AM, John R Pierce wrote: > On 01/14/12 2:32 PM, Vahan Yerkanian wrote: >> Going back to the LSI website to check if these 9750 have an option to link >> their caches into one... > > I was curious, *all* the LSI sAS RAID cards say 'single controller > multipathing', both

Re: [CentOS] LSI/3ware 9750-4i and multipath I/O

2012-01-14 Thread John R Pierce
On 01/14/12 3:55 PM, Vahan Yerkanian wrote: > At the moment I have two 9750-4i installed, each having a sff8087 x4 cable > going to the same backplane containing dual-port sas disks. > > This was supposed to be a load balanced, multi-controller failover setup. AFAIK the only way to achieve that i

Re: [CentOS] Storage - posibilities?

2012-01-14 Thread Lisandro Grullon
I hope you will be clustering those storage arrays since email is such a vital service for any organization. What are your current choices? I don't think there would be any major issues as long as you plan you current and long term capacity needs. Let us know what are your plans at the moment.

Re: [CentOS] Is avahi essential?

2012-01-14 Thread Gordon Messmer
On 01/14/2012 04:19 AM, Timothy Murphy wrote: > If running mediatomb avoids the necessity for Avahi, > can you give a concrete example of a situation where Avahi_is_ needed? I did. "If two PCs were running a collaborative editor, like gobby, they'll use mDNS to find each other. Chat clients suc