Re: [CentOS] CentOS 7.2 laptop wireless Intel Corporation Centrino Wireless-N 2230 (rev c4)

[Andreas Benzler]

Hello Philip,

In my test cases on Centos 6 or 7 I always run an elrepo kernel or build my own 
one from rewritten spec file. That helps me out to get Centos work as good it 
can be.

Personal playground, those packages are unsigned!!!

http://centos.cms4all.org/centos/7/ 


noarch git firmware
kernel ml aufs - oh I was lazy


- Get Multimedia work, all my videos incl. DVD, midi and other audio files are 
working
  I was given up after test many repros.


libdrm 
radeon (no new iMac 2015…hmmm)
hardinfo


mutter - gnome 3 windows shadow hack
netatalk - apple time capsule on centos


Centos 7 live on usbdrive to test it on different machines….

Fun with Centos 7

PS:hm… gstreamer was working with centos 6 damm

 Don’t hammer my virtual server otherwise i push them away….





> Am 14.04.2016 um 08:47 schrieb Andreas Benzler :
> 
> this seems to be the right firmware
> 
> https://wireless.wiki.kernel.org/_media/en/users/drivers/iwlwifi-2030-ucode-18.168.6.1.tgz
>  
> 
> 
> 
> 
>> Am 14.04.2016 um 05:01 schrieb John R Pierce :
>> 
>> On 4/13/2016 7:42 PM, Philip V wrote:
>>> lspci gives
>>> 08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev 
>>> c4)
>>> 
>>> 1. How do I get this working?  I am happy to work with command line tools.
>>> 
>>> 2. Are there other packages I need? I installed wireless-tools, and
>>> tried to fiddle with iwconfig and NetworkManager to no avail. iwconfig
>>> does seem to interact with the wifi device.
>>> 
>>> 3. Is there documentation I should be following to
>>> understand/troubleshoot networking support?
>>> https://wiki.centos.org/HowTos/Laptops/Wireless  does not document the
>>> iwlwifi driver.
>> 
>> 
>> https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi
>> 
>> suggests you might need to get a firmware tarball for that card, and copy 
>> the appropriate iwlwifi-*.ucode file to /lib/firmware or something.
>> 
>> 
>> 
>> -- 
>> john r pierce, recycling bits in santa cruz
>> 
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Re: [CentOS] CentOS 7.2 laptop Intel Corporation Centrino Wireless-N 2230 (rev c4)

[Tony Molloy]

On Thursday 14 April 2016 03:42:50 Philip V wrote:
> With CentOS 7.2 a laptop wireless card is recognized in dmesg, but
> nonfunctional. Toggling the hardware wifi switch causes the
>  Bluetooth icon to appear and disappear. The network configuration
>  window shows the Wireless tab greyed out.  Rebooting with the
>  bluetooth enabled does not help. It appears the appropriate driver
>  is iwlwifi, which is what works in Fedora and appears to be
>  available and installed in CentOS.
> 
> lspci gives
> 08:00.0 Network controller: Intel Corporation Centrino Wireless-N
>  2230 (rev c4)
> 

I had similar problems installing 7.2 onto a couple of Dell E6xxx 
laptops with 
Intel Corporation Centrino Ultimate-N 5300/6300 cards. It lets me 
configure the network at install time but when I boot there is no wifi 
device.

Partial solution.

Laptop 1.  ( install when 7.1 was latest release )
installed 7.1no wifi
installed 7.0wifi works
upgraded to 7.1 several months agowifi works
upgraded to 7.2 when it was released   wifi works

Laptop 2   ( install when 7.2 was latest release )
 installed 7.2  no wifi
 installed  7.0 wifi works
 upgraded to 7.2 ( last weekend )   no wifi


Any ideas.

Regards
Tony

-- 
Linux nogs.tonyshome.ie 2.6.32-573.22.1.el6.x86_64 #1 SMP Wed Mar 23 
03:35:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
  
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Re: [CentOS] CentOS 7.2 laptop Intel Corporation Centrino Wireless-N 2230 (rev c4)

[Andreas Benzler]

take a view on:

kernel  and linux firmware 
sometimes firmware is excluded after upgrade to new revision.

Regards

Andy
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Re: [CentOS] CentOS 7.2 laptop Intel Corporation Centrino Wireless-N 2230 (rev c4)

[Andreas Benzler]

I found the the code firmware in

iwl2000-firmware package

> Am 14.04.2016 um 12:39 schrieb Tony Molloy :
> 
> On Thursday 14 April 2016 03:42:50 Philip V wrote:
>> With CentOS 7.2 a laptop wireless card is recognized in dmesg, but
>> nonfunctional. Toggling the hardware wifi switch causes the
>> Bluetooth icon to appear and disappear. The network configuration
>> window shows the Wireless tab greyed out.  Rebooting with the
>> bluetooth enabled does not help. It appears the appropriate driver
>> is iwlwifi, which is what works in Fedora and appears to be
>> available and installed in CentOS.
>> 
>> lspci gives
>> 08:00.0 Network controller: Intel Corporation Centrino Wireless-N
>> 2230 (rev c4)
>> 
> 
> I had similar problems installing 7.2 onto a couple of Dell E6xxx 
> laptops with 
> Intel Corporation Centrino Ultimate-N 5300/6300 cards. It lets me 
> configure the network at install time but when I boot there is no wifi 
> device.
> 
> Partial solution.
> 
> Laptop 1.  ( install when 7.1 was latest release )
>installed 7.1no wifi
>   installed 7.0wifi works
>upgraded to 7.1 several months agowifi works
>upgraded to 7.2 when it was released   wifi works
> 
> Laptop 2   ( install when 7.2 was latest release )
> installed 7.2  no wifi
> installed  7.0 wifi works
> upgraded to 7.2 ( last weekend )   no wifi
> 
> 
> Any ideas.
> 
> Regards
> Tony
> 
> -- 
> Linux nogs.tonyshome.ie 2.6.32-573.22.1.el6.x86_64 #1 SMP Wed Mar 23 
> 03:35:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
> 
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Re: [CentOS] mount bind problem

[Robert Nichols]

On 04/13/2016 08:44 PM, 望月忠雄 wrote:

# mount
/dev/mapper/VolGroup-lv_root on / type ext4 (rw,usrquota,grpquota)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw)
/dev/vda1 on /boot type ext4 (rw)
/dev/vdb on /mnt/extradiskA type ext4 (rw,usrquota,grpquota)
/mnt/extradiskA/home on /home type none (rw,bind)
/mnt/extradiskA/log on /var/log type none (rw,bind)
/mnt/extradiskA/mysql on /var/lib/mysql type none (rw,bind)
/mnt/extradiskA/.backup on /.backup type none (rw,bind)
/mnt/extradiskA/.daily_backup on /.daily_backup type none (rw,bind)
/mnt/extradiskA/backups on /var/backups type none (rw,bind)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
/dev/vdb on /home type ext4

  ^^^

(rw,relatime,barrier=1,data=ordered,usrquota,grpquota)


Well, there it is, the extra mount of /dev/vdb on /home.  It's
not apparent how it got that way.  Since it appears to be at
the bottom of /etc/mtab, it apparently happened _after_ all
the other mounts.  Some script must have done that.  If it's
not in /etc/rc.d/rc.local, then I'd do a progressively wider
search for references to /home, starting with

grep -r /home /etc

--
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Do NOT delete it.

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[CentOS] journaled quotas in CentOS6?

[Cal Sawyer]

Hi

CentOS 6.7 (kernel 2.6.32-573.el6.x86) ...

Wanted to set up group quotas on a new ext4 filesystem.  When i was 
initialising via quotacheck, received this message


> quotacheck -vcg /HOMES
quotacheck: Your kernel probably supports journaled quota but you 
are not using it.


I liked sound of that, so i brushed up on the procedure and modified the 
mount line in fstab to: defaults,noatime,grpjquota=aquota.group,jqfmt=vfsv0


on doing a mount /HOMES -o remount, i was met with this:

mount: /HOMES not mounted already, or bad option

and was unable to mount the filesystem until i removed the journaling 
options


I've come across how-tos and blogs by people who were doing this in 
CentOS6.5.  The mount manpage makes no mention of jquotas


Any thoughts on how to get jquotas in 6.7?

thanks

- cal
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Re: [CentOS] CentOS 7.2 laptop wireless Intel Corporation Centrino Wireless-N 2230 (rev c4)

[Philip V]

Thank you, I checked, and the firmware

/usr/lib/firmware/iwlwifi-2030-6.ucode

is already installed by default (timestamped 2012-Jan, it is not new).



On Wed, Apr 13, 2016 at 11:01 PM, John R Pierce  wrote:
> On 4/13/2016 7:42 PM, Philip V wrote:
>>
>> lspci gives
>> 08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230
>> (rev c4)
>>
>> 1. How do I get this working?  I am happy to work with command line tools.
>>
>> 2. Are there other packages I need? I installed wireless-tools, and
>> tried to fiddle with iwconfig and NetworkManager to no avail. iwconfig
>> does seem to interact with the wifi device.
>>
>> 3. Is there documentation I should be following to
>> understand/troubleshoot networking support?
>> https://wiki.centos.org/HowTos/Laptops/Wireless  does not document the
>> iwlwifi driver.
>
>
>
> https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi
>
> suggests you might need to get a firmware tarball for that card, and copy
> the appropriate iwlwifi-*.ucode file to /lib/firmware or something.
>
>
>
> --
> john r pierce, recycling bits in santa cruz
>
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Re: [CentOS] CentOS 7.2 laptop wireless Intel Corporation Centrino Wireless-N 2230 (rev c4)

[Philip V]

> Could you post the output of  dmesg | grep iwlwifi

Thanks Brandon and everyone -- to skip reboot I hope it is sufficient to execute
sudo grep iwlwifi  [CentOSpartition]/var/log/messages
(you can see several reboots and my attempts to experiment)

Apr 12 16:16:48 localhost kernel: iwlwifi :08:00.0: can't disable
ASPM; OS doesn't have ASPM control
Apr 12 16:16:48 localhost kernel: iwlwifi :08:00.0: loaded
firmware version 18.168.6.1 op_mode iwldvm
Apr 12 16:16:48 localhost kernel: iwlwifi :08:00.0:
CONFIG_IWLWIFI_DEBUG disabled
Apr 12 16:16:48 localhost kernel: iwlwifi :08:00.0:
CONFIG_IWLWIFI_DEBUGFS enabled
Apr 12 16:16:48 localhost kernel: iwlwifi :08:00.0:
CONFIG_IWLWIFI_DEVICE_TRACING disabled
Apr 12 16:16:48 localhost kernel: iwlwifi :08:00.0: Detected
Intel(R) Centrino(R) Wireless-N 2230 BGN, REV=0xC8
Apr 12 16:16:48 localhost kernel: iwlwifi :08:00.0: L1 Enabled -
LTR Disabled
Apr 12 16:16:48 localhost NetworkManager[1033]:   rfkill0: found
WiFi radio killswitch (at
/sys/devices/pci:00/:00:1c.1/:08:00.0/ieee80211/phy0/rfkill0)
(driver iwlwifi)
Apr 12 16:16:48 localhost NetworkManager[1033]:   (wlp8s0): new
Generic device (carrier: OFF, driver: 'iwlwifi', ifindex: 3)
Apr 12 16:22:02 localhost kernel: iwlwifi :08:00.0: RF_KILL bit
toggled to disable radio.
Apr 12 16:22:12 localhost kernel: iwlwifi :08:00.0: RF_KILL bit
toggled to enable radio.
Jun  1 07:03:35 localhost kernel: iwlwifi :08:00.0: can't disable
ASPM; OS doesn't have ASPM control
Jun  1 07:03:35 localhost kernel: iwlwifi :08:00.0: loaded
firmware version 18.168.6.1 op_mode iwldvm
Jun  1 07:03:35 localhost kernel: iwlwifi :08:00.0:
CONFIG_IWLWIFI_DEBUG disabled
Jun  1 07:03:35 localhost kernel: iwlwifi :08:00.0:
CONFIG_IWLWIFI_DEBUGFS enabled
Jun  1 07:03:35 localhost kernel: iwlwifi :08:00.0:
CONFIG_IWLWIFI_DEVICE_TRACING disabled
Jun  1 07:03:35 localhost kernel: iwlwifi :08:00.0: Detected
Intel(R) Centrino(R) Wireless-N 2230 BGN, REV=0xC8
Jun  1 07:03:35 localhost kernel: iwlwifi :08:00.0: L1 Enabled -
LTR Disabled
Jun  1 07:03:36 localhost NetworkManager[1031]:   rfkill0: found
WiFi radio killswitch (at
/sys/devices/pci:00/:00:1c.1/:08:00.0/ieee80211/phy0/rfkill0)
(driver iwlwifi)
Jun  1 07:03:36 localhost NetworkManager[1031]:   (wlp8s0): new
Generic device (carrier: OFF, driver: 'iwlwifi', ifindex: 3)
Apr 12 18:22:21 localhost kernel: iwlwifi :08:00.0: RF_KILL bit
toggled to disable radio.
Apr 12 18:22:25 localhost kernel: iwlwifi :08:00.0: RF_KILL bit
toggled to enable radio.
Apr 12 19:28:13 localhost NetworkManager[20019]:   rfkill0:
found WiFi radio killswitch (at
/sys/devices/pci:00/:00:1c.1/:08:00.0/ieee80211/phy0/rfkill0)
(driver iwlwifi)
Apr 12 19:28:13 localhost NetworkManager[20019]:   (wlp8s0): new
Generic device (carrier: OFF, driver: 'iwlwifi', ifindex: 3)
Apr 12 19:29:58 localhost kernel: iwlwifi :08:00.0: RF_KILL bit
toggled to disable radio.
Apr 12 19:30:06 localhost kernel: iwlwifi :08:00.0: RF_KILL bit
toggled to enable radio.
Apr 13 13:04:56 localhost kernel: iwlwifi :08:00.0: can't disable
ASPM; OS doesn't have ASPM control
Apr 13 13:04:56 localhost kernel: iwlwifi :08:00.0: loaded
firmware version 18.168.6.1 op_mode iwldvm
Apr 13 13:04:56 localhost kernel: iwlwifi :08:00.0:
CONFIG_IWLWIFI_DEBUG disabled
Apr 13 13:04:56 localhost kernel: iwlwifi :08:00.0:
CONFIG_IWLWIFI_DEBUGFS enabled
Apr 13 13:04:56 localhost kernel: iwlwifi :08:00.0:
CONFIG_IWLWIFI_DEVICE_TRACING disabled
Apr 13 13:04:56 localhost kernel: iwlwifi :08:00.0: Detected
Intel(R) Centrino(R) Wireless-N 2230 BGN, REV=0xC8
Apr 13 13:04:56 localhost kernel: iwlwifi :08:00.0: L1 Enabled -
LTR Disabled
Apr 13 13:04:56 localhost NetworkManager[1031]:   rfkill0: found
WiFi radio killswitch (at
/sys/devices/pci:00/:00:1c.1/:08:00.0/ieee80211/phy0/rfkill0)
(driver iwlwifi)
Apr 13 13:04:56 localhost NetworkManager[1031]:   (wlp8s0): new
Generic device (carrier: OFF, driver: 'iwlwifi', ifindex: 3)
Apr 13 13:05:50 localhost kernel: iwlwifi :08:00.0: RF_KILL bit
toggled to disable radio.
Apr 13 13:05:57 localhost kernel: iwlwifi :08:00.0: RF_KILL bit
toggled to enable radio.
Apr 13 13:06:36 localhost kernel: iwlwifi :08:00.0: can't disable
ASPM; OS doesn't have ASPM control
Apr 13 13:06:36 localhost kernel: iwlwifi :08:00.0: loaded
firmware version 18.168.6.1 op_mode iwldvm
Apr 13 13:06:36 localhost kernel: iwlwifi :08:00.0:
CONFIG_IWLWIFI_DEBUG disabled
Apr 13 13:06:36 localhost kernel: iwlwifi :08:00.0:
CONFIG_IWLWIFI_DEBUGFS enabled
Apr 13 13:06:36 localhost kernel: iwlwifi :08:00.0:
CONFIG_IWLWIFI_DEVICE_TRACING disabled
Apr 13 13:06:36 localhost kernel: iwlwifi :08:00.0: Detected
Intel(R) Centrino(R) Wireless-N 2230 BGN, REV=0xC8
Apr 13 13:06:36 localhost kernel: iwlwifi :08:00.0: L1 Enabled -
LTR Disabled
Apr 13 13:06:37 localhost NetworkManager[1028]:   rfkill0: 

Re: [CentOS] CentOS 7.2 laptop wireless Intel Corporation Centrino Wireless-N 2230 (rev c4)

[Philip V]

Hi John, Thank you, elrepo sounds good to know about --
http://elrepo.org/tiki/About says is an extra repository for hardware
support.
Still not clear how to troubleshoot the problem so I know what to
install from elrepo.

I know that a spec file is involved in creating an RPM file; do you
mean that you make your own kernel RPM?


On Thu, Apr 14, 2016 at 4:05 AM, Andreas Benzler  wrote:
> Hello Philip,
>
> In my test cases on Centos 6 or 7 I always run an elrepo kernel or build my 
> own one from rewritten spec file. That helps me out to get Centos work as 
> good it can be.
>
> Personal playground, those packages are unsigned!!!
>
> http://centos.cms4all.org/centos/7/ 
>
> 
> noarch git firmware
> kernel ml aufs - oh I was lazy
>
> 
> - Get Multimedia work, all my videos incl. DVD, midi and other audio files 
> are working
>   I was given up after test many repros.
>
> 
> libdrm
> radeon (no new iMac 2015…hmmm)
> hardinfo
>
> 
> mutter - gnome 3 windows shadow hack
> netatalk - apple time capsule on centos
>
>
> Centos 7 live on usbdrive to test it on different machines….
>
> Fun with Centos 7
>
> PS:hm… gstreamer was working with centos 6 damm
>
>  Don’t hammer my virtual server otherwise i push them away….
>
>
>
>
>
>> Am 14.04.2016 um 08:47 schrieb Andreas Benzler :
>>
>> this seems to be the right firmware
>>
>> https://wireless.wiki.kernel.org/_media/en/users/drivers/iwlwifi-2030-ucode-18.168.6.1.tgz
>>  
>> 
>>
>>
>>
>>> Am 14.04.2016 um 05:01 schrieb John R Pierce :
>>>
>>> On 4/13/2016 7:42 PM, Philip V wrote:
 lspci gives
 08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 
 (rev c4)

 1. How do I get this working?  I am happy to work with command line tools.

 2. Are there other packages I need? I installed wireless-tools, and
 tried to fiddle with iwconfig and NetworkManager to no avail. iwconfig
 does seem to interact with the wifi device.

 3. Is there documentation I should be following to
 understand/troubleshoot networking support?
 https://wiki.centos.org/HowTos/Laptops/Wireless  does not document the
 iwlwifi driver.
>>>
>>>
>>> https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi
>>>
>>> suggests you might need to get a firmware tarball for that card, and copy 
>>> the appropriate iwlwifi-*.ucode file to /lib/firmware or something.
>>>
>>>
>>>
>>> --
>>> john r pierce, recycling bits in santa cruz
>>>
>>> ___
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Re: [CentOS] CentOS 7.2 laptop wireless Intel Corporation Centrino Wireless-N 2230 (rev c4)

[Philip V]

Output of dmesg / messages is found in a previous email (buried in the
message thread)

https://lists.centos.org/pipermail/centos/2016-April/158703.html

Any advice?



On Wed, Apr 13, 2016 at 10:42 PM, Philip V  wrote:
> With CentOS 7.2 a laptop wireless card is recognized in dmesg, but
> nonfunctional. Toggling the hardware wifi switch causes the Bluetooth
> icon to appear and disappear. The network configuration window shows
> the Wireless tab greyed out.  Rebooting with the bluetooth enabled
> does not help. It appears the appropriate driver is iwlwifi, which is
> what works in Fedora and appears to be available and installed in
> CentOS.
>
> lspci gives
> 08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 (rev 
> c4)
>
> 1. How do I get this working?  I am happy to work with command line tools.
>
> 2. Are there other packages I need? I installed wireless-tools, and
> tried to fiddle with iwconfig and NetworkManager to no avail. iwconfig
> does seem to interact with the wifi device.
>
> 3. Is there documentation I should be following to
> understand/troubleshoot networking support?
> https://wiki.centos.org/HowTos/Laptops/Wireless does not document the
> iwlwifi driver.
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[CentOS] Freeradius, openldap and TLS

[Andrew Daviel]

We have a freeradius server using LDAP authentication against openldap.

We have had freeradius-3.0.4-6 on CentOS 7 successfully communicating 
with openldap-servers-2.3.43 on CentOS 5.


We need some features in freeradius-3.0.12. When I build that on CentOS 
6, it initially works, but then develops TLS errors.


We can search and authenticate against the LDAP server with Apache, and 
with ldapsearch using ldaps:// URLs and with start_tls.


If I ask the freeradius community, I am told unequivocally to use 
OpenSSL not NSS. (currently, radiusd is finding the server CA 
certificate in /etc/raddb/certs/cert8.db but the client certificate in a 
PEM file after looking in cert8.db first)


Is this possible with the standard CentOS builds, and if so, is there a 
tutorial or examples anywhere ?


If not, has anyone solved this problem ?

--
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Re: [CentOS] CentOS 7.2 laptop wireless Intel Corporation Centrino Wireless-N 2230 (rev c4)

[Brandon Vincent]

On Thu, Apr 14, 2016 at 2:26 PM, Philip V  wrote:
> Any advice?

Output of rfkill list?

Brandon Vincent
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Re: [CentOS] mount bind problem

[望月忠雄]

Dear Robert,

Before sending 'grep -r /home /etc' data, I want tell you what happned this
morning.

In order to solve the /home/home problem, 'umount /home' had been done,
system had been running in a normal file system.
But suddenly /home has been lost.


Key information of that time is as in the  lines.
And I found in the  lines messages log.
How do you think the reason of trouble.


# ls -l /home
total 0
# ls -l /
total 3614
-rw---1 root root   12288 Apr 15 05:00 aquota.group
-rw---1 root root   10240 Apr 15 05:00 aquota.user
dr-xr-xr-x.   2 root root4096 Nov 15 18:35 bin
dr-xr-xr-x.   5 root root5120 Nov 15 18:36 boot
drwxr-xr-x2 root root4096 Jul 24  2015 cgroup
drwxr-xr-x   17 root root3820 Apr 14 10:24 dev
drwxr-xr-x.  75 root root4096 Apr 14 10:31 etc
drwxr-xr-x2 root root4096 Nov 15 19:04 home
dr-xr-xr-x.   8 root root4096 Aug  8  2015 lib
dr-xr-xr-x.   8 root root   12288 Nov 15 18:35 lib64


# ls -l /mnt/extradiskA
total 48
-rw--- 1 root  root   7168 Apr 15 02:14 aquota.group
-rw--- 1 root  root   7168 Apr 14 10:22 aquota.user
drwxr-x--- 2 root  root   4096 Jan 18 21:55 backups
drwxr-xr-x 4 root  root   4096 Jan  1 11:59 home
drwxr-xr-x 8 root  root   4096 Apr 15 01:10 log
drwx-- 2 root  root  16384 Nov 15 18:58 lost+found
drwxr-xr-x 6 mysql mysql  4096 Apr 14 10:24 mysql
# ls -l /mnt/extradiskA/home
total 8
drwxr-xr-x. 7 admin   admin   4096 Sep 21  2015 admin
drwxr-xr-x  4 kavfile kavfile 4096 Jan  1 12:00 kavfile
# mount
/dev/mapper/VolGroup-lv_root on / type ext4 (rw,usrquota,grpquota)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw)
/dev/vda1 on /boot type ext4 (rw)
/dev/vdb on /mnt/extradiskA type ext4 (rw,usrquota,grpquota)
/mnt/extradiskA/home on /home type none (rw,bind)
/mnt/extradiskA/log on /var/log type none (rw,bind)
/mnt/extradiskA/mysql on /var/lib/mysql type none (rw,bind)
/mnt/extradiskA/.backup on /.backup type none (rw,bind)
/mnt/extradiskA/.daily_backup on /.daily_backup type none (rw,bind)
/mnt/extradiskA/backups on /var/backups type none (rw,bind)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
/ on /tmp/tmproot type none (rw,bind)
# df
Filesystem   1K-blocksUsed Available Use% Mounted on
/dev/mapper/VolGroup-lv_root
  12778200 3149592   8972840  26% /
tmpfs   961176   0961176   0% /dev/shm
/dev/vda1   487652  205564256488  45% /boot
/dev/vdb  41153856  542076  38514628   2% /mnt/extradiskA

# cat /etc/fstab

#
# /etc/fstab
# Created by anaconda on Mon Jul 28 08:21:01 2014
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/VolGroup-lv_root /   ext4
 defaults,usrquota,grpquota1 1
UUID=9a855356-ee00-4ae7-a185-226566ce1dba /boot   ext4
 defaults1 2
UUID=093c9b95-8336-4682-9927-132dbdf2f082 /mnt/extradiskA ext4
 defaults,usrquota,grpquota  1 2
/dev/mapper/VolGroup-lv_swap swapswapdefaults
 0 0
tmpfs   /dev/shmtmpfs   defaults0 0
devpts  /dev/ptsdevpts  gid=5,mode=620  0 0
sysfs   /syssysfs   defaults0 0
proc/proc   procdefaults0 0
/mnt/extradiskA/home/home   nonebind0 0
/mnt/extradiskA/log /var/lognonebind0 0
/mnt/extradiskA/mysql/var/lib/mysql nonebind0 0
/mnt/extradiskA/.backup /.backupnonebind0 0
/mnt/extradiskA/.daily_backup  /.daily_backup   nonebind0 0
/mnt/extradiskA/backups  /var/backups   nonebind0 0





Apr 15 00:00:03 teisui2 kernel: [ cut here ]
Apr 15 00:00:03 teisui2 kernel: WARNING: at fs/ext4/inode.c:3945
ext4_flush_unwritten_io+0x74/0x80 [ext4]() (Not tainted)
Apr 15 00:00:03 teisui2 kernel: Hardware name: KVM
Apr 15 00:00:03 teisui2 kernel: Modules linked in: dazukofs(U) ipv6
xt_multiport iptable_filter ip_tables joydev sg virtio_balloon serio_raw
virtio_net i2c_piix4 i2
c_core ext4 jbd2 mbcache virtio_blk sr_mod cdrom virtio_pci virtio_ring
virtio pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log
dm_mod [last unloaded:
 scsi_wait_scan]
Apr 15 00:00:03 teisui2 kernel: Pid: 1707, comm: spamd Not tainted
2.6.32-573.1.1.el6.x86_64 #1
Apr 15 00:00:03 teisui2 kernel: Call Trace:
Apr 15 00:00:03 teisui2 kernel: [] ?
warn_slowpath_common+0x91/0xe0
Apr 15 00:00:03 teisui2 kernel: [] ?
warn_slowpath_null+0x1a/0x20
Apr 15 00:00:03 teisui2 kernel: [] ?
ext4_flush_unwritten_io+0x74/0x80 [ext4]

Re: [CentOS] CentOS 7.2 laptop wireless Intel Corporation Centrino Wireless-N 2230 (rev c4)

[Andreas Benzler]

Good morning Philip,

- To install a most vanilla kernel elrepo is a quick step look forward about 
kernel solution
- Yes build own kernel by a special kernel specification for your machine. Why 
not?
- Frozen a kernel in fact „it works“ with the right firmware for your wifi is a 
good solution.

I got a mixed network with Windows 3.11 up to Windows 10 and Linux with 
OpenSuse, Ubuntu
and a HPC Centos 7 Cluster on Opteron 6380.

By the way, when you get a preinstalled System on a laptop it works in most 
cases from prebuilder.

It’s a common thing to use the given driver. To upgrade it all the time by 
update can hold you back
todo you real work.

As hardware, network and software specialist i try out different compositions. 
My private iMac 2010 not
run really on the 2.6 - Centos 6 or 3.10 kernel form Centos 7. Same effect on 
newer hardware from „today“.

To build the right kernel for specific hardware is for me a common thing. 
Freeze it when i got - also.

We froze the HPC cluster at 7.1.503, because it works for us. To update or 
upgrade can not be done all the time,
 our calculations run from hours to month….

Some of you say Centos 7.0 works why not download this kernel from 
vault.centos.org  and install with yum install 
kernel…rpm?

Sincerely

Andy
> Am 14.04.2016 um 23:16 schrieb Philip V :
> 
> Hi John, Thank you, elrepo sounds good to know about --
> http://elrepo.org/tiki/About  says is an extra 
> repository for hardware
> support.
> Still not clear how to troubleshoot the problem so I know what to
> install from elrepo.
> 
> I know that a spec file is involved in creating an RPM file; do you
> mean that you make your own kernel RPM?
> 
> 
> On Thu, Apr 14, 2016 at 4:05 AM, Andreas Benzler  > wrote:
>> Hello Philip,
>> 
>> In my test cases on Centos 6 or 7 I always run an elrepo kernel or build my 
>> own one from rewritten spec file. That helps me out to get Centos work as 
>> good it can be.
>> 
>> Personal playground, those packages are unsigned!!!
>> 
>> http://centos.cms4all.org/centos/7/  
>> >
>> 
>> 
>> noarch git firmware
>> kernel ml aufs - oh I was lazy
>> 
>> 
>> - Get Multimedia work, all my videos incl. DVD, midi and other audio files 
>> are working
>>  I was given up after test many repros.
>> 
>> 
>> libdrm
>> radeon (no new iMac 2015…hmmm)
>> hardinfo
>> 
>> 
>> mutter - gnome 3 windows shadow hack
>> netatalk - apple time capsule on centos
>> 
>> 
>> Centos 7 live on usbdrive to test it on different machines….
>> 
>> Fun with Centos 7
>> 
>> PS:hm… gstreamer was working with centos 6 damm
>> 
>> Don’t hammer my virtual server otherwise i push them away….
>> 
>> 
>> 
>> 
>> 
>>> Am 14.04.2016 um 08:47 schrieb Andreas Benzler :
>>> 
>>> this seems to be the right firmware
>>> 
>>> https://wireless.wiki.kernel.org/_media/en/users/drivers/iwlwifi-2030-ucode-18.168.6.1.tgz
>>>  
>>> 
>>> 
>>> 
>>> 
 Am 14.04.2016 um 05:01 schrieb John R Pierce :
 
 On 4/13/2016 7:42 PM, Philip V wrote:
> lspci gives
> 08:00.0 Network controller: Intel Corporation Centrino Wireless-N 2230 
> (rev c4)
> 
> 1. How do I get this working?  I am happy to work with command line tools.
> 
> 2. Are there other packages I need? I installed wireless-tools, and
> tried to fiddle with iwconfig and NetworkManager to no avail. iwconfig
> does seem to interact with the wifi device.
> 
> 3. Is there documentation I should be following to
> understand/troubleshoot networking support?
> https://wiki.centos.org/HowTos/Laptops/Wireless  does not document the
> iwlwifi driver.
 
 
 https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi
 
 suggests you might need to get a firmware tarball for that card, and copy 
 the appropriate iwlwifi-*.ucode file to /lib/firmware or something.
 
 
 
 --
 john r pierce, recycling bits in santa cruz
 
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