Yuval,

   Probably Your problem this with version kernel, this version not
compatible with some VDSM version, i recommend alter this is version kernel
of hosts and reboot. If do not know alter, follow the steps below:

    Verifie yours vmlinuz's images:

   [root@firehome boot]# ls -l /boot/vmlinuz-3.*
-rwxr-xr-x. 1 root root 4662160 Mai  7  2012
/boot/vmlinuz-3.3.4-5.fc17.x86_64
-rwxr-xr-x  1 root root 4839872 Dez 11 16:11
/boot/vmlinuz-3.6.10-2.fc17.x86_64
-rwxr-xr-x  1 root root 4839776 Dez  4 11:30
/boot/vmlinuz-3.6.9-2.fc17.x86_64

   Alter your configuration in container "menuentry..." for kernel version
3.3.4*, example:

   [root@firehome ~]# vim /boot/grub2/grub.cfg

   ### BEGIN /etc/grub.d/10_linux ###
   menuentry 'Fedora Linux' --class fedora --class gnu-linux --class gnu
--class os $menuentry_id_option
'gnulinux-simple-f23745bb-fd60-43b7-ac0f-6600ba582ad7' {
        load_video
        set gfxpayload=keep
        insmod gzio
        insmod part_msdos
        insmod ext2
        set root='hd0,msdos1'
        if [ x$feature_platform_search_hint = xy ]; then
          search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1
--hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd0,msdos1'
 508a2fe6-6263-4521-bf7d-83363b71edfd
        else
          search --no-floppy --fs-uuid --set=root
508a2fe6-6263-4521-bf7d-83363b71edfd
        fi
        echo    'Loading Linux 3.3.4-5.fc17.x86_64 ...'
        linux   /vmlinuz-3.3.4-5.fc17.x86_64
root=/dev/mapper/vg_ovirt00-lv_root ro rd.lvm.lv=vg_ovirt00/lv_root rd.md=0
rd.dm=0 SYSFONT=True  KEYTABLE=us rd.luks=0 LANG=en_US.UTF-8
rd.lvm.lv=vg_ovirt00/lv_swap
rd.lvm.lv=vg_ovirt/lv_swap rhgb quiet
        echo    'Loading initial ramdisk ...'
    ........

   After reboot your host, check:

    [root@firehome ~]# uname -a

   Test your storage use, I believe it will be alright.

PS: Get your version this VDSM package, example:

[root@firehome boot]# rpm -qa | grep vdsm
vdsm-python-4.10.0-10.fc17.x86_64
vdsm-bootstrap-4.10.0-10.fc17.noarch
vdsm-xmlrpc-4.10.0-10.fc17.noarch
vdsm-cli-4.10.0-10.fc17.noarch
vdsm-4.10.0-10.fc17.x86_64


Marcelo Barbosa
*mr.marcelo.barb...@gmail.com*


On Fri, Jan 4, 2013 at 6:50 PM, Yuval M <yuva...@gmail.com> wrote:

> uname -a output:
>
> Linux segfault.home 3.6.5-1.fc17.x86_64 #1 SMP Wed Oct 31 19:37:18 UTC
> 2012 x86_64 x86_64 x86_64 GNU/Linux
>
> and the other host:
>
> Linux kernelpanic.home 3.6.8-2.fc17.x86_64 #1 SMP Tue Nov 27 19:35:02 UTC
> 2012 x86_64 x86_64 x86_64 GNU/Linux
>
> if there is any other diagnostic information required I will happily
> supply it, just tell me what...
>
>
> Yuval
>
>
> On Fri, Jan 4, 2013 at 7:15 PM, Marcelo Barbosa <
> mr.marcelo.barb...@gmail.com> wrote:
>
>> Hi Yuval,
>>
>>    What is kernel version ? The oVirt stable version(3.1) run better
>> from:
>>
>>    [admin@firehome ~]$ uname -a
>> Linux firehome.no-ip.org *3.3.4-5*.fc17.x86_64 #1 SMP Mon May 7 17:29:34
>> UTC 2012 x86_64 x86_64 x86_64    GNU/Linux
>>
>> Marcelo Barbosa
>> *mr.marcelo.barb...@gmail.com*
>>
>>
>> On Fri, Jan 4, 2013 at 2:59 PM, Yuval M <yuva...@gmail.com> wrote:
>>
>>> Hello,
>>> We're M.Sc students at Tel-Aviv University trying to setup a basic ovirt
>>> system with 2 hosts.
>>> Both run Fedora Core 17.
>>>
>>> We've run unto a problem that makes the hosts seem down from the web
>>> management UI and stops the VMs that run on them.
>>> this occurs on both hosts at the very same second, which leads me to
>>> believe it's not a hardware problem:
>>> ("segfault" is the name of the server. don't ask.)
>>>
>>> Has anyone seen something like this?
>>> any suggestions?
>>> Thanks,
>>>
>>> Yuval Meir
>>> Limor Gavish
>>>
>>>
>>>
>>> Dec 29 14:00:10 segfault kernel: [403596.851539] NFS: Cache request
>>> denied due to non-unique superblock keys
>>> Dec 29 14:00:10 segfault kernel: [403596.930361] ata1: hard resetting
>>> link
>>> Dec 29 14:00:10 segfault kernel: [403597.237778] ata1: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:10 segfault kernel: [403597.239721] ata1: EH complete
>>> Dec 29 14:00:10 segfault kernel: [403597.241759] ata2: hard resetting
>>> link
>>> Dec 29 14:00:10 segfault kernel: [403597.548726] ata2: SATA link up 6.0
>>> Gbps (SStatus 133 SControl 300)
>>> Dec 29 14:00:10 segfault kernel: [403597.559061] ata2.00: configured for
>>> UDMA/133
>>> Dec 29 14:00:10 segfault kernel: [403597.559066] ata2: EH complete
>>> Dec 29 14:00:10 segfault kernel: [403597.559279] ata3: hard resetting
>>> link
>>> Dec 29 14:00:11 segfault kernel: [403597.866689] ata3: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:11 segfault kernel: [403597.868680] ata3: EH complete
>>> Dec 29 14:00:11 segfault kernel: [403597.868928] ata4: hard resetting
>>> link
>>> Dec 29 14:00:11 segfault kernel: [403598.176588] ata4: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:11 segfault kernel: [403598.178470] ata4: EH complete
>>> Dec 29 14:00:11 segfault kernel: [403598.178707] ata5: hard resetting
>>> link
>>> Dec 29 14:00:11 segfault kernel: [403598.485535] ata5: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:11 segfault kernel: [403598.487472] ata5: EH complete
>>> Dec 29 14:00:11 segfault kernel: [403598.487656] ata6: hard resetting
>>> link
>>> Dec 29 14:00:12 segfault kernel: [403598.795437] ata6: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:12 segfault kernel: [403598.797325] ata6: EH complete
>>> Dec 29 14:00:12 segfault kernel: [403598.797583] ata7: hard resetting
>>> link
>>> Dec 29 14:00:12 segfault kernel: [403599.105616] ata7: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:12 segfault kernel: [403599.107307] ata7: EH complete
>>> Dec 29 14:00:12 segfault kernel: [403599.109318] ata8: hard resetting
>>> link
>>> Dec 29 14:00:12 segfault kernel: [403599.416217] ata8: SATA link up 1.5
>>> Gbps (SStatus 113 SControl 300)
>>> Dec 29 14:00:12 segfault kernel: [403599.416650] ata8.00: configured for
>>> UDMA/66
>>> Dec 29 14:00:12 segfault kernel: [403599.416769] ata8: EH complete
>>> Dec 29 14:00:12 segfault kernel: [403599.416922] ata9: hard resetting
>>> link
>>> Dec 29 14:00:13 segfault kernel: [403599.722240] ata9: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:13 segfault kernel: [403599.722256] ata9: EH complete
>>> Dec 29 14:00:13 segfault kernel: [403599.722545] ata10: hard resetting
>>> link
>>> Dec 29 14:00:13 segfault kernel: [403600.027130] ata10: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:13 segfault kernel: [403600.027234] ata10: EH complete
>>> Dec 29 14:00:13 segfault kernel: [403600.027483] ata11.00: hard
>>> resetting link
>>> Dec 29 14:00:13 segfault kernel: [403600.331952] ata11.01: hard
>>> resetting link
>>> Dec 29 14:00:14 segfault kernel: [403600.787975] ata11.00: SATA link up
>>> 3.0 Gbps (SStatus 123 SControl 300)
>>> Dec 29 14:00:14 segfault kernel: [403600.787989] ata11.01: SATA link
>>> down (SStatus 0 SControl 300)
>>> Dec 29 14:00:14 segfault kernel: [403600.829480] ata11.00: configured
>>> for UDMA/133
>>> Dec 29 14:00:14 segfault kernel: [403600.829487] ata11: EH complete
>>> Dec 29 14:00:14 segfault kernel: [403600.829638] ata12.00: hard
>>> resetting link
>>> Dec 29 14:00:14 segfault kernel: [403601.133734] ata12.01: hard
>>> resetting link
>>> Dec 29 14:00:14 segfault kernel: [403601.589741] ata12.00: SATA link up
>>> 3.0 Gbps (SStatus 123 SControl 300)
>>> Dec 29 14:00:14 segfault kernel: [403601.589757] ata12.01: SATA link up
>>> 3.0 Gbps (SStatus 123 SControl 300)
>>> Dec 29 14:00:14 segfault kernel: [403601.600049] ata12.00: configured
>>> for UDMA/133
>>> Dec 29 14:00:14 segfault kernel: [403601.604444] ata12.01: configured
>>> for UDMA/133
>>> Dec 29 14:00:14 segfault kernel: [403601.604450] ata12: EH complete
>>> Dec 29 14:00:14 segfault kernel: [403601.604745] ata13: hard resetting
>>> link
>>> Dec 29 14:00:15 segfault kernel: [403601.921125] ata13: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:15 segfault kernel: [403601.921144] ata13: EH complete
>>> Dec 29 14:00:15 segfault kernel: [403601.921300] ata14: hard resetting
>>> link
>>> Dec 29 14:00:15 segfault kernel: [403602.377523] ata14: SATA link up 1.5
>>> Gbps (SStatus 113 SControl 300)
>>> Dec 29 14:00:15 segfault kernel: [403602.386842] ata14.00: configured
>>> for UDMA/100
>>> Dec 29 14:00:15 segfault kernel: [403602.392491] ata14: EH complete
>>> Dec 29 14:00:15 segfault kernel: [403602.392695] ata15: soft resetting
>>> link
>>> Dec 29 14:00:15 segfault kernel: [403602.543523] ata15: EH complete
>>> Dec 29 14:00:15 segfault kernel: [403602.543727] ata16: soft resetting
>>> link
>>> Dec 29 14:00:16 segfault kernel: [403602.706229] ata16: EH complete
>>> Dec 29 14:00:16 segfault vdsm Storage.LVM WARNING lvm vgs failed: 5 []
>>> ['  Volume group "78b1f41d-29cf-4e1a-a84d-fb9175f4388e" not found']
>>> Dec 29 14:00:16 segfault kernel: [403603.273230] ata1: hard resetting
>>> link
>>> Dec 29 14:00:16 segfault kernel: [403603.580216] ata1: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:16 segfault kernel: [403603.582803] ata1: EH complete
>>> Dec 29 14:00:16 segfault kernel: [403603.585201] ata2: hard resetting
>>> link
>>> Dec 29 14:00:17 segfault kernel: [403603.892210] ata2: SATA link up 6.0
>>> Gbps (SStatus 133 SControl 300)
>>> Dec 29 14:00:17 segfault kernel: [403603.901635] ata2.00: configured for
>>> UDMA/133
>>> Dec 29 14:00:17 segfault kernel: [403603.901641] ata2: EH complete
>>> Dec 29 14:00:17 segfault kernel: [403603.901873] ata3: hard resetting
>>> link
>>> Dec 29 14:00:17 segfault kernel: [403604.209120] ata3: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:17 segfault kernel: [403604.210966] ata3: EH complete
>>> Dec 29 14:00:17 segfault kernel: [403604.211156] ata4: hard resetting
>>> link
>>> Dec 29 14:00:17 segfault kernel: [403604.517966] ata4: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:17 segfault kernel: [403604.519902] ata4: EH complete
>>> Dec 29 14:00:17 segfault kernel: [403604.520157] ata5: hard resetting
>>> link
>>> Dec 29 14:00:18 segfault kernel: [403604.826862] ata5: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:18 segfault kernel: [403604.828830] ata5: EH complete
>>> Dec 29 14:00:18 segfault kernel: [403604.829067] ata6: hard resetting
>>> link
>>> Dec 29 14:00:18 segfault kernel: [403605.135731] ata6: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:18 segfault kernel: [403605.137698] ata6: EH complete
>>> Dec 29 14:00:18 segfault kernel: [403605.137887] ata7: hard resetting
>>> link
>>> Dec 29 14:00:18 segfault kernel: [403605.445714] ata7: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:18 segfault kernel: [403605.447619] ata7: EH complete
>>> Dec 29 14:00:18 segfault kernel: [403605.449682] ata8: hard resetting
>>> link
>>> Dec 29 14:00:19 segfault kernel: [403605.756684] ata8: SATA link up 1.5
>>> Gbps (SStatus 113 SControl 300)
>>> Dec 29 14:00:19 segfault kernel: [403605.757166] ata8.00: configured for
>>> UDMA/66
>>> Dec 29 14:00:19 segfault kernel: [403605.757266] ata8: EH complete
>>> Dec 29 14:00:19 segfault kernel: [403605.757485] ata9: hard resetting
>>> link
>>> Dec 29 14:00:19 segfault kernel: [403606.064643] ata9: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:19 segfault kernel: [403606.064660] ata9: EH complete
>>> Dec 29 14:00:19 segfault kernel: [403606.064839] ata10: hard resetting
>>> link
>>> Dec 29 14:00:19 segfault kernel: [403606.369548] ata10: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:19 segfault kernel: [403606.369562] ata10: EH complete
>>> Dec 29 14:00:19 segfault kernel: [403606.369842] ata11.00: hard
>>> resetting link
>>> Dec 29 14:00:20 segfault kernel: [403606.675420] ata11.01: hard
>>> resetting link
>>> Dec 29 14:00:20 segfault kernel: [403607.131342] ata11.00: SATA link up
>>> 3.0 Gbps (SStatus 123 SControl 300)
>>> Dec 29 14:00:20 segfault kernel: [403607.131355] ata11.01: SATA link
>>> down (SStatus 0 SControl 300)
>>> Dec 29 14:00:20 segfault kernel: [403607.248752] ata11.00: configured
>>> for UDMA/133
>>> Dec 29 14:00:20 segfault kernel: [403607.248759] ata11: EH complete
>>> Dec 29 14:00:20 segfault kernel: [403607.249045] ata12.00: hard
>>> resetting link
>>> Dec 29 14:00:20 segfault kernel: [403607.554194] ata12.01: hard
>>> resetting link
>>> Dec 29 14:00:21 segfault kernel: [403608.011215] ata12.00: SATA link up
>>> 3.0 Gbps (SStatus 123 SControl 300)
>>> Dec 29 14:00:21 segfault kernel: [403608.011244] ata12.01: SATA link up
>>> 3.0 Gbps (SStatus 123 SControl 300)
>>> Dec 29 14:00:21 segfault kernel: [403608.021439] ata12.00: configured
>>> for UDMA/133
>>> Dec 29 14:00:21 segfault kernel: [403608.028239] ata12.01: configured
>>> for UDMA/133
>>> Dec 29 14:00:21 segfault kernel: [403608.028243] ata12: EH complete
>>> Dec 29 14:00:21 segfault kernel: [403608.028442] ata13: hard resetting
>>> link
>>> Dec 29 14:00:21 segfault kernel: [403608.345178] ata13: SATA link down
>>> (SStatus 0 SControl 300)
>>> Dec 29 14:00:21 segfault kernel: [403608.345195] ata13: EH complete
>>> Dec 29 14:00:21 segfault kernel: [403608.345443] ata14: hard resetting
>>> link
>>> Dec 29 14:00:22 segfault kernel: [403608.800805] ata14: SATA link up 1.5
>>> Gbps (SStatus 113 SControl 300)
>>> Dec 29 14:00:22 segfault kernel: [403608.810109] ata14.00: configured
>>> for UDMA/100
>>> Dec 29 14:00:22 segfault kernel: [403608.815632] ata14: EH complete
>>> Dec 29 14:00:22 segfault kernel: [403608.815863] ata15: soft resetting
>>> link
>>> Dec 29 14:00:22 segfault kernel: [403608.966859] ata15: EH complete
>>> Dec 29 14:00:22 segfault kernel: [403608.967054] ata16: soft resetting
>>> link
>>> Dec 29 14:00:22 segfault kernel: [403609.130010] ata16: EH complete
>>> Dec 29 14:00:22 segfault vdsm Storage.LVM WARNING lvm vgs failed: 5 []
>>> ['  Volume group "f0175c0c-75f1-4518-ba77-f7476171f6c6" not found']
>>> Dec 29 14:00:22 segfault vdsm Storage.StorageDomain WARNING Resource
>>> namespace f0175c0c-75f1-4518-ba77-f7476171f6c6_imageNS already registered
>>> Dec 29 14:00:22 segfault vdsm Storage.StorageDomain WARNING Resource
>>> namespace f0175c0c-75f1-4518-ba77-f7476171f6c6_volumeNS already registered
>>> Dec 29 14:00:23 segfault vdsm Storage.LVM WARNING lvm vgs failed: 5 []
>>> ['  Volume group "78b1f41d-29cf-4e1a-a84d-fb9175f4388e" not found']
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users@ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
>>>
>>
>
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