[CentOS] KVM on CentOS 6

m.roth at 5-cent.us m.roth at 5-cent.us
Thu Sep 8 16:07:45 UTC 2011


Emmett Culley wrote:
> On 09/08/2011 02:25 AM, Nick wrote:
>> On 08/09/11 07:23, Emmett Culley wrote:
>>> Today I suddenly have two VMs that have read only file systems.  The
>>> host is CentOS 6, as are the two VMs with this problem.
>>
>> Disclaimer: I can't claim this matches your circumstance exactly, but it
>> is something you might check.
>>
<snip>
> I will give that a try.  However I remembered something about both failed
> VMs from my investigations yesterday and checked it out this morning on
> the one that is still available.  The last lines of syslog
> (/var/log/messages) are:
<snip>
> Sep  7 21:59:23 dev kernel: ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0
> action 0x6 frozen
> Sep  7 21:59:23 dev kernel: ata1.00: failed command: WRITE DMA
> Sep  7 21:59:23 dev kernel: ata1.00: cmd
> ca/00:08:a0:02:31/00:00:00:00:00/e3 tag 0 dma 4096 out
> Sep  7 21:59:23 dev kernel:         res
> 40/00:01:00:00:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
> Sep  7 21:59:23 dev kernel: ata1.00: status: { DRDY }
> Sep  7 21:59:23 dev kernel: ata1: soft resetting link
> Sep  7 21:59:23 dev kernel: ata1.00: configured for MWDMA2
> Sep  7 21:59:23 dev kernel: ata1.00: device reported invalid CHS sector 0
> Sep  7 21:59:23 dev kernel: ata1: EH complete
<snip>
Bad news, IMO: I think you have a hardware problem - looks like sector 0
of your h/d has gone bad.

Got backups? Got spare drive?

        mark




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