[CentOS] LVM failure after CentOS 7.6 upgrade -- possible corruption
Gordon Messmer
gordon.messmer at gmail.com
Thu Dec 6 04:34:01 UTC 2018
On 12/5/18 9:27 AM, Gordon Messmer wrote:
> The content of /var/log/messages is here:
> https://paste.fedoraproject.org/paste/n-E6X76FWIKzIvzPOw97uw
I don't have much new information, other than that I tested booting a
similar system with an intentionally degraded RAID volume. That one
booted properly, so I don't think that was the problem. The dm-cache
device still needs further investigation, but I'm going to wait for all
RAID arrays to re-sync before further testing.
Going through the log again, I'm looking at this line:
Dec 4 21:17:34 ascension lvm: WARNING: Device mismatch detected for
VolGroup/lv_root which is accessing /dev/md127 instead of /dev/sda3.
Since it says "is accessing /dev/md127", I think the kernel activated
the LVs properly, in which case there shouldn't be any corruption risk.
I still can't reason why the lvm tools were scanning the component
volumes to begin with.
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