[linux-lvm] kernel errors from a merging snapshot

[Lentes, Bernd]

Hi,

i have a /-filesystem residing on a lv. I also had a snapshot of that lv because I tried some software. After testing the software I merged the snapshot into the origin, by rebooting. It seemed to went fine.
Btw: how do I know when merging is finished ? Where can I see results from the merging ?
But in /var/log/messages I have error messages about a block device:

Oct 14 16:22:45 vm59093-4 kernel: [    7.580247] Buffer I/O error on device dm-3, logical block 0
Oct 14 16:22:45 vm59093-4 kernel: [    7.580254] Buffer I/O error on device dm-3, logical block 1
Oct 14 16:22:45 vm59093-4 kernel: [    7.580258] Buffer I/O error on device dm-3, logical block 2
Oct 14 16:22:45 vm59093-4 kernel: [    7.580261] Buffer I/O error on device dm-3, logical block 3
Oct 14 16:22:45 vm59093-4 kernel: [    7.580264] Buffer I/O error on device dm-3, logical block 0
Oct 14 16:22:45 vm59093-4 kernel: [    7.580271] Buffer I/O error on device dm-3, logical block 9961471
Oct 14 16:22:45 vm59093-4 kernel: [    7.580274] Buffer I/O error on device dm-3, logical block 9961471
Oct 14 16:22:45 vm59093-4 kernel: [    7.580341] Buffer I/O error on device dm-3, logical block 0
Oct 14 16:22:45 vm59093-4 kernel: [    7.580345] Buffer I/O error on device dm-3, logical block 1

Dm-3 is the snapshot I merged (although I named it root-snapshot while creating, not root--snapshot !):

Dmsetup info says:

...
Name:              vg_1-root--snapshot
State:             ACTIVE
Read Ahead:        1024
Tables present:    LIVE
Open count:        0
Event number:      0
Major, minor:      252, 3
Number of targets: 1
UUID: LVM-ZfsXYr9bkOt1d9bMNpcrn7MxH2aX6H0bhELCnywHd7rbddry6f63xtkk1vqs1hvv
...

The errors appeared during the reboot. Is that normal ?


Bernd

--
Bernd Lentes

Systemadministration
Institut für Entwicklungsgenetik
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