Eror when merging LVM snapshot
hwerner at score-md.com
Thu May 3 16:06:32 UTC 2012
I wanted to get some help about LVM2 snapshots, but I'm not sure where
I'm using LVM2 with KVM instances, it works great. I then wanted to play
a little bit with the LVM snapshot merging facility, as long as the VM
is powered off it works perfectly, but when I tried with a powered on VM
I ran into troubles. The merging did not start and is now stuck :
--- Logical volume ---
LV Name /dev/ScoreMD_VG01/LV_VM_SQUEEZE
VG Name ScoreMD_VG01
LV UUID 9v7Jcm-vkcq-2tiq-1uFP-yDsU-zLib-JfivEM
LV Write Access read/write
LV snapshot status source of
LV Status available
# open 0
LV Size 25,00 GiB
Current LE 6400
Read ahead sectors auto
- currently set to 256
Block device 254:6
/dev/ScoreMD_VG01/LV_VM_SQUEEZE hosts my VM
disk, /dev/ScoreMD_VG01/SQUEEZE_SNAP is the snapshot.
dmsetup status :
ScoreMD_VG01-SQUEEZE_SNAP: 0 52428800 error
ScoreMD_VG01-LV_VM_SQUEEZE: 0 52428800 snapshot-merge Invalid
ScoreMD_VG01-LV_VM_SQUEEZE-real: 0 52428800 linear
I would like to delete the snapshot and recover the original volume.
I will be very happy if someone could give me some hints or redirect me
to the right place for asking for help.
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