[linux-lvm] Cannot create more than one snapshot per origin
Christoph Peus
cp at uni-wh.de
Wed Jul 12 09:05:34 UTC 2006
Hi,
when I try to create more than one snapshot of the same origin, the
second and following snapshots are marked "inactive" and report
Input/output errors all the time:
Berfore the first snapshot:
lunkwill pri # lvscan
ACTIVE '/dev/export/lvol0' [1.34 TB] inherit
ACTIVE '/dev/export/lvol1' [800.00 GB] inherit
lunkwill pri # lvcreate -s -L20G -n test /dev/export/lvol0
Logical volume "test" created
lunkwill pri # lvscan
ACTIVE Original '/dev/export/lvol0' [1.34 TB] inherit
ACTIVE '/dev/export/lvol1' [800.00 GB] inherit
ACTIVE Snapshot '/dev/export/test' [20.00 GB] inherit
Everything's fine so far. Now the trouble starts:
lunkwill pri # lvcreate -s -L20G -n test2 /dev/export/lvol0
Logical volume "test2" created
lunkwill pri # lvscan
/dev/export/test2: read failed after 0 of 4096 at 1473844805632:
Input/output error
/dev/export/test2: read failed after 0 of 4096 at 0: Input/output error
inactive Original '/dev/export/lvol0' [1.34 TB] inherit
ACTIVE '/dev/export/lvol1' [800.00 GB] inherit
ACTIVE Snapshot '/dev/export/test' [20.00 GB] inherit
inactive Snapshot '/dev/export/test2' [20.00 GB] inherit
I'm using an xfs filesystem on /dev/export/lvol0 and the following
software versions:
kernel: vanilla 2.6.15.1
device-mapper: 1.02.07
lvm2: 2.02.05
Thanks for your help in advance!
Regards
Christoph
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