|
Dear all, I have a
problem with creating snapshots on the vanilla Linux2.6.11.5 kernel. I cannot
create more than 3 snapshots on a logical volume when the system is busy
writing to the logical volume. When creating the fourth snapshot the lvm.static
just hangs there, and the process that writes data to the logical volume also
hangs. The system is still running though, and I can access the system through
ssh and do other things, but LVM subsystem is hung. The filesystem on the logical
volume is XFS and the physical volume underneath is a RAID5. The following
lines are from /proc/slabinfo which may be useful: dm-snapshot-in
128 140 56
70 1 : tunables 120 60 0
: slabdata 2
2 0 dm-snapshot-ex 498095
498108 24 156 1 :
tunables 120 60 0 : slabdata
3193 3193 0 dm_tio
23549 52206 16 226 1 :
tunables 120 60 0 :
slabdata 231
231 0 dm_io
23548 51754 16 226 1 :
tunables 120 60 0 :
slabdata 229
229 0 Has anybody
seen similar problem? Any suggestion would be greatly appreciated! Regards. Charles |
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