Hi there,
the day before I started to do my first tests with lvm on Linux. I
installed a fresh SuSE 9.2 on a machine with two identical disks,
created 3 RAID 1 partitions and created on top of all this my first
logical volume on Linux. Actually I created this "root" volume first,
and installed SuSE on it. No problems so far. I was able to increase
the "root" volume, I was able to create another "test" volume and
shrink it when it was not mounted ... cool stuff - really.
The next thing I wanted to test was moving a logical volume from one
physical volume to another. Usecase: replacement of an old/too
small/for whatever reason unwanted disk by another. This was perfectly
ok with the "test" volume - the one that I was able to shrink before.
But when I tried the same with the "root" volume pvmove locked and I
had to reset the machine. On the next boot the machine reported
problems with the volume group on which the root volume is located and
entered a recovery shell. There I had to call "lvm pvmove --abort" and
after another restart the machine booted again. After this first
experience I tried to upgrade the pached SuSE 2.6.8 kernel to a vanilla
2.6.9 from kernel.org, I upgraded the lvm2 binaries from version 2.0.25
to 2.0.29 - no changes. I googled around ... I found some reports about
problems with pvmove - but nothing that matched my actual problem (as
far as I can see it). So my hope is that someone here can help me a
step further with this problem.
There were no messages in syslog when the machine stopped. The visible
output of "pvmove -vv -n Root /dev/md0 /dev/md2" was:
Setting global/locking_type to 1
Setting global/locking_dir to /var/lock/lvm
File-based locking enabled.
/dev/md0: lvm2 label detected
/dev/md0: lvm2 label detected
/dev/md0: lvm2 label detected
/dev/md1: lvm2 label detected
/dev/md2: lvm2 label detected
/dev/hda3: No label detected
/dev/hdc3: No label detected
/dev/md0: lvm2 label detected
/dev/md2: lvm2 label detected
/dev/md0: lvm2 label detected
/dev/md2: lvm2 label detected
Finding volume group "system"
Locking /var/lock/lvm/V_system WB
/dev/md0: lvm2 label detected
/dev/md2: lvm2 label detected
/dev/md0: lvm2 label detected
/dev/md2: lvm2 label detected
Archiving volume group "system" metadata.
Creating logical volume pvmove0
Getting target version for mirror
Moving /dev/md0:0-1023 of system/Root
Moving /dev/md0:1610-1737 of system/Root
Moving 1152 extents of logical volume system/Root
Finding volume group for uuid
Qo3GHB44Twwv7MYsUjJtWUCuPH5P2vviIikXQlamoffNvHYy5DUCF66jqwCCepYC
/dev/md0: lvm2 label detected
/dev/md2: lvm2 label detected
/dev/md0: lvm2 label detected
/dev/md2: lvm2 label detected
Found volume group "system"
Setting activation/missing_stripe_filler to /dev/ioerror
Updating volume group metadata
Creating volume group backup "/etc/lvm/backup/system"
Finding volume group for uuid
Qo3GHB44Twwv7MYsUjJtWUCuPH5P2vviIikXQlamoffNvHYy5DUCF66jqwCCepYC
/dev/md0: lvm2 label detected
/dev/md2: lvm2 label detected
/dev/md0: lvm2 label detected
/dev/md2: lvm2 label detected
Found volume group "system"
Locking memory
Suspending system-Root
Finding volume group for uuid
Qo3GHB44Twwv7MYsUjJtWUCuPH5P2vviK1M7zT9n1b350JWv5oYIL2CJuiUVy1iz
/dev/md0: lvm2 label detected
/dev/md2: lvm2 label detected
/dev/md0: lvm2 label detected
/dev/md2: lvm2 label detected
Found volume group "system"
Loading system-pvmove0
Setting activation/mirror_region_size to 512
--
Van Roy's Law: -------------------------------------------------------
An unbreakable toy is useful for breaking other toys.
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