[solved] lvm trouble - trying to move data

Hi,
I have 3 harddrives in my box. 1x 500GB, 2x 1TB. They are all in the same volume group. What I'd like to do, is migrate all the data in the "home" logical volume to sdb1 and sdc1, so the small harddrive doesn't hold any data other than swap and root. Then I'd like to split the volume group into two parts - lvmvolume should only reside on the small harddrive and a new volume group would be created, spanning the two large drives, with one logical volume covering the entire volume group.
I want to do this while keeping all my data, is it possible? I tried:
root@ion:~# pvmove --interval 10 --verbose --name home /dev/sda2 /dev/sdb1 /dev/sdc1
Finding volume group "lvmvolume"
No free extents on physical volume "/dev/sdb1"
Archiving volume group "lvmvolume" metadata (seqno 14).
Creating logical volume pvmove0
Moving 113834 extents of logical volume lvmvolume/home
Found volume group "lvmvolume"
Updating volume group metadata
Creating volume group backup "/etc/lvm/backup/lvmvolume" (seqno 15).
Found volume group "lvmvolume"
Found volume group "lvmvolume"
Suspending lvmvolume-home (252:2) with device flush
Found volume group "lvmvolume"
Creating lvmvolume-pvmove0
Loading lvmvolume-pvmove0 table
Resuming lvmvolume-pvmove0 (252:3)
Found volume group "lvmvolume"
Loading lvmvolume-pvmove0 table
Suppressed lvmvolume-pvmove0 identical table reload.
Loading lvmvolume-home table
Resuming lvmvolume-home (252:2)
Checking progress every 10 seconds
/dev/sda2: Moved: 100.0%
ABORTING: Can't find mirror LV in lvmvolume for /dev/sda2
This is the setup:
mount
/dev/sda1 on /boot type ext3 (rw)
/dev/mapper/lvmvolume-home on /home type ext4 (rw,noatime)
pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name lvmvolume
PV Size 465.67 GB / not usable 3.40 MB
Allocatable yes
PE Size (KByte) 4096
Total PE 119210
Free PE 113834
Allocated PE 5376
PV UUID WnXSJA-hXKN-B6Um-tH3H-gap2-q794-9y3mXW
--- Physical volume ---
PV Name /dev/sdb1
VG Name lvmvolume
PV Size 931.51 GB / not usable 1.71 MB
Allocatable yes (but full)
PE Size (KByte) 4096
Total PE 238467
Free PE 0
Allocated PE 238467
PV UUID vmujLm-JyvQ-nyjF-7BnQ-pwA2-gOSN-F0uEnK
--- Physical volume ---
PV Name /dev/sdc1
VG Name lvmvolume
PV Size 931.51 GB / not usable 3.19 MB
Allocatable yes
PE Size (KByte) 4096
Total PE 238466
Free PE 124632
Allocated PE 113834
PV UUID uwEwJd-0SWz-1ALu-APyW-hp0C-Okxm-yVK1Ig
vgdisplay
--- Volume group ---
VG Name lvmvolume
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 17
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 3
Act PV 3
VG Size 2.27 TB
PE Size 4.00 MB
Total PE 596143
Alloc PE / Size 357677 / 1.36 TB
Free PE / Size 238466 / 931.51 GB
VG UUID E15rQM-mRJc-OLJH-C3Jo-NL6Y-g2ZQ-MP7PSz
lvdisplay
--- Logical volume ---
LV Name /dev/lvmvolume/swap
VG Name lvmvolume
LV UUID nxHb1T-Oxip-PYXC-2lkU-7dgP-lwKO-ItLnWA
LV Write Access read/write
LV Status available
# open 2
LV Size 1.00 GB
Current LE 256
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:0
--- Logical volume ---
LV Name /dev/lvmvolume/root
VG Name lvmvolume
LV UUID HNx4CY-lpkL-11Io-1Mws-w5Rq-hKT7-KSNQQw
LV Write Access read/write
LV Status available
# open 1
LV Size 20.00 GB
Current LE 5120
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:1
--- Logical volume ---
LV Name /dev/lvmvolume/home
VG Name lvmvolume
LV UUID 6RyTY2-3qkw-hffb-sxtK-06dX-FGa2-iazeJj
LV Write Access read/write
LV Status available
# open 1
LV Size 1.34 TB
Current LE 352301
Segments 2
Allocation contiguous
Read ahead sectors auto
- currently set to 256
Block device 252:2
Last edited by Fackamato (2010-02-03 09:26:01)

Sorry for a new post but the first one is so long. It appears that I've successfully migrated all data belonging to /dev/lvmvolume/home that were on /dev/sda2 to the other two harddrives, correct?
root@ion:~# pvmove --interval 10 --verbose --name home /dev/sda2
Finding volume group "lvmvolume"
Archiving volume group "lvmvolume" metadata (seqno 17).
Creating logical volume pvmove0
No data to move for lvmvolume
edit: I put the new HDD in the same lvm, then transferred all stuff away from the 500GB, removed it from the lvg, created a new lvg on it, rsync'ed back the root fs, created a swap, changed fstab and kernel lines, rebooted and it looks like it's all good!
Last edited by Fackamato (2010-02-03 09:27:10)

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