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[linux-lvm] lvextend fails with: Failed to suspend home_lv



Hi,

I've got a 2.6.18-rc5-mm1 kernel on an Dual processor Xeon 550mhz
system running Debian unstable, updated today.  I've got a pair of
120gb disks mirrored using md, setup so that the single partition
on the disks is /dev/md0.  I've got a PV setup on there, with a couple
of LVs, which then have ext3 filesystems on them, mounted as /home and
/local respectively.  

I just removed another LV which I didn't need anymore of around 25G in
size.  I'd like to now lvextend one of my two remaining LVs to then
beable to re-size the ext3 filesystem for more space.  But I get:

  # lvextend -v -L +1g /dev/data_vg/home_lv
    Finding volume group data_vg
    Archiving volume group "data_vg" metadata (seqno 16).
    Extending logical volume home_lv to 52.00 GB
    Creating volume group backup "/etc/lvm/backup/data_vg" (seqno 17).
    Found volume group "data_vg"
    Found volume group "data_vg"
    Loading data_vg-home_lv table
    device-mapper: reload ioctl failed: Invalid argument
    Failed to suspend home_lv

My details:

  # lvm version
    LVM version:     2.02.06 (2006-05-12)
    Library version: 1.02.08 (2006-07-17)
    Driver version:  4.8.0

  # vgs
    VG      #PV #LV #SN Attr   VSize   VFree 
    data_vg   1   3   0 wz--n- 111.79G 24.79G

  # pvs --segments
    PV         VG      Fmt  Attr PSize   PFree  Start SSize
    /dev/md0   data_vg lvm2 a-   111.79G 24.79G     0 10240
    /dev/md0   data_vg lvm2 a-   111.79G 24.79G 10240  7680
    /dev/md0   data_vg lvm2 a-   111.79G 24.79G 17920  2816
    /dev/md0   data_vg lvm2 a-   111.79G 24.79G 20736  1280
    /dev/md0   data_vg lvm2 a-   111.79G 24.79G 22016   256
    /dev/md0   data_vg lvm2 a-   111.79G 24.79G 22272  6345

  # lvs --segments
    LV       VG      Attr   #Str Type   SSize  
    home_lv  data_vg -wi-ao    1 linear 40.00G 
    home_lv  data_vg -wi-ao    1 linear 11.00G 
    local_lv data_vg -wi-ao    1 linear 30.00G 
    local_lv data_vg -wi-ao    1 linear  5.00G 
    test     data_vg -wi-a-    1 linear  1.00G 


In my dmesg log I'm seeing the following:

  device-mapper: table: 253:0: linear: dm-linear: Device lookup failed
  device-mapper: ioctl: error adding target to table

Any hints on what I need to do here?  I can create a test LV (as shown
above) but I can't extend either LV which already exists.

Thanks,
John


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