[ovirt-users] Disk from FC storage not removed

[Krzysztof Dajka]

Hi,

Recently I tried to delete 1TB disk created on top ~3TB LUN from
ovirtengine.
Disk is preallocated and I backuped data to other disk so I could recreate
it once again as thin volume. I couldn't remove this disk when it was
attached to a VM. But once I detached it I could remove it permanently. The
thing is it only disappeared from ovirtengine GUI.

I've got 4 hosts with FC HBA attached to storage array and all of them are
saying that this 1TB disk which should be gone is opened by all
hosts simultaneously.

[root at wrops1 BLUE ~]# lvdisplay -m
/dev/e69d1c16-36d1-4375-aaee-69f5a5ce1616/ee53af81-820d-4916-b766-5236ca99daf8
  --- Logical volume ---



  LV Path
 /dev/e69d1c16-36d1-4375-aaee-69f5a5ce1616/ee53af81-820d-4916-b766-5236ca99daf8


  LV Name                ee53af81-820d-4916-b766-5236ca99daf8



  VG Name                e69d1c16-36d1-4375-aaee-69f5a5ce1616



  LV UUID                sBdBRk-tNyZ-Rval-F4lw-ka6X-wOe8-AQenTb



  LV Write Access        read/write



  LV Creation host, time wrops1.blue, 2015-07-31 10:40:57 +0200



  LV Status              available



  # open                 1



  LV Size                1.00 TiB



  Current LE             8192



  Segments               1



  Allocation             inherit



  Read ahead sectors     auto



  - currently set to     8192



  Block device           253:29







  --- Segments ---
  Logical extents 0 to 8191:
    Type                linear
    Physical volume     /dev/mapper/3600000e00d0000000024057200000000
    Physical extents    8145 to 16336

Deactivating LV doesn't work:
[root at wrops1 BLUE ~]# lvchange -an
/dev/e69d1c16-36d1-4375-aaee-69f5a5ce1616/ee53af81-820d-4916-b766-5236ca99daf8
  Logical volume
e69d1c16-36d1-4375-aaee-69f5a5ce1616/ee53af81-820d-4916-b766-5236ca99daf8
is used by another device.


Removing from hypervisor doesn't work either.
[root at wrops1 BLUE ~]# lvremove --force
/dev/e69d1c16-36d1-4375-aaee-69f5a5ce1616/ee53af81-820d-4916-b766-5236ca99daf8
  Logical volume
e69d1c16-36d1-4375-aaee-69f5a5ce1616/ee53af81-820d-4916-b766-5236ca99daf8
is used by another device.

I tried and rebooted one host and as soon as it booted the volume became
opened once again. Lsof on all hosts doesn't give anything meaningful
regarding this LV. As opposed to other LV which are used by qemu-kvm.

Has anyone encountered similar problem? How can I remove this LV?
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