touch-packages team mailing list archive

[Dariusz Gadomski <1383905@xxxxxxxxxxxxxxxxxx>]

Assuming that:
* vg0 is the volume group in question
* lv0 is the logical volume
* sdc is the physical volume that needs to be freed

there is a workaround possible:
1. lvconvert --mirrorlog core -m 1 /dev/vg0/lv0
2. lvconvert --mirrorlog core -m 0 vg0/lv0 /dev/sdc
3. vgreduce vg0 /dev/sdc

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https://bugs.launchpad.net/bugs/1383905

Title:
  pvmove fails while clvm is in use (Device or resource busy)

Status in “lvm2” package in Ubuntu:
  New

Bug description:
  1. Affected release: precise (12.04) 
  2. Affected version: clvm 2.02.66-4ubuntu7.4
  3. Steps to reproduce:
  a Setup:
  * SAN server serving 3 drives
  * Cluster consisting of 2 nodes
  b. Connect drives to the cluster (open-iscsi)
  c. Configure clvm.
  d. Create PV on all 3 drives. Create clustered VG consisting of 2 of those drives.
  e. Create LV with size > 10GB
  f. Create a file on the LV utilizing more space that the size of 1 PV.
  g. Extend the VG with the 3rd drive.
  h. pvmove on one of the first two drives.

  4. What you expected to happen
  pvmove succeeds freeing the first selected drive for later removal with vgreduce.

  5. What happened instead:
  sudo pvmove -v /dev/sdc
  Finding volume group "vg0"
  Executing: /sbin/modprobe dm-log-clustered
  FATAL: Module dm_log_clustered not found.
  /sbin/modprobe failed: 1
  Detected pvmove in progress for /dev/sdc
  Error locking on node server1: Device or resource busy
  Failed to activate lv0

  6. Other information: this issue does not affect trusty (and later)
  release

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