yahoo-eng-team team mailing list archive

[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => juno-3

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1327497

Title:
  live-migration fails when FC multipath is used

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  I tried live-migration against VM with multipath access to FC bootable volume and FC data volume.
  After checking the code, I found the reason is that
  1. /dev/dm-<NUM> is used, which is subject to change in the destination Compute Node since it is not unique across nodes
  2. multipath_id in connnection_info is not maintained properly and may be lost during connection refreshing

  The fix would be
  1. Like iSCSI multipath, use /dev/mapper/<multipath_id> instead of /dev/dm-<NUM>
  2. Since multipath_id is unique for a volume no matter where it is attached, add logic to preserve this information.

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1327497/+subscriptions