os-brick

Extending SCSI multipath doesn't work if Nova configuration changed

Bug #2009157 reported by Gorka Eguileor
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
os-brick
New
Medium
Rajat Dhasmana

Bug Description

Our current extend volume code in linuxscsi.py only extends a multipath if the connector has been instantiated with `use_multipath=True`, but that wrong, because what's important is whether the volume was attached with multipath and the VM is using a multipath device, not if the current value of the parameter.

This should be easy to test:

1- Start Nova compute service with:
  [libvirt]
  volume_use_multipath = True

2- Attach a cinder volume to an instance

3- Restart nova cpu after changing configuration configuration to
  [libvirt]
  volume_use_multipath = False

4- Extend the volume

Sofia Enriquez (lsofia-enriquez)
Changed in os-brick:
importance: Undecided → Medium
Rajat Dhasmana (whoami-rajat)
Changed in os-brick:
assignee: nobody → Rajat Dhasmana (whoami-rajat)
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