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From "Chris Suich (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CLOUDSTACK-5172) Removing disks from VMWare VMs with snapshots causes problems
Date Thu, 14 Nov 2013 16:41:21 GMT
Chris Suich created CLOUDSTACK-5172:
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             Summary: Removing disks from VMWare VMs with snapshots causes problems
                 Key: CLOUDSTACK-5172
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-5172
             Project: CloudStack
          Issue Type: Bug
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: Snapshot, VMware
    Affects Versions: 4.3.0
            Reporter: Chris Suich
             Fix For: 4.3.0


We currently don’t allow volumes to be attached to VMs with snapshots and allowing volumes
to be detached causes quite a bug:

1) Attach a data disk to a VM
2) Snapshot the VM
3) Detach the data disk
4) Attempt to restore the VM from the snapshot — FAILS since the data disk is no longer
there, although it is expected to be
5) Attempt to re-attach the volume to the VM — FAILS since you cannot attach volumes to
VMs with snapshots
6) Attempt to delete the VM snapshot — FAILS since the data disk is no longer there, although
it is expected to be

I have verified the above steps on VMWare, however Xen does not appear to fail on step 4,
presumably because VMWare handles snapshots quite differently than Xen.

After discussion on the dev list, it sounds like the proper course of action would be to prohibit
disks from being detached from VMWare VMs with snapshots.



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