** Also affects: nova
Importance: Undecided
Status: New
** Changed in: nova
Status: New => Confirmed
** Changed in: nova
Importance: Undecided => Critical
** Changed in: nova
Assignee: (unassigned) => Lee Yarwood (lyarwood)
** Tags added: wallaby-rc-potential
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https://bugs.launchpad.net/bugs/1921381
Title:
iSCSI: Flushing issues when multipath config has changed
Status in OpenStack Compute (nova):
Confirmed
Status in os-brick:
In Progress
Status in os-brick wallaby series:
New
Status in os-brick xena series:
In Progress
Bug description:
OS-Brick disconnect_volume code assumes that the use_multipath
parameter that is used to instantiate the connector has the same value
than the connector that was used on the original connect_volume call.
Unfortunately this is not necessarily true, because Nova can attach a
volume, then its multipath configuration can be enabled or disabled,
and then a detach can be issued.
This leads to a series of serious issues such as:
- Not flushing the single path on disconnect_volume (possible data loss) and
leaving it as a leftover device on the host when Nova calls
terminate-connection on Cinder.
- Not flushing the multipath device (possible data loss) and leaving it as a
lefover device similarly to the other case.
To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1921381/+subscriptions
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