1509398: Performance issue during volume detachment in ISCSIConnector when iSCSI multipath is used
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| Mirantis OpenStack |
Invalid
|
High
|
Alexey Stupnikov | ||
| 7.0.x |
Confirmed
|
High
|
Alexey Stupnikov | ||
Bug Description
This is a "sub-bug" of https:/
When detaching a multipath volume in an environment where there are many attached volumes, excessive multipath calls are
generated and it takes too much time. This issue is due to the fact that a multipath -ll call against many multipath devices takes a few seconds.
When detaching a volume, _disconnect_
Original issue: https:/
Original code-review: https:/
| Changed in mos: | |
| milestone: | 7.0-mu-2 → 7.0-updates |
| description: | updated |
| Alexey Stupnikov (astupnikov) wrote | #1 |
| Changed in mos: | |
| milestone: | 7.0-updates → 8.0 |
| status: | Confirmed → New |
| Changed in mos: | |
| status: | New → Invalid |
Original patch was pushed to fix the bug with os-brick in Liberty release. Liberty components use os-brick software to initiate all block storage connections. The purposed fix was backported from liberty to kilo, but only cinder drivers utilises brick in kilo, nova has its own iSCSI initiator. So the patch wouldn't fix anything, since nova compute will still work the old way.