live-migration fails when FC multipath is used
Bug #1327497 reported by
Jeegn Chen
This bug affects 2 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
OpenStack Compute (nova) |
Fix Released
|
Undecided
|
Jeegn Chen | ||
Icehouse |
Fix Released
|
Undecided
|
ChangBo Guo(gcb) |
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/
2. Since multipath_id is unique for a volume no matter where it is attached, add logic to preserve this information.
Changed in nova: | |
assignee: | nobody → Jeegn Chen (jeegn-chen) |
status: | New → In Progress |
description: | updated |
Changed in nova: | |
milestone: | none → juno-3 |
status: | Fix Committed → Fix Released |
Changed in nova: | |
milestone: | juno-3 → 2014.2 |
tags: | removed: in-stable-icehouse |
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Fix proposed to branch: master /review. openstack. org/98738
Review: https:/