Nova cannot use the multipath path for creating VMs
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Mirantis OpenStack |
Invalid
|
Medium
|
MOS Nova | ||
7.0.x |
Fix Released
|
Medium
|
Rodion Tikunov |
Bug Description
MOS 7.0
After updating the "multipath-tools" package nova cannot use the multipath path for creating VMs.
In the libvirt.xml file of the instance we can see not multipath path <source dev>:
<source dev="/dev/
The multipath path should appear as:
<source dev="/dev/
In the nova-compute.log file we can see the following warnings:
2016-05-03 12:42:46.503 8299 WARNING nova.storage.
2016-04-07 09:34:24.286 9549 WARNING nova.storage.
The output of "multipath -l" command is
# multipath -l /dev/sdc
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
May 13 12:53:50 | /lib/udev/scsi_id exitted with 1
360002ac0000000
size=1.0G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=-1 status=active
|- 1:0:0:0 sdc 8:32 active undef running
|- 1:0:1:0 sdb 8:16 active undef running
|- 2:0:1:0 sdd 8:48 active undef running
`- 2:0:0:0 sde 8:64 active undef running
In the old version of multipath-tools, the output was
# multipath -l /dev/sdh
360002ac0000000
size=19G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=-1 status=active
|- 1:0:0:0 sdb 8:16 active undef running
|- 1:0:0:1 sdc 8:32 active undef running
|- 1:0:0:2 sdd 8:48 active undef running
|- 1:0:0:3 sde 8:64 active undef running
|- 1:0:1:0 sdg 8:96 active undef running
|- 1:0:1:1 sdh 8:112 active undef running
|- 1:0:1:2 sdi 8:128 active undef running
|- 1:0:1:3 sdj 8:144 active undef running
|- 2:0:0:0 sdl 8:176 active undef running
|- 2:0:0:1 sdm 8:192 active undef running
|- 2:0:0:2 sdn 8:208 active undef running
|- 2:0:0:3 sdo 8:224 active undef running
|- 2:0:1:0 sdq 65:0 active undef running
|- 2:0:1:1 sdr 65:16 active undef running
|- 2:0:1:2 sds 65:32 active undef running
`- 2:0:1:3 sdt 65:48 active undef running
Changed in mos: | |
status: | New → Confirmed |
assignee: | MOS Nova (mos-nova) → MOS Maintenance (mos-maintenance) |
importance: | High → Medium |
tags: | added: area-nova |
tags: | added: ct2 |
Changed in mos: | |
milestone: | 7.0-updates → 7.0-mu-4 |
Changed in mos: | |
milestone: | 7.0-mu-4 → 8.0-updates |
assignee: | MOS Maintenance (mos-maintenance) → MOS Nova (mos-nova) |
status: | Confirmed → Invalid |
no longer affects: | mos/8.0.x |
tags: | added: ct-patched-7.0 |
In addition: MOS 7.0