XenServer - Nova-Compute StorageError Waiting for device

Please attach a longer output from the log file; there are debug messages immediately before the TRACE that could be useful in identifying the problem.

I suspect the issue is that the Nova Compute domain must be running as PV, not HVM with PV tools. You can convert the domain using a guide such as http://wiki.univention.com/index.php?title=Citrix_Xen_Server#Convert_the_UCS_system_to_paravirtualization

Was this boot from volume? there is a bug that has been recently fixed in that area.

What version of Nova is this please?

Long incomplete bug

Identified + confirmed this issue.

vdi_attached_here retrieves a "guess" of the device name from XAPI. When using HVM guests, XAPI assumes that the guest is Windows and therefore returns "hdb". This is clearly wrong.

We need to change the _wait_for_dev function to iterate over sysfs to find the correct disk.
e.g. assuming the UUID of the disk plugged was 8bf0e9c2-b636-4e43-a1a4-e02a339d7d82:
{quote}
root@DevStackOSDomU:~# xenstore-read domid
35
root@DevStackOSDomU:~# ls -d /sys/devices/vbd-*
/sys/devices/vbd-51712 /sys/devices/vbd-51728

root@DevStackOSDomU:~# xenstore-read /local/domain/0/backend/vbd/35/51712/vdi
["VDI", "1a6bad09-c13f-c7dd-b0af-cfb7e8de518c\\/9dcb54df-71f0-46eb-8db5-400f62e68629"]

root@DevStackOSDomU:~# xenstore-read /local/domain/0/backend/vbd/35/51728/vdi
["VDI", "1a6bad09-c13f-c7dd-b0af-cfb7e8de518c\\/8bf0e9c2-b636-4e43-a1a4-e02a339d7d82"]

root@DevStackOSDomU:~# ls /sys/devices/vbd-51728/block
xvdb
{/quote}

Fix proposed to branch: master
Review: https://review.openstack.org/213112

Change abandoned by Michael Still (<email address hidden>) on branch: master
Review: https://review.openstack.org/213112
Reason: This patch has been sitting unchanged for more than 12 weeks. I am therefore going to abandon it to keep the nova review queue sane. Please feel free to restore the change if you're still working on it.

Change abandoned by Huan Xie (<email address hidden>) on branch: master
Review: https://review.openstack.org/213112
Reason: Will move the fix in os-xenapi

There are no currently open reviews on this bug, changing the status back to the previous state and unassigning. If there are active reviews related to this bug, please include links in comments.