Ubuntu
nova package

  1. Bug #1766543
  2. Comment #5

Comment 5 for bug 1766543

Revision history for this message
Corey Bryant (corey.bryant) wrote :

Thanks for continuing to dig into this.

Comparing your nova-compute logs and the strace unlink details, the timestamps do seem to point to unlink causing the delay. Pasting the strace unlink output below inline with the nova-compute logs in order of occurrence:

nova-compute log:
2018-04-25 14:48:04.587 54255 INFO nova.virt.libvirt.driver [req-85551d96-713d-499d-b7ff-9f911fb0842d bc0ab055427645aca4ed09266e85b1db 1cb457a8302543fea067e5f14b5241e7 - - -] [instance: bd17aeef-240b-489c-8bb6-b37167155174] Deleting instance files /srv/nova/instances/bd17aeef-240b-489c-8bb6-b37167155174_del

strace unlink:
54255 14:48:04.593792 unlink("/srv/nova/instances/bd17aeef-240b-489c-8bb6-b37167155174_del/disk" <unfinished ...>

strace unlink:
54255 14:52:06.349167 <... unlink resumed> ) = 0
54255 14:52:06.349430 unlink("/srv/nova/instances/bd17aeef-240b-489c-8bb6-b37167155174_del/disk.info") = 0

nova-compute log:
2018-04-25 14:52:06.350 54255 INFO nova.virt.libvirt.driver [req-85551d96-713d-499d-b7ff-9f911fb0842d bc0ab055427645aca4ed09266e85b1db 1cb457a8302543fea067e5f14b5241e7 - - -] [instance: bd17aeef-240b-489c-8bb6-b37167155174] Deletion of /srv/nova/instances/bd17aeef-240b-489c-8bb6-b37167155174_del complete

This might be worth passing by kernel folks to get their opinion.