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nova/releasenotes/notes/fix-image-utime-race-condition-3c404e272ea91b34.yaml
Tim Rozet 525631d8dc Fixes race condition with privsep utime
There is a race condition that occurs over NFS when multiple instances
are being created where utime fails, due to some other process
modifying the file path. This patch ensures the path is created and
is readable before attempting to modify with utime.

Closes-Bug: 1809123

Change-Id: Id68aa27a8ab08d9c00655e5ed6b48d194aa8e6f6
Signed-off-by: Tim Rozet <trozet@redhat.com>
2019-03-01 16:42:16 -05:00

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fixes:
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Fixes a race condition when multiple instances are launched at the same
time, which leads to a failure when modifying the modified time of the
instance base image. This issue was noticed when using an NFS backend. For
more information see https://bugs.launchpad.net/nova/+bug/1809123