James Arendt 12cb94a75d Fix unmount/remove race in cleanup_build_dir
With a slow file system, umount can return 0 and the immediately
following remove can fail with a "Device or resource busy" error.
This happened in DevStack in disk-image-create where unmount_image
is followed by an immediate cleanup_build_dir.

Solution is to apply same logic from bug 1332521 to allow the
remove to retry on failure (up to 5s) in case the umount has not
completed.

Change-Id: I3337e2b4ad0111e77f79dc179439cdfea8ebdeda
Closes-Bug: #1527721
2015-12-17 20:55:02 -08:00
..
die
2015-09-16 13:54:07 +10:00