** Also affects: python-glanceclient
Importance: Undecided
Status: New
** Changed in: python-glanceclient
Status: New => Fix Committed
** Changed in: python-glanceclient
Importance: Undecided => Medium
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Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1461678
Title:
nova error handling causes glance to keep unlinked files open, wasting
space
Status in OpenStack Compute (nova):
Fix Committed
Status in python-glanceclient:
Fix Committed
Bug description:
When creating larger glance images (like a 10GB CentOS7 image), if we
run into situation where we run out of room on the destination device,
we cannot recover the space from glance. glance-api will have open
unlinked files, so a TONNE of space is unavailable until we restart
glance-api.
Nova will try to reschedule the instance 3 times, so should see this
nova-conductor.log :
u'RescheduledException: Build of instance
98ca2c0d-44b2-48a6-b1af-55f4b2db73c1 was re-scheduled: [Errno 28] No space left
on device\n']
The problem is this code in
nova.image.glance.GlanceImageService.download():
if data is None:
return image_chunks
else:
try:
for chunk in image_chunks:
data.write(chunk)
finally:
if close_file:
data.close()
image_chunks is an iterator. If we take an exception (like we can't
write the file because the filesystem is full) then we will stop
iterating over the chunks. If we don't iterate over all the chunks
then glance will keep the file open.
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