When a db is reclaimed it removes the hash dir the db files are in,
but it does not try to remove the parent suffix dir though it might
be empty now. This eventually leads to a bunch of empty suffix dirs
lying around. This patch fixes that by attempting to remove the
parent suffix dir after a hash dir reclamation.
Here's a quick script to see how bad a given drive might be:
import os, os.path, sys
if len(sys.argv) != 2:
 sys.exit('%s <mount-point>' % sys.argv[0])
in_use = 0
empty = 0
containers = os.path.join(sys.argv[1], 'containers')
for p in os.listdir(containers):
 partition = os.path.join(containers, p)
 for s in os.listdir(partition):
 suffix = os.path.join(partition, s)
 if os.listdir(suffix):
 in_use += 1
 else:
 empty += 1
print in_use, 'in use,', empty, 'empty,', '%.02f%%' % (
 100.0 * empty / (in_use + empty)), 'empty'
And here's a quick script to clean up a drive:
NOTE THAT I HAVEN'T ACTUALLY RUN THIS ON A LIVE NODE YET!
import errno, os, os.path, sys
if len(sys.argv) != 2:
 sys.exit('%s <mount-point>' % sys.argv[0])
containers = os.path.join(sys.argv[1], 'containers')
for p in os.listdir(containers):
 partition = os.path.join(containers, p)
 for s in os.listdir(partition):
 suffix = os.path.join(partition, s)
 try:
 os.rmdir(suffix)
 except OSError, err:
 if err.errno not in (errno.ENOENT, errno.ENOTEMPTY):
 print err
Change-Id: I2e6463a4cd40597fc236ebe3e73b4b31347f2309