EXT3 and large directories
Matt Dodson
Matt_Dodson at messageone.com
Wed Oct 4 21:33:52 UTC 2006
I have an ext3 filesystem that has several directories and each
directory gets a large number of files inserted and then deleted over
time. The filesystem is basically used as a temp store before files are
processed. The issue is over time the directory scans get extremely slow
even if the directories are empty. I have noticed the directories can
range in size from 4k - 100M even when they are empty. Is there a way
to fix this without recreating the directories or bringing the
filesystem offline?
File system Info:
tune2fs 1.35 (28-Feb-2004)
Filesystem volume name: <none>
Last mounted on: <not available>
Filesystem UUID: 7cbda7aa-e8e7-4da1-9c7c-de45668e98f3
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal resize_inode dir_index filetype
needs_recovery sparse_super large_file
Default mount options: (none)
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 98304000
Block count: 196608000
Reserved block count: 9830400
Free blocks: 31795332
Free inodes: 83024519
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 1024
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 16384
Inode blocks per group: 512
Filesystem created: Thu Aug 10 11:10:59 2006
Last mount time: Tue Oct 3 00:10:48 2006
Last write time: Tue Oct 3 00:10:48 2006
Mount count: 4
Maximum mount count: 21
Last checked: Thu Aug 10 11:10:59 2006
Check interval: 15552000 (6 months)
Next check after: Tue Feb 6 10:10:59 2007
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 128
Journal inode: 8
Default directory hash: tea
Directory Hash Seed: 59fd108a-7ec7-45f9-8967-b9f3aaec3edf
Journal backup: inode blocks
Matt D.
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