Henrique de Moraes Holschuh wrote: > 2. unmount filesystem and run e2fsck -D on it every so often.
Every so often? That phrase roused my interest. Wouldn't exactly once be enough? I think there are two issues under discussion. One is if dir_index has been applied. For that once would be enough. The second issue is reducing the size of the directory. I tried a test using ext4 and e2fsck -D and e2fsck -D did not reduce the size of the directory. Maybe I didn't push the size large enough. for i in $(seq -w 1 10000); do touch $i;done for i in $(seq -w 1 10000); do rm -f $i;done drwxr-xr-x 2 root root 229376 Apr 15 13:52 junk Then unmounted the file system and ran e2fsck -D upon it. # fsck -D /dev/v1/test fsck from util-linux 2.25.2 e2fsck 1.42.12 (29-Aug-2014) /dev/mapper/v1-test: clean, 13/25688 files, 9121/102400 blocks This produced no change in that directory size. It does not appear to me that e2fsck -D compacts existing empty directories. I am not immediately sure how to create a new ext file system without dir_index. Otherwise I would do a quick test to verify that it does actually add dir_index to existing directories. Bob
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