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- On Thu, May 14, 2009 at 08:45:38PM -0400, Timo Sirainen wrote:
- >
- > I was rather thinking something that I could run while the system was
- > fully operational. Otherwise just moving the files to a temp directory +
- > rmdir() + rename() would have been fine too.
- >
- > I just tested that xfs, jfs and reiserfs all shrink the directories
- > immediately. Is it more difficult to implement for ext* or has no one
- > else found this to be a problem?
- It's probably fairest to say no one has thought it worth the effort.
- It would require some fancy games to swap out block locations in the
- extent trees (life would be easier with non-extent-using inodes), and
- in the case of htree, we would have to keep track of the index block
- so we could remove it from the htree index. So it's all doable, if a
- bit tricky in terms of the technical details; it's just that the
- people who could do it have been busy enough with other things.
- It's hasn't been considered high priority because most of the time
- directories don't go from holding thousands of files down to a small
- handful.
- - Ted
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