Comment 29 for bug 321528
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| maxadamo (massimilianoadamo) wrote Re: Include ext4 defrag / defragment tool | #29 |
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@bmhm: I am not pretty sure if you're right.
First, I would state that this linux is not a kind of thing where everything is magic, and so fa and so on, and file self-manage fragmentation and filesystem never fragment.
Veritas and XFS, have a defrag tool from a long time.
As far fragmentation is concerned, if I am not wrong, all journaling filesystems have fragmentation issues. And Linux is not different.
What you're saying (again: if I am not wrong) was true for paging filesystems, where each file had an offset to the end. Furthermore, a paging filesystem almost full, was fragmenting as well (because all offset were going to be filled).
I suspect the structure of modern filesystems is completely different and we have fragmentation issue.
I recently migrated from XFS to ext4 and the FS is pretty good.
What I am missing is:
1. such tool to defragment FS
2. xfsdump, which was a very good tool for backups.