Repacking files on ext3?
evilninja at gmx.net
Sat Dec 17 18:43:42 UTC 2005
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Phillip Susi schrieb:
> I am looking for a way to defragment the disk such that the files needed
> for boot are all packed sequentially at the beginning of the disk, so
> that readahead-list can read them in much faster.
i've never used ext2fs defrag-programs so i don't know how "safe" they
are. but if they're working on ext2 - why not tune2fs' an existing ext3
into a ext2, run the defrag program and tune2fs' into ext3 again:
% umount /dev/sdX
% tune2fs -O ^has_journal /dev/sdX
% <run magic defrag program on sdX>
% tune2fs -O has_journal /dev/sdX
% mount /dev/sdX
obviously this has to be done while the device is offline and i'd
recommend having backups of course. i've never tried it though...
BOFH excuse #86:
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