defrag ext3

Raccoon1400 · 2008-06-16 02:34:28

Is this possible? if so, how?

Allan · 2008-06-16 02:53:46

Have a look at shake and defrag in the AUR.

droog · 2008-06-16 05:41:15

what could you be doing to need defrag on ext3 i utterly abuse the crap out of several ext3 disks overfilling them weekly etc, and have like .009 fragmentation.

Zepp · 2008-06-16 06:15:45

droog wrote:

what could you be doing to need defrag on ext3 i utterly abuse the crap out of several ext3 disks overfilling them weekly etc, and have like .009 fragmentation.

Meh I have gotten 20-30% non-contiguous

As far as I know there is no real defrag utility for ext3. Most people either choose not to worry about it, or they occasionally backup, format, and recopy all their data.

Last edited by Zepp (2008-06-16 06:18:33)

carlocci · 2008-06-16 13:32:53

There was this simple script by Con Kolivas
http://ck.kolivas.org/apps/defrag/defrag-0.06/defrag

Raccoon1400 · 2008-06-16 14:57:54

droog wrote:

what could you be doing to need defrag on ext3 i utterly abuse the crap out of several ext3 disks overfilling them weekly etc, and have like .009 fragmentation.

how do you calcutate the % fragmentation?

Allan · 2008-06-16 15:00:41

One way is if you do "touch /forcefsck" as root, your filesystems will be checked on you next boot and that info gets outputted.

Zepp · 2008-06-16 15:36:19

Raccoon1400 wrote:

droog wrote:
what could you be doing to need defrag on ext3 i utterly abuse the crap out of several ext3 disks overfilling them weekly etc, and have like .009 fragmentation.
how do you calcutate the % fragmentation?

fsck can tell you.

Raccoon1400 · 2008-06-16 15:39:32

Zepp wrote:

Raccoon1400 wrote:
droog wrote:
what could you be doing to need defrag on ext3 i utterly abuse the crap out of several ext3 disks overfilling them weekly etc, and have like .009 fragmentation.
how do you calcutate the % fragmentation?
fsck can tell you.

What command?

Zepp · 2008-06-16 15:58:00

Raccoon1400 wrote:

Zepp wrote:
Raccoon1400 wrote:
how do you calcutate the % fragmentation?
fsck can tell you.
What command?

fsck

moljac024 · 2008-06-16 16:04:03

Zepp wrote:

Raccoon1400 wrote:
Zepp wrote:
fsck can tell you.
What command?
fsck

Or fsck

Raccoon1400 · 2008-06-16 16:20:31

The touch /forcefsck command would be better then, because fsck should not be run on a mounted filesysyem.

Zepp · 2008-06-16 17:06:47

Raccoon1400 wrote:

The touch /forcefsck command would be better then, because fsck should not be run on a mounted filesysyem.

Right. It's not a problem if the partition in question isn't your current root partition, otherwise you need to do that to force fsck before root is mounted at boot.

damn_it's_charles · 2008-06-17 01:51:33

If you're getting that bad fragmentation you might want to take a look at XFS, which can defragment itself, and tries rather hard to avoid fragmentation in the first place (check out the preallocation options) but it comes with a health warning: it delays disk writes more than other file systems and thus makes your data more vulnerable to, well, everything. It comes highly recommended by the mythtv crowd, and certain species of ricer. YMMV and I've not tried it on arch yet.

Arch Linux

#1 2008-06-16 02:34:28

defrag ext3

#2 2008-06-16 02:53:46

Re: defrag ext3

#3 2008-06-16 05:41:15

Re: defrag ext3

#4 2008-06-16 06:15:45

Re: defrag ext3

#5 2008-06-16 13:32:53

Re: defrag ext3

#6 2008-06-16 14:57:54

Re: defrag ext3

#7 2008-06-16 15:00:41

Re: defrag ext3

#8 2008-06-16 15:36:19

Re: defrag ext3

#9 2008-06-16 15:39:32

Re: defrag ext3

#10 2008-06-16 15:58:00

Re: defrag ext3

#11 2008-06-16 16:04:03

Re: defrag ext3

#12 2008-06-16 16:20:31

Re: defrag ext3

#13 2008-06-16 17:06:47

Re: defrag ext3

#14 2008-06-17 01:51:33

Re: defrag ext3

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