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Mroofka
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Joined: 25 Jan 2005
Posts: 369
Location: Poland
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 Posted: Mon Feb 28, 2005 11:22 am Post subject: How to fix unconfinous files on ext3 |
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I have problem with uncontinous files on one of my disks. I have about 15% uncontinous files and it still raising. The fsck ony shows that somethint is not wright but it doesn't fix it. I don't know what to do. Witch program should I use to fix it on ext3. Which programs should I use on ext3 and reiserfs to finding ane fixing diferent filesystem problems?
Thanks in Adwance.
Pozdrawiam
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Last edited by Mroofka on Mon Feb 28, 2005 2:27 pm; edited 2 times in total |
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_never_
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Joined: 10 Jun 2004
Posts: 285
Location: BW, Germany
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| Posted: Mon Feb 28, 2005 11:35 am Post subject: |
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First you need to unmount the filesystem to check (or mount it read-only - but I would unmount it completely). If it's your root filesystem, do this from some bootable Linux CD like the Gentoo LiveCD.
Then for ext2/3, do the following:
If this doesn't work, try:
If it's ReiserFS, do this:
| Code: | | reiserfsck --fix-fixable DEVICE |
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Mroofka
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| Posted: Mon Feb 28, 2005 2:27 pm Post subject: |
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Thakns _never_
by accident I've found the e2defreag on knoppix when I was checking may / partition  ... This program solved my problem now I have 0% fragmentation ... I regret that in not in the portage tree I will heve to compile It my self. I still wonder how to check the framentation on reiserfs because the reiserfsck doesn't say enything about it.
Pozdrawiam
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mnxAlpha
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Joined: 15 Sep 2004
Posts: 210
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| Posted: Tue Mar 01, 2005 9:38 am Post subject: |
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| I think you might have the wrong idea here. Unlike certain other operating systems with broken file systems, most Linux filesystems do not require defragmentation. Ever. As long as you keep the disc less than 75% full, your filesystem will not suffer from excessive file fragmentation, and thus performance will not decrease. If your disk becomes filled past that mark, performance will suffer. That's true on ext3, and doubly true on more modern filesystems like ReiserFS, Reiser4, JFS, XFS... |
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Cintra
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Joined: 03 Apr 2004
Posts: 2111
Location: Norway
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| Posted: Tue Mar 01, 2005 10:15 am Post subject: |
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| Mroofka wrote: | Thakns _never_
by accident I've found the e2defrag on knoppix when I was checking may / partition ... This program solved my problem now I have 0% fragmentation ... I regret that in not in the portage tree I will heve to compile It my self. I still wonder how to check the framentation on reiserfs because the reiserfsck doesn't say enything about it.
Pozdrawiam |
A word of warning... http://lists.debian.org/debian-laptop/2004/05/msg00315.html
mvh
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_never_
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Location: BW, Germany
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| Posted: Tue Mar 01, 2005 1:34 pm Post subject: |
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| Mroofka wrote: | | by accident I've found the e2defreag on knoppix when I was checking may / partition :)... This program solved my problem now I have 0% fragmentation :)... I regret that in not in the portage tree I will heve to compile It my self. I still wonder how to check the framentation on reiserfs because the reiserfsck doesn't say enything about it. |
The reason why this is not in the Portage tree is most certainly that nobody needs it. What mnxAlpha is absolutely right. I have ReiserFS and have only 3 GB of 56 GB free. I don't know how much fragmented my filesystem is as I don't know of any way to check this, but it is like two years old now. Never got slower in that time.
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Mroofka
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| Posted: Wed Mar 02, 2005 11:29 am Post subject: |
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thanks I know the answer I was cosed by full disk I have small disk and sometimes I forgot to copy data to another partition. Few times I have whole disk used by data
Pozdrawiam
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NotCourse6
Tux's lil' helper
Joined: 09 Oct 2004
Posts: 79
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| Posted: Thu Jul 28, 2005 1:21 pm Post subject: |
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mnxAlpha, you say that JFS is included in the set of filesystems that automatically defrag themselves. My issue is that I need to add another partition to my hard drive (at the end, of course) and I want to force a defrag so that I can be certain that all my files are safe and kosher. What command can I use to do this? Also, here's my partitioning scheme:
Device Boot Start End Blocks Id System
/dev/hda1 * 1 3468 26218048+ 7 HPFS/NTFS
/dev/hda2 * 3469 3473 37800 83 Linux
/dev/hda3 3474 3540 506520 83 Linux
/dev/hda4 3541 5168 12307680 83 Linux
So can I simply shorten /dev/hda4 from the "End" side to free up another 1GB for /dev/hda5? Ooo, I think all these guys are primary partitions as well. I'll have to stick an extended one in there. |
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