Comments on: Ext4 defragmentation with e4defrag http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/ All About GNU/Linux and BSD - reviews, comparisons, articles Sat, 22 Nov 2008 08:47:20 +0000 http://wordpress.org/?v=2.6.3 By: PolishJoke http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121944 PolishJoke Wed, 02 Jul 2008 02:46:44 +0000 http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121944 You people are so very very high. Don't even know where to start. RAID arrays die twice over before linux filesystems fragment. Desktops? User space? WTF are you people smoking. You people are so very very high. Don’t even know where to start. RAID arrays die twice over before linux filesystems fragment. Desktops? User space? WTF are you people smoking.

]]> By: EdwardOCallaghan http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121718 EdwardOCallaghan Tue, 10 Jun 2008 13:56:37 +0000 http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121718 Errrm .. ZFS .. OpenSolaris, OSX and FreeBSD Kernels have it.. Kernel land ZFS in Linux, get with the times Linus.. Give a crack; www.opensolaris.com Regards. Errrm ..

ZFS .. OpenSolaris, OSX and FreeBSD Kernels have it..
Kernel land ZFS in Linux, get with the times Linus..

Give a crack;
http://www.opensolaris.com

Regards.

]]> By: scorp123 http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121629 scorp123 Tue, 03 Jun 2008 21:05:32 +0000 http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121629 LOL, more unqualified nonsense .... LOL, more unqualified nonsense ….

]]> By: Ben http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121623 Ben Tue, 03 Jun 2008 12:17:27 +0000 http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121623 Nice article; thanks. Regardless of whether the file systems fragment, at least you talk about it, and from what I can see everywhere, ext4 really is very good with not having much fragmentation. Nice article; thanks.
Regardless of whether the file systems fragment, at least you talk about it, and from what I can see everywhere, ext4 really is very good with not having much fragmentation.

]]> By: ok http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121597 ok Sun, 01 Jun 2008 18:23:52 +0000 http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121597 I will give you good advice - _never_ talk about Linux file systems fragmentation (unless you want to be burned at the stake). I will give you good advice - _never_ talk about Linux file systems fragmentation (unless you want to be burned at the stake).

]]> By: Giordano http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121596 Giordano Sun, 01 Jun 2008 17:49:17 +0000 http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121596 There's a spurious "in fact" in the beginning of my previous comment :$ There’s a spurious “in fact” in the beginning of my previous comment :$

]]> By: Giordano http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121595 Giordano Sun, 01 Jun 2008 17:48:04 +0000 http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121595 In fact, if you have a look at <a href="https://ols2006.108.redhat.com/2007/Reprints/sato-Reprint.pdf" rel="nofollow">the paper</a> linked in the wikipedia ext4 article you can read these lines at the end: <blockquote> To reduce system administrator’s effort, it is nec- essary to automate defragmentation. This can be realized by the following procedure. 1. The kernel notifies the occurrence of frag- ments to user space. 2. The user space daemon catches the notifica- tion and executes the defragmentation com- mand. </blockquote> This could really be a cool feature to have ^_^. The effort required to the user to maintain an efficient system under the fs aspect would be basically cut down to 0 :) In fact, if you have a look at the paper linked in the wikipedia ext4 article you can read these lines at the end:

To reduce system administrator’s effort, it is nec-
essary to automate defragmentation. This can be
realized by the following procedure.
1. The kernel notifies the occurrence of frag-
ments to user space.
2. The user space daemon catches the notifica-
tion and executes the defragmentation com-
mand.

This could really be a cool feature to have ^_^.
The effort required to the user to maintain an efficient system under the fs aspect would be basically cut down to 0 :)

]]> By: Aaron http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121590 Aaron Sun, 01 Jun 2008 07:49:46 +0000 http://polishlinux.org/apps/cli/ext4-defragmentation-with-e4defrag/#comment-121590 As mentioned in my previous comment in your previous thread, fsck is only reporting inode fragmentation, *NOT* block fragmentation. Also, e4defrag is designed specifically for this use. Taking a look at one of the key features of ext4- extents, you will have an exceptionally difficult time fragmenting the inodes on this filesystem. As mentioned in my previous comment in your previous thread, fsck is only reporting inode fragmentation, *NOT* block fragmentation. Also, e4defrag is designed specifically for this use. Taking a look at one of the key features of ext4- extents, you will have an exceptionally difficult time fragmenting the inodes on this filesystem.

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