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Ciro Iriarte

9 Dec 2007 9 Dec '07

12:41

Hi, once 10.2 was released I installed it on my laptop using ext3 instead of reiserfs to avoid support issues. Now comes the issue, my home filesystem has 56GB of which i used 53GB, BUT the free space states 41MB. So, where are the other 3GB?. Already tried with a du -hs /home/ and i still get 53GB of usage. Tried also to unmount and run fsck, but apparently all is good. Any thoughts? Ciro -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

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Anders Johansson

9 Dec 9 Dec

12:54

On Sunday 09 December 2007 13:41:34 Ciro Iriarte wrote:

Hi, once 10.2 was released I installed it on my laptop using ext3 instead of reiserfs to avoid support issues. Now comes the issue, my home filesystem has 56GB of which i used 53GB, BUT the free space states 41MB. So, where are the other 3GB?.

Already tried with a du -hs /home/ and i still get 53GB of usage. Tried also to unmount and run fsck, but apparently all is good.

Any thoughts?

A file system is divided into blocks. When you create a 1 byte file, you will use up one entire block. Essentially you lose the remaining bits (unless you have a file system that can put multiple files into one block, like reiserfs) In ext3, the default block size is 4k, so when you create a one byte file, you lose 4095 bytes, My guess is that this is what has happened to your 3GB. If you have a high number of files that don't fill up their blocks, say 3 million files that each lose 1k each, that's 3GB gone Anders -- Madness takes its toll -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

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Anders Johansson

12:59

On Sunday 09 December 2007 13:41:34 Ciro Iriarte wrote:

Hi, once 10.2 was released I installed it on my laptop using ext3 instead of reiserfs to avoid support issues. Now comes the issue, my home filesystem has 56GB of which i used 53GB, BUT the free space states 41MB. So, where are the other 3GB?.

Already tried with a du -hs /home/ and i still get 53GB of usage. Tried also to unmount and run fsck, but apparently all is good.

Any thoughts?

One more thing that I forgot: in ext3, a certain percentage is reserved for administrative use. By default this is 5%, and that is 2.8GB out of 56, which would account for a lot of the difference. Anders -- Madness takes its toll -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

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Ciro Iriarte

13:24

2007/12/9, Anders Johansson :

On Sunday 09 December 2007 13:41:34 Ciro Iriarte wrote:

...
Hi, once 10.2 was released I installed it on my laptop using ext3 instead of reiserfs to avoid support issues. Now comes the issue, my home filesystem has 56GB of which i used 53GB, BUT the free space states 41MB. So, where are the other 3GB?.

Already tried with a du -hs /home/ and i still get 53GB of usage. Tried also to unmount and run fsck, but apparently all is good.

Any thoughts?

One more thing that I forgot: in ext3, a certain percentage is reserved for administrative use. By default this is 5%, and that is 2.8GB out of 56, which would account for a lot of the difference.

Anders

Totally forgot about it!, too much time with reiserfs and zfs :p Thanks a lot Ciro -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

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Jan Ritzerfeld

13:05

Am Sonntag, 9. Dezember 2007 schrieb Ciro Iriarte:

Hi, once 10.2 was released I installed it on my laptop using ext3 instead of reiserfs to avoid support issues. Now comes the issue, my home filesystem has 56GB of which i used 53GB, BUT the free space states 41MB. So, where are the other 3GB?. [...]

Ext3 reserves 5% of the available disk space for root. Thereby, it is ensured that root can log in even if a user "filled" the whole disk. However, this does not make sense on your seperate home partition since root does not use it as its home: http://wiki.archlinux.org/index.php/Ext3_Filesystem_Tips#Reclaim_Reserved_Fi... Nonetheless, fillung up a partition above ~85% is considered harmful to performance due to fragmentation! HTH Jan -- Once you open a can of worms, the only way to re-can them is to use a bigger can. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

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Ciro Iriarte

13:26

2007/12/9, Jan Ritzerfeld :

Am Sonntag, 9. Dezember 2007 schrieb Ciro Iriarte:

...
Hi, once 10.2 was released I installed it on my laptop using ext3 instead of reiserfs to avoid support issues. Now comes the issue, my home filesystem has 56GB of which i used 53GB, BUT the free space states 41MB. So, where are the other 3GB?. [...]

Ext3 reserves 5% of the available disk space for root. Thereby, it is ensured that root can log in even if a user "filled" the whole disk. However, this does not make sense on your seperate home partition since root does not use it as its home: http://wiki.archlinux.org/index.php/Ext3_Filesystem_Tips#Reclaim_Reserved_Fi...

Thanks, already fixed it.

Nonetheless, fillung up a partition above ~85% is considered harmful to performance due to fragmentation!

Well, it's my laptop (not high end server) and would like to use every GB I paid for :p

HTH Jan

Ciro -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

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Aaron Kulkis

10 Dec 10 Dec

22:05

Ciro Iriarte wrote:

2007/12/9, Jan Ritzerfeld :

...
Am Sonntag, 9. Dezember 2007 schrieb Ciro Iriarte:

...
Hi, once 10.2 was released I installed it on my laptop using ext3 instead of reiserfs to avoid support issues. Now comes the issue, my home filesystem has 56GB of which i used 53GB, BUT the free space states 41MB. So, where are the other 3GB?. [...] Ext3 reserves 5% of the available disk space for root. Thereby, it is ensured that root can log in even if a user "filled" the whole disk. However, this does not make sense on your seperate home partition since root does not use it as its home: http://wiki.archlinux.org/index.php/Ext3_Filesystem_Tips#Reclaim_Reserved_Fi...

Thanks, already fixed it.

...
Nonetheless, fillung up a partition above ~85% is considered harmful to performance due to fragmentation!

Well, it's my laptop (not high end server) and would like to use every GB I paid for :p

They are being used...to keep your files defragged in real time. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

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Joe Sloan

9 Dec 9 Dec

22:57

Ciro Iriarte wrote:

Hi, once 10.2 was released I installed it on my laptop using ext3 instead of reiserfs to avoid support issues.

That's odd, I must have missed the part where suse said they won't support reiserfs any more. I'm running all my 10.3 installs on reiser with no problems. The suse enterprise 10 servers I installed a couple weeks ago defaulted to reiser too, come to think of it. Could you explain what your support concerns were? Sorry, I don't have an answer on the ext3 woes, as I don't use ext3. No doubt others here can speak directly to the issue. Joe -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

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Carlos E. R.

10 Dec 10 Dec

00:01

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The Sunday 2007-12-09 at 14:57 -0800, Joe Sloan wrote:

Ciro Iriarte wrote:

...
Hi, once 10.2 was released I installed it on my laptop using ext3 instead of reiserfs to avoid support issues.

That's odd, I must have missed the part where suse said they won't support reiserfs any more. I'm running all my 10.3 installs on reiser with no problems.

There was a controversy about this long ago. The only verifiable thing is that suse said that reiserfs was not going to be their default filesystem in the future; they never said it was not going to be supported. The original email when this was discussed was this: http://lists.opensuse.org/opensuse-factory/2006-09/msg00542.html ] Date: Thu, 14 Sep 2006 06:15:26 -0400 ] From: Jeff Mahoney ] Subject: [opensuse-factory] Proposal: Change in default fs for releases >= 10.2 - -- Cheers, Carlos E. R. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4-svn0 (GNU/Linux) iD8DBQFHXIHMtTMYHG2NR9URAndFAKCF725pfRJcn3t/irNBdDcXE+slHwCfZ9ro 8MS3G8FFKX1WmojhWr+FLLw= =g+zL -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

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Ciro Iriarte

00:18

2007/12/9, Joe Sloan :

Ciro Iriarte wrote:

...
Hi, once 10.2 was released I installed it on my laptop using ext3 instead of reiserfs to avoid support issues.

That's odd, I must have missed the part where suse said they won't support reiserfs any more. I'm running all my 10.3 installs on reiser with no problems.

The suse enterprise 10 servers I installed a couple weeks ago defaulted to reiser too, come to think of it.

Could you explain what your support concerns were? Sorry, I don't have an answer on the ext3 woes, as I don't use ext3. No doubt others here can speak directly to the issue.

Joe

-- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

I love reiserfs (when not used with big files), all the SLES servers that i manage still use it. I was talking about long term support issues as i'm not sure when i'll reinstall my laptop. Ciro -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

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Philipp Thomas

10:07

On Sun, 9 Dec 2007 09:41:34 -0300, Ciro Iriarte wrote:

Hi, once 10.2 was released I installed it on my laptop using ext3 instead of reiserfs to avoid support issues.

We will support reiserfs, it's just not the default anymore. Philipp -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org

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10 comments

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participants (7)

Aaron Kulkis
Anders Johansson
Carlos E. R.
Ciro Iriarte
Jan Ritzerfeld
Joe Sloan
Philipp Thomas