Arch Linux

Dinth

Member

From: London

Registered: 2009-03-02

Posts: 238

Ext4 issue

Its propably not a bug, but propably ive broken something when migrating from ext3 to ext4.
Now when my computer will hang up, or power will go off - so computer is off, without shutting it down from system, i lose contents of files which were writen short time before computers crash. But when computer is first run after crash and ext4 filesystem is mounted, it doesn't even try to recover this files from journal.
Any suggestions?

skottish

Forum Fellow

From: Here

Registered: 2006-06-16

Posts: 7,942

Re: Ext4 issue

I have some bad news here: It would seem that the ext4 implementation in kernel 2.6.28 does not crash gracefully at all. When forced to shut down, losing configuration files and other things is normal. I don't know if the situation improves with 2.6.29 at all.

Wintervenom

Member

Registered: 2008-08-20

Posts: 1,011

Re: Ext4 issue

I do have a warning though, and it can be confirmed by others in this forum: ext4 does not crash gracefully right now. If you're on an unstable system, crashing can cause the loss of at least configuration files. My workstation is rock solid, so I've never seen any issues. Another computer that I was working on was having crashes due to an older Intel card with the newer xorg, and configuration files were being killed all over the place.

EDIT:  He beat me to it. 

Last edited by Wintervenom (2009-03-09 17:00:44)

skottish

Forum Fellow

From: Here

Registered: 2006-06-16

Posts: 7,942

Re: Ext4 issue

The fix may already be in the kernel. This bug report @ Ubuntu implies that the patches were applied upstream in the 2.6.28.7 release:

https://bugs.launchpad.net/ubuntu/jaunt … bug/317781