Ext3 users - Nov 2006 - Online filesystem check

Hi all,

a while ago one of my work colleagues attended a seminar with Ted Tso, and
at the time Ted was talking about a way to perform online ext3 filesystem
checks. I can't find any information on it by googling, is it implemented in
current versions of the filesystem utilities? Either way, does anyone know
where I can find more information on it?

-- 
Regards,
Oliver Hookins
Anchor Systems

On Mon Nov 20, 2006 at 10:35:09 +0530, Saswat Praharaj
wrote:
>If you are talking about checking filesystem from the web , then it should
>be straight forward.
>You need to write a simple web server (free C source should be available in
>the net).
>
>On "check file system" event, just invoke e2fsck and return the
status to
>browser.
>You need to write an IPC to communicate between your webserver and e2fsck.
>
>Best,
>-Saswat
Sorry maybe you misunderstand. By "online" I am referring to
"while the ext3
filesystem is mounted r/w".
>
>On 11/16/06, Oliver Hookins <oliver.hookins at anchor.com.au> wrote:
>>
>>Hi all,
>>
>>a while ago one of my work colleagues attended a seminar with Ted Tso,
and
>>at the time Ted was talking about a way to perform online ext3
filesystem
>>checks. I can't find any information on it by googling, is it
implemented
>>in
>>current versions of the filesystem utilities? Either way, does anyone
know
>>where I can find more information on it?
>>
>>--
>>Regards,
>>Oliver Hookins
>>Anchor Systems
>>
>>_______________________________________________
>>Ext3-users mailing list
>>Ext3-users at redhat.com
>>https://www.redhat.com/mailman/listinfo/ext3-users
>>
-- 
Regards,
Oliver Hookins
Anchor Systems

On Thu, 16 Nov 2006, Oliver Hookins wrote:
> checks. I can't find any information on it by googling, is it
implemented in
> current versions of the filesystem utilities?
No, current version of e2fsprogs do not support online fsck. The most 
"online" you can get is trying to remount ro, then fsck the ro device.
> Either way, does anyone know where I can find more information on it?
I'm not aware that this was a planned feature of ext2/3 fs. I've heard 
about the *BSD guys trying to get this done for UFS, but it's not 
implemented there either, AFAIK.

Not being an fs guru, online fsck really sounds difficult and I'm not 
sure if it's worth the battle....

Christian.
-- 
BOFH excuse #72:

Satan did it