Re: [Lsf-pc] [LSF/MM TOPIC] Online filesystem check framework

[Jan Kara <jack@suse.cz>]

Hello,

On Thu 21-01-16 22:45:29, Goldwyn Rodrigues wrote:
> Topic: Generic Online filesystem Check framework
> 
> Motivation:
>  + Better uptime - Filesystems turn read-only at the first error encountered
> and it may block critical applications which have not encountered the error.
>  + Unmountable Filesystems - Some filesystems such as clustered filesystem
> may not be unmountable because they are used by too many computers to be
> taken offline.
>  + Autofix - may sound dangerous as fixing is without user intervention, but
> an option may help admins which are looking for a good uptime.
>  + Logic inbuilt - most logic of access to filesystem is already in the
> filesystem driver. The fix/check would make use of existing functionality.
> 
> Framework would be around providing a generic interface framework which
> would use inode numbers as the basic unit to check or fix. Other metadata
> may need special parameters. Userspace scripts will issue check/fixes to the
> system, which may/may not be driven by

Well, this is a very difficult topic so I think we need some concrete
proposal and ideally some RFC code about what you think needs to be done to
make online fsck possible. Without that it will be just a useless
handwaving since I don't think anybody is able to come up with a decent
proposal during that half an hour session...
								Honza
-- 
Jan Kara <jack@suse.com>
SUSE Labs, CR