Re: XFS related hang (was Re: How to send a break? - dump from frozen 64bit linux)

[Nathan Scott <nathans@xxxxxxx>]

On Thu, Jun 01, 2006 at 11:44:46AM +0200, Jan Engelhardt wrote:
> >> Reinit:
> >>
> >> quotaoff /mntpt
> >> umount /mntpt
> >> mount /mntpt
> >
> >Thanks! :-)
> >
> Too bad XFS does not reinit quota on these commands:
> 
> qutoaoff /mp
> quotaon /mp

Hmm, remount would be saner if we wanted to take that approach...

> Yes, it would lock the filesystem for a moment, but that's better than 
> trying to unmount it under someone having inodes open!

But its not just a moment, a quotacheck needs to scan every inode
in the filesystem (on disk) to correctly account for all space/inode
usage.  Its not something to be encouraging people to do frequently,
and it would also be very difficult to correctly implement (while the
filesystem is actively being modified I mean).

cheers.

-- 
Nathan