On Fri, Feb 04, 2011 at 01:25:53PM +0100, Jerzy Borkowski wrote: > Hello, > > 1) Fancy a project with quota set to 10GB, and filled > with 5GB of data. When I type > > df /path/to/project/tree > > it shows 5GB free space. Now, the root user > fills up the disk (outside project tree), so the > XFS filesystem is really 100% full. The df command > still shows 5GB free space. I guess, this is > intentional. I propose to add some switch/flag > (either during mount or project creation), > which would tell XFS to report in statfs() calls > the free space as: min(project_free_space, filesystem_free_space). If you just run "df" or "df /path/to/mtpt" rather than asking specifically for the project tree path, you should see the real filesystem usage. Think of project quotas like thin provisioned filesystems - they can still have space available when the underlying storage runs out and it is up to the admin to manage this situation. > 2) is there any way to have space reservations for projects (like in ZFS) ? > For instance, a project with 10GB quota and 7GB of preallocated > space, so even root, writing outside the project tree, cannot > completely fill up the disk. No. Quotas can only be used to limit space usage, not reserve it. It could probably be done, but it's not a simple retrofit... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
