Re: Ideas to do custom operation just after mount?

Dave Chinner
2015-12-21T00:17:11Z

On Thu, Dec 17, 2015 at 09:55:14AM +0800, Qu Wenruo wrote:
> Hi,
>
> Will xfstests provides some API to do some operation just after
> mounting a filesystem?
>
> Some filesystem(OK, btrfs again) has some function(now qgroup only)
> which needed to be enabled by ioctl instead of mount option.

Irk.

Seriously, I need ot find some time to split all the fs specific
stuff in common/rc into separate files and have each different
filesystem implement it's own version of the relevant functions
like _scratch_mkfs, _scratch_mount, etc.

That will enable btrfs to do truly hideous stuff like this that
admins will hate you for requiring, and the rest of us won't have to
care about it.

> So is there any good idea to do some operation just after mounting
> in xfstests?

You're just going to have to wait a bit - the first piece of this
is in the overlayfs support patches, and the rest of it is in my
local work area in an incomplete state.

Cheers,

Dave.
--
Dave Chinner
david@fromorbit.com