Re: [libvirt] [Qemu-devel] QEMU fstatfs(2) and libvirt SELinux policy
On Fri, Mar 09, 2012 at 06:16:54PM +0100, Paolo Bonzini wrote:
> I'm wondering whether it's worth expanding the SELinux
policy if we
> will have no fstatfs(2) callers in QEMU. Are you planning to drop the
> XFS code?
Chris Wedgwood said that on XFS you want to do discard even if the file
is preallocated, while this is not true on other filesystems. So I
guess the detection code should stay.
In generaly you do not want to discard on a preallocated file, especially
not the low-granularity discard you'd get for example from a Win7 box.