On Sun, Jan 22, 2006 at 09:41:11PM -0800, Andrew Morton wrote:
> Alasdair G Kergon <[email protected]> wrote:
> > The snapshot and origin targets are incapable of handling barriers and
> > need to indicate this.
> And what was happening if people _were_ sending such BIOs down? Did it all
> appear to work correctly?
The snapshot target ignores the barrier and in some circumstances I/O can be
reordered in ways that are meant to be prevented by the barrier.
> If so, will this change cause
> currently-apparently-working setups to stop working?
As Lars pointed out, filesystems should already cope with -EOPNOTSUPP
transparently, and it would be sensible for any out-of-tree users to
do likewise.
Alasdair
--
[email protected]
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
