>>>>> "Dirk" == Dirk Steinberg <dws@xxxxxxxxxxxxxxxx> writes:
Dirk> What about kio? I see it's implemented for both SCSI and EIDE.
Dirk> How about MD and LVM?
It's implemented for MD RAID1 (by Marcelo) and I implemented it for MD
RAID0 + LVM.
We decided to pull the kiobuf support from the tree mostly due to all
the controversy about it on linux-kernel. However, we still have the
patches kicking around so we can adapt them to whatever I/O entity
will be agreed upon for 2.5.
Dirk> Should I expect a significant performance penalty for using XFS
Dirk> on top of LVM or MD instead of running it directly on the
Dirk> physical disk partition?
Chances are your CPUs are so fast that the overhead is negligible.
--
Martin K. Petersen, Principal Linux Consultant, Linuxcare, Inc.
mkp@xxxxxxxxxxxxx, http://www.linuxcare.com/
SGI XFS for Linux Developer, http://oss.sgi.com/projects/xfs/
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