>
> Well, first you have to explain what the MULTI_LUN thing does, because I
> have no idea. However, from XFS's point of view, a device is a device
> is a device - unless it is LVM. There are some differences there in
> terms of how we do disk I/O to the log.
>From kernel help
"If you have a SCSI device that supports more than one LUN (Logical
Unit Number), e.g. a CD jukebox, and only one LUN is detected, you
can say Y here to force the SCSI driver to probe for multiple LUNs.
A SCSI device with multiple LUNs acts logically like multiple SCSI
devices. The vast majority of SCSI devices have only one LUN, and
so most people can say N here and should in fact do so, because it
is safer. "
MULTI_LUN is using to probe multi device on one scsi channel.
>
> I would ask that you try a later kernel, there have been changes in
> all sorts of things since the 1.0.1 release, there is every chance it
> is fixed by some other kernel change. If not, there is probably not a
> lot we can do about it, the disk I/O involved in mount is pretty
> fixed (a binary chop scan of the log blocks looking for the head and
> tail of the log).
I will test it an report it later.
>
> Steve
>
>
>
>
|