scsi mapping
Phil Schaffner
P.R.Schaffner at IEEE.org
Tue Aug 30 13:40:16 UTC 2005
On Tue, 2005-08-30 at 13:51 +0200, Andreas Sartori wrote:
> hello,
>
>
> i got some problem with scsi disc mapping. i got a sun sdoredge 6320
> (fc) and a fedora core box as nfs server.
> to maximize performance i made 400 gb discs at each disk shelf.
>
> so i got 4 discs with 400gb each.
>
> Host: scsi3 Channel: 00 Id: 00 Lun: 12
> Vendor: SUN Model: T4 Rev: 0301
> Type: Direct-Access ANSI SCSI revision: 03
> Host: scsi3 Channel: 00 Id: 00 Lun: 07
> Vendor: SUN Model: T4 Rev: 0301
> Type: Direct-Access ANSI SCSI revision: 03
> Host: scsi3 Channel: 00 Id: 00 Lun: 09
> Vendor: SUN Model: T4 Rev: 0301
> Type: Direct-Access ANSI SCSI revision: 03
> Host: scsi3 Channel: 00 Id: 00 Lun: 14
> Vendor: SUN Model: T4 Rev: 0301
> Type: Direct-Access ANSI SCSI revision: 03
>
>
> problem is that, lun 11 is on this machine, too and we would like to
> remove this disc from this machine. fedora (redhat) now moves my sdh
> to sdg
>
> and that should not happen.
Why not? That would seem to be the expected behavior. Drive letters
are always assigned in sequence.
> how can i say that 0:0:14 is always sdh?
Don't know, aside from inserting a "dummy" disk in its place. Why not
just mount it at the same mount point in /etc/fstab that it was at
before the change?
Phil
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