[dm-devel] EMC Clariion ghost devices
Joel Becker
Joel.Becker at oracle.com
Mon Aug 1 05:50:39 UTC 2005
On Mon, Aug 01, 2005 at 12:01:54AM +0200, Lars Marowsky-Bree wrote:
> That should not happen(tm). Where does it hang according to sysrq-t?
Not in front of it right now, I'll let you know when I find out
:-)
>
> (kpartx supposedly is run against the dm-multipath table and not against
> sdap, so it should already benefit from the multipath protection...)
This kpartx is run against dm-16 (on the particular boot I
remember), which was the dm on top of the ghost device.
> "sg_inq -P /dev/sdap" might also be worth a try, what does it report for
> the various paths?
Again, have to check tomorrow.
> Is that a LUN 0 backed by actual storage or a LUN_Z?
I don't quite know what you mean by LUN_Z. My EMC guy says it
is a "ghost" projected because the second SP owns no disks, but SCSI
requires a LUN 0 to be scannable.
Joel
--
"A narcissist is someone better looking than you are."
- Gore Vidal
Joel Becker
Senior Member of Technical Staff
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127
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