Messages in this thread | | | From | Jim Zajkowski <> | Subject | Sparse LUN scanning - 2.4.x | Date | Tue, 11 Jan 2005 14:05:53 -0500 |
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Hi there,
We have an Apple Xserve RAID, connected through a FC switch. The RAID has LUN-masking enabled, such that one of our Linux boxes only gets LUN 1 and not LUN 0. We're running the 2.4.x kernel series now, since this is under a RHEL envinronment.
The problem is this: since LUN 0 does not show up -- specifically, it can't read the vendor or model informaton -- the kernel SCSI scan does not match with the table to tell the kernel to do sparse LUN scanning... so the RAID does not appear.
I can make the RAID show up by injecting a add-single-device to the SCSI proc layer. Trivially patching scsi_scan.c to always do sparse scanning works as well. No hokery with max_scsi_luns or ghost devices works.
I'm considering making a patch to add a kernel option to force sparse scanning. Is there a better way?
Thanks in advance,
--Jim
-- Jim Zajkowski OpenPGP 0x21135C3 http://www.jimz.net/pgp.asc System Administrator 8A9E 1DDF 944D 83C3 AEAB 8F74 8697 A823 2113 5C53 UM Life Sciences Institute
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