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CVS commit: [netbsd-9] src/sys/dev/scsipi

Module Name:    src
Committed By:   martin
Date:           Mon Jul 13 14:09:10 UTC 2020

Modified Files:
        src/sys/dev/scsipi [netbsd-9]: scsiconf.c

Log Message:
Pull up following revision(s) (requested by kim in ticket #1000):

        sys/dev/scsipi/scsiconf.c: revision 1.288

Continue scanning a SCSI bus when a LUN is reported not present

This fixes disk attachment under Qemu when there is no disk on LUN 0 on
a SCSI bus but there is a disk on LUN 1. The inquiry for LUN 0 returns
SID_QUAL_LU_NOTPRESENT & T_NODEVICE.  Quirks are only checked if neither
one of those are set, so cannot use a quirk entry.

Use case 1: Proxmox 6 configures each disk on its own bus when using
the "Virtio SCSI single" SCSI controller. However, while the "scsi0"
disk is on LUN 0, the "scsi1" disk is on LUN 1.

Use case 2: A Linode boot profile with multiple disks results in
the first disk ("sda") on LUN 1, while the second disk ("sdb") is
on LUN 0, each on their own bus.

To generate a diff of this commit:
cvs rdiff -u -r1.284.4.1 -r1.284.4.2 src/sys/dev/scsipi/scsiconf.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

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