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scsi od drive woes

2007-12-24 21:37:00

I am trying to configure an Ultra 1 running Solaris 8 10/01 to see an old
scsi optical drive.
The hardware sees the device as a MaxoptixT4:

ok probe-scsi-all
/sbus at 1f,0/espdma at e,8400000/esp at e,8800000
Target 0
Unit 0 Disk IBM DCAS532160SUN2.1GS65A
Target 4
Unit 0 Removable Device type 7 MaxoptixT4-2600 B178

If i boot with the -r flag no new devices are added to /dev or /devices:

[chrisw at sinope ~]0% ls /devices/sbus at 1f,0/espdma at e,8400000/esp at e,8800000
/devices/sbus at 1f,0/espdma at e,8400000/esp at e,8800000:
sd at 0,0:a# sd at 0,0:b# sd at 0,0:c# sd at 0,0:d# sd at 0,0:e# sd at 0,0:f#
sd at 0,0:g# sd at 0,0:h#
sd at 0,0:a,raw% sd at 0,0:b,raw% sd at 0,0:c,raw% sd at 0,0:d,raw% sd at 0,0:e,raw%
sd at 0,0:f,raw% sd at 0,0:g,raw% sd at 0,0:h,raw%
[chrisw at sinope ~]0%

I have tried to make the appropriate special files:

[chrisw at sinope esp at e,8800000]0% sudo mknod sd at 4,0:a b 32 32
[chrisw at sinope esp at e,8800000]0% sudo mknod sd at 4,0:a,raw c 32 32
etc

[chrisw at sinope dsk]0% sudo ln -s
..http://devices/sbus at 1f,0/espdma at e,8400000/esp at e,8800000/sd at 4,0:a c0t4d0s0
[chrisw at sinope rdsk]0% sudo ln -s
..http://devices/sbus at 1f,0/espdma at e,8400000/esp at e,8800000/sd at 4,0:a,raw c0t4d0s0
etc

When i attempt to run the format command I get a No disks found! error:
[chrisw at sinope rdsk]0% sudo format -e c0t4d0s0
No disks found!

[chrisw at sinope rdsk]1% sudo format -e /dev/rdsk/c0t4d0s0
No disks found!

If I try to mount the drive:
[chrisw at sinope ~]0% sudo mount /dev/dsk/c0t4d0s0 /mnt
mount: /dev/dsk/c0t4d0s0 no such device
[chrisw at sinope ~]32%

At this point the light on the optical drive flashes very briefly.

If I replace the old optical drive with a new version (with the same target)
and run the devfsadm the appropriate entries are added to /dev and /devices.
I can then format/mount the original test disk. If I then hotswap the old
drive back I can use the /dev and /devices entries to format/mount the
drive.
If I reboot the sun it will no longer be able to see the old optical drive,
although the entries in /dev and /devices remain (until I run devfsadm -Cv).

Any suggestions would be appreciated.

Chris

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