[Bug 246279] ciss device driver not allowing more than 48 drives to be detected by the CAM layer

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246279

--- Comment #26 from Peter Eriksson <pen@lysator.liu.se> ---
On the third attempt I just let it keep trying, no "sesutil show". And then it
eventually printed:

....
(da116:ciss2:32:56:0): SCSI status: Check Condition
(da116:ciss2:32:56:0): SCSI sense: ILLEGAL REQUEST asc:25,0 (Logical unit not
supported)
(da116:ciss2:32:56:0): Error 6, Unretryable error
da116 at ciss2 bus 32 scbus7 target 56 lun 0
da116: <HP MB012000JWDFD HPD2>  s/n 5PGTSWYC detached
May  8 22:19:40 balur03 ZFS[22519]: vdev probe failure, zpool=$FILUR02
path=$/dev/diskid/DISK-5PGTSWYC
(da116:ciss2:32:56:0): Periph destroyed
(da123:ciss2:32:63:0): WRITE(16). CDB: 8a 00 00 00 00 03 1b 00 39 58 00 00 01
00 00 00 
(da123:ciss2:32:63:0): CAM status: CCB request completed with an error
(da123:ciss2:32:63:0): Retrying command, 3 more tries remain
(da123:ciss2:32:63:0): WRITE(16). CDB: 8a 00 00 00 00 03 1b 00 38 58 00 00 01
00 00 00 
(da123:ciss2:32:63:0): CAM status: CCB request completed with an error
(da123:ciss2:32:63:0): Retrying command, 3 more tries remain
(da123:ciss2:32:63:0): WRITE(16). CDB: 8a 00 00 00 00 03 1b 00 37 58 00 00 01
00 00 00 
(da123:ciss2:32:63:0): CAM status: CCB request completed with an error
(da123:ciss2:32:63:0): Retrying command, 3 more tries remain
(da123:ciss2:32:63:0): WRITE(16). CDB: 8a 00 00 00 00 03 1b 00 39 58 00 00 01
00 00 00 
(da123:ciss2:32:63:0): CAM status: SCSI Status Error
(da123:ciss2:32:63:0): SCSI status: Check Condition
(da123:ciss2:32:63:0): SCSI sense: ILLEGAL REQUEST asc:25,0 (Logical unit not
supported)
(da123:ciss2:32:63:0): Command Specific Info: 0x2060000
(da123:ciss2:32:63:0): Error 6, Unretryable error
(da123:ciss2:32:63:0): Invalidating pack
(da123:ciss2:32:63:0): WRITE(16). CDB: 8a 00 00 00 00 03 1b 00 38 58 00 00 01
00 00 00 
(da123:ciss2:32:63:0): CAM status: SCSI Status Error
(da123:ciss2:32:63:0): SCSI status: Check Condition
(da123:ciss2:32:63:0): SCSI sense: ILLEGAL REQUEST asc:25,0 (Logical unit not
supported)
(da123:ciss2:32:63:0): Command Specific Info: 0x2060000
(da123:ciss2:32:63:0): Error 6, Unretryable error
(da123:ciss2:32:63:0): WRITE(16). CDB: 8a 00 00 00 00 03 1b 00 37 58 00 00 01
00 00 00 
(da123:ciss2:32:63:0): CAM status: SCSI Status Error
(da123:ciss2:32:63:0): SCSI status: Check Condition
(da123:ciss2:32:63:0): SCSI sense: ILLEGAL REQUEST asc:25,0 (Logical unit not
supported)
(da123:ciss2:32:63:0): Command Specific Info: 0x2060000
(da123:ciss2:32:63:0): Error 6, Unretryable error
da123 at ciss2 bus 32 scbus7 target 63 lun 0
da123: <HP MB012000JWDFD HPD2>  s/n 5PGU79TE detached
May  8 22:26:52 balur03 ZFS[38178]: vdev probe failure, zpool=$FILUR07
path=$/dev/diskid/DISK-5PGU79TE
(da123:ciss2:32:63:0): Periph destroyed

And then zfs started mounting the filesystems.

root@balur03# df -h | wc -l
  169281

It'll be interesting to see if it survives :-)


The fact that the "sesutil" command seemed to trigger a panic might indicate a
problem somewhere though, but I'm not sure it's in the ciss driver.

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