Problems with Dell PV132T tape changer

[Åge Røbekk]

This changer has two separate changer devices, /dev/ch0 and /dev/ch1. 
When moving a tape from e.g. slot 0 to drive 0 on /dev/ch0, everything 
works as it is supposed to.  However, trying the same operation on 
/dev/ch1 fails as follows:

# chio -f /dev/ch0 move slot 0 drive 0
chio: /dev/ch0: CHIOMOVE: Input/output error

dmesg:

[...]
(ch1:ahc0:0:5:1): MOVE MEDIUM. CDB: a5 20 0 1 20 6 2 0 0 0 0 0
(ch1:ahc0:0:5:1): CAM Status: SCSI Status Error
(ch1:ahc0:0:5:1): SCSI Status: Check Condition
(ch1:ahc0:0:5:1): ILLEGAL REQUEST asc:3b,a0
(ch1:ahc0:0:5:1): Vendor Specific ASCQ
(ch1:ahc0:0:5:1): Unretryable error


# chio -f /dev/ch1 status
picker 0:
slot 0: <ACCESS,FULL>
slot 1: <ACCESS,FULL>
slot 2: <ACCESS,FULL>
slot 3: <ACCESS,FULL>
slot 4: <ACCESS,FULL>
slot 5: <ACCESS,FULL>
slot 6: <ACCESS,FULL>
slot 7: <ACCESS,FULL>
slot 8: <ACCESS,FULL>
slot 9: <ACCESS,FULL>
slot 10: <ACCESS,FULL>
slot 11: <ACCESS,FULL>
slot 12: <ACCESS,FULL>
slot 13: <ACCESS,FULL>
portal 0: <INEAB,EXENAB,ACCESS,IMPEXP>
drive 0: <ACCESS>

# camcontrol devlist -v
scbus0 on ahc0 bus 0:
<PIONEER CD-ROM DR-U16S 1.01>      at scbus0 target 2 lun 0 (pass0,cd0)
<IBM ULTRIUM-TD2 37RH>             at scbus0 target 3 lun 0 (sa0,pass1)
<DELL PV-132T 227D>                at scbus0 target 3 lun 1 (pass2,ch0)
<SUN DLT7000 183C>                 at scbus0 target 4 lun 0 (sa1,pass3)
<IBM ULTRIUM-TD1 36U3>             at scbus0 target 5 lun 0 (sa2,pass4)
<DELL PV-132T 227D>                at scbus0 target 5 lun 1 (pass5,ch1)
<YAMAHA CRW8424S 1.0d>             at scbus0 target 6 lun 0 (pass6,cd1)
<  >                               at scbus0 target -1 lun -1 ()
scbus1 on ahc1 bus 0:
<IBM 03570C1A 544D>                at scbus1 target 1 lun 0 (sa3,pass7)
<IBM 03575L32 2.19>                at scbus1 target 1 lun 1 (pass8,ch2)
<IBM 03570C1A 544D>                at scbus1 target 2 lun 0 (sa4,pass9)
<IBM 03570C1A 544D>                at scbus1 target 3 lun 0 (sa5,pass10)
<  >                               at scbus1 target -1 lun -1 ()
scbus-1 on xpt0 bus 0:
<  >                               at scbus-1 target -1 lun -1 (xpt0)

The third changer device (ch2) is an IBM 3575L32 tape library which has 
been in use for several months, never had any problems.

The server is running FreeBSD 5.4-STABLE on i386.

-- 
Åge Røbekk, Ventelo Comnet AS