[kwlug-disc] Tape Library and/or SCSI issue

Chris Irwin chris at chrisirwin.ca
Tue Dec 30 21:11:21 EST 2008


List,

I acquired a SpectraLogic 2k tape library, and purchased an adaptec
29160 ("Adaptec AIC-7892A U160/m (rev 02)" according to lspci) card and
appropriate cable to connect. This is my first foray into SCSI and I
have been having significant difficulty.

Unfortunately, as I am not familiar with SCSI, I am not sure how to
narrow down the issue to driver, library, or card (Though the Library
has previously worked when it was installed at work). 

If there are any SCSI gurus around who could help me diagnose my
problems (SCSI "Sense" codes seem to be useful, but I have no idea how
to acquire them)

So far, I have set the card (via the card's BIOS) to disable Domain
Validation (The machine would not get past the SCSI BIOS with this
enabled). I have also set "Wide SCSI Negotiation" to false for all SCSI
IDs as the tape drive is not a wide device, but the aic79xxx driver was
attempting to use it as such and throwing parity errors.

I have blacklisted the ch and osst drivers as they were throwing
warnings about using depreciated APIs, and it seems everything just uses
the sg drivers anyway. I have also created /dev/changer as a symlink
to /dev/sg2, which is the tape changer (I did this to avoid having to
specify -f /dev/sg2 on the mtx commands).

I'm all ears. Does anybody know what else I should look for?

Below is the output of (what I think are) relevant commands:

uname -a
 Linux master 2.6.27-9-server #1 SMP Thu Nov 20 22:56:07 UTC 2008 x86_64
GNU/Linux


cat /proc/scsi/scsi (The first two as they are my SATA disk and optical
drive)
 Attached devices:
 Host: scsi0 Channel: 00 Id: 00 Lun: 00
   Vendor: ATA      Model: WDC WD5000AAKS-2 Rev: 12.0
   Type:   Direct-Access                    ANSI  SCSI revision: 05
 Host: scsi4 Channel: 00 Id: 00 Lun: 00
   Vendor: HL-DT-ST Model: DVD-ROM GDR8163B Rev: 0L23
   Type:   CD-ROM                           ANSI  SCSI revision: 05
 Host: scsi7 Channel: 00 Id: 02 Lun: 00
   Vendor: SPECTRA  Model: 215              Rev: 2202
   Type:   Medium Changer                   ANSI  SCSI revision: 02
 Host: scsi7 Channel: 00 Id: 03 Lun: 00
   Vendor: SONY     Model: SDX-500C         Rev: 02b3
   Type:   Sequential-Access                ANSI  SCSI revision: 02
 Host: scsi7 Channel: 00 Id: 04 Lun: 00
   Vendor: SONY     Model: SDX-500C         Rev: 02b3
   Type:   Sequential-Access                ANSI  SCSI revision: 02


mtx inquiry (This seems to be all I can actually do with the changer.)
 Product Type: Medium Changer
 Vendor ID: 'SPECTRA '
 Product ID: '215             '
 Revision: '2202'
 Attached Changer API: No


mtx status (Note that this hangs for several minutes before outputting
the illegal Element Type Code.)
 mtx: Request Sense: Long Report=yes
 mtx: Request Sense: Valid Residual=yes
 mtx: Request Sense: Error Code=70 (Current)
 mtx: Request Sense: Sense Key=Unit Attention
 mtx: Request Sense: FileMark=no
 mtx: Request Sense: EOM=no
 mtx: Request Sense: ILI=no
 mtx: Request Sense: Residual = 00 00 00 00
 mtx: Request Sense: Additional Sense Code = 29
 mtx: Request Sense: Additional Sense Qualifier = 00
 mtx: Request Sense: BPV=no
 mtx: Request Sense: Error in CDB=no
 mtx: Request Sense: SKSV=no
 Mode sense (0x1A) for Page 0x1D failed
 illegal Element Type Code 83 reported

I looked up the Additional Sense Code/Qualifiers:
http://www.spectralogic.com/index.cfm?fuseaction=support.senseCodeResult&CatID=311&senseKey=&senseCode=29&senseQualifier=00&SUBMIT=Submit#self#


bottom part of dmesg (After the illegal Element Type Code gets printed:
 [ 3624.450022] scsi 7:0:2:0: Attempting to queue an ABORT message
 [ 3624.450029] CDB: 0xb8 0x12 0x0 0x0 0x0 0x40 0x0 0x0 0x16 0x1c 0x0
0x0
 [ 3624.450056] scsi7: At time of recovery, card was not paused
 [ 3624.450067] >>>>>>>>>>>>>>>>>> Dump Card State Begins
<<<<<<<<<<<<<<<<<
 [ 3624.450068] scsi7: Dumping Card State while idle, at SEQADDR 0x8
 [ 3624.450070] Card was paused
 [ 3624.450078] ACCUM = 0x4, SINDEX = 0x20, DINDEX = 0x23, ARG_2 = 0x0
 [ 3624.450083] HCNT = 0x0 SCBPTR = 0x0
 [ 3624.450086] SCSIPHASE[0x0] SCSISIGI[0x0] ERROR[0x0] 
 [ 3624.450095] SCSIBUSL[0x0] LASTPHASE[0x1]:(P_BUSFREE) 
 [ 3624.450102] SCSISEQ[0x12]:(ENAUTOATNP|ENRSELI) 
 [ 3624.450106] SBLKCTL[0xa]:(SELWIDE|SELBUSB) SCSIRATE[0x0] 
 [ 3624.450113] SEQCTL[0x10]:(FASTMODE) SEQ_FLAGS[0xc0]:(NO_CDB_SENT|
NOT_IDENTIFIED) 
 [ 3624.450121] SSTAT0[0x0] SSTAT1[0x8]:(BUSFREE) 
 [ 3624.450128] SSTAT2[0x0] SSTAT3[0x0] SIMODE0[0x8]:(ENSWRAP) 
 [ 3624.450137] SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO) 
 [ 3624.450142] SXFRCTL0[0x80]:(DFON) DFCNTRL[0x0] 
 [ 3624.450149] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL) 
 [ 3624.450152] STACK: 0x0 0x164 0x179 0x3
 [ 3624.450167] SCB count = 4
 [ 3624.450168] Kernel NEXTQSCB = 2
 [ 3624.450171] Card NEXTQSCB = 2
 [ 3624.450172] QINFIFO entries: 
 [ 3624.450176] Waiting Queue entries: 
 [ 3624.450179] Disconnected Queue entries: 0:3 
 [ 3624.450187] QOUTFIFO entries: 
 [ 3624.450188] Sequencer Free SCB List: 1 2 3 4 5 6 7 8 9 10 11 12 13
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 
 [ 3624.450282] Sequencer SCB Info: 
 [ 3624.450285]   0 SCB_CONTROL[0x44]:(DISCONNECTED|DISCENB) 
 [ 3624.450292] SCB_SCSIID[0x20] SCB_LUN[0x0] SCB_TAG[0x3] 
 [ 3624.450300]   1 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450309] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450315]   2 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450324] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450329]   3 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450338] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450344]   4 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450353] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450358]   5 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450367] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450373]   6 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450382] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450387]   7 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450396] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450402]   8 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450411] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450416]   9 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450425] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450431]  10 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450440] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450445]  11 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450454] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450460]  12 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450469] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450475]  13 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450484] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450489]  14 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450498] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450504]  15 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450513] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450519]  16 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450527] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450533]  17 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450542] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450547]  18 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450556] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450562]  19 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450571] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450576]  20 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450585] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450591]  21 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450600] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450605]  22 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450614] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450620]  23 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450629] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450634]  24 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450643] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450649]  25 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450658] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450663]  26 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450672] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450678]  27 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450687] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450692]  28 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450701] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450707]  29 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450716] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450721]  30 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450730] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450736]  31 SCB_CONTROL[0x0] SCB_SCSIID[0xff]:(TWIN_CHNLB|OID|
TWIN_TID) 
 [ 3624.450745] SCB_LUN[0xff]:(SCB_XFERLEN_ODD|LID) SCB_TAG[0xff] 
 [ 3624.450750] Pending list: 
 [ 3624.450751]   3 SCB_CONTROL[0x40]:(DISCENB) SCB_SCSIID[0x20] 
 [ 3624.450755] SCB_LUN[0x0] 
 [ 3624.450756] Kernel Free SCB list: 1 0 
 [ 3624.450758] Untagged Q(2): 3 
 [ 3624.450760] 
 [ 3624.450761] <<<<<<<<<<<<<<<<< Dump Card State Ends
>>>>>>>>>>>>>>>>>>
 [ 3624.450814] (scsi7:A:2:0): Device is disconnected, re-queuing SCB
 [ 3624.450818] Recovery code sleeping
 [ 3624.706435] Recovery SCB completes
 [ 3624.706688] Recovery code awake
 [ 3624.706693] aic7xxx_abort returns 0x2002
 [ 3624.962473] scsi 7:0:2:0: Attempting to queue a TARGET RESET message
 [ 3624.962478] CDB: 0xb8 0x12 0x0 0x0 0x0 0x40 0x0 0x0 0x16 0x1c 0x0
0x0
 [ 3624.962484] scsi 7:0:2:0: Command not found
 [ 3624.962486] aic7xxx_dev_reset returns 0x2002

-- 
Chris Irwin <chris at chrisirwin.ca>
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