SCSI causing my server to crash...

[Kyle Kniepkamp]

Just wondering if anyone has any ideas as to what all of this means. I 
have an Overland Tape Changer with four LTO2 drives in it. Last night in 
the middle of performing a backup my server crashed. Here is the entry 
in /var/log/message:

Sep 15 05:09:58 grubsserv kernel: scsi2:0:6:0: Attempting to queue an 
ABORT message
Sep 15 05:09:58 grubsserv kernel: CDB: 0xa5 0x0 0x0 0x0 0x1 0xe3 0x0 
0x24 0x0 0x0 0x0 0x0 
Sep 15 05:09:58 grubsserv kernel: scsi2: At time of recovery, card was 
not paused
Sep 15 05:09:58 grubsserv kernel: >>>>>>>>>>>>>>>>>> Dump Card State 
Begins <<<<<<<<<<<<<<<<<
Sep 15 05:09:58 grubsserv kernel: scsi2: Dumping Card State while idle, 
at SEQADDR 0x8
Sep 15 05:09:58 grubsserv kernel: Card was paused
Sep 15 05:09:58 grubsserv kernel: ACCUM = 0x4, SINDEX = 0x67, DINDEX = 
0x27, ARG_2 = 0x1
Sep 15 05:09:58 grubsserv kernel: HCNT = 0x0 SCBPTR = 0x0
Sep 15 05:09:58 grubsserv kernel: SCSIPHASE[0x0] SCSISIGI[0x0] 
ERROR[0x0] SCSIBUSL[0x0]
Sep 15 05:09:58 grubsserv kernel: LASTPHASE[0x1] SCSISEQ[0x12] 
SBLKCTL[0xa] SCSIRATE[0x0]
Sep 15 05:09:58 grubsserv kernel: SEQCTL[0x10] SEQ_FLAGS[0xc0] 
SSTAT0[0x0] SSTAT1[0x8]
Sep 15 05:09:58 grubsserv kernel: SSTAT2[0x0] SSTAT3[0x0] SIMODE0[0x8] 
SIMODE1[0xa4]
Sep 15 05:09:58 grubsserv kernel: SXFRCTL0[0x80] DFCNTRL[0x0] DFSTATUS[0x89]
Sep 15 05:09:59 grubsserv kernel: STACK: 0x0 0x16a 0x17f 0x3
Sep 15 05:09:59 grubsserv kernel: SCB count = 6
Sep 15 05:09:59 grubsserv kernel: Kernel NEXTQSCB = 3
Sep 15 05:09:59 grubsserv kernel: Card NEXTQSCB = 3
Sep 15 05:09:59 grubsserv kernel: QINFIFO entries:
Sep 15 05:09:59 grubsserv kernel: Waiting Queue entries:
Sep 15 05:09:59 grubsserv kernel: Disconnected Queue entries: 0:5
Sep 15 05:09:59 grubsserv kernel: QOUTFIFO entries:
Sep 15 05:09:59 grubsserv kernel: 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
Sep 15 05:09:59 grubsserv kernel: Sequencer SCB Info:
Sep 15 05:09:59 grubsserv kernel:   0 SCB_CONTROL[0x44] SCB_SCSIID[0x67] 
SCB_LUN[0x0] SCB_TAG[0x5]
Sep 15 05:09:59 grubsserv kernel:   1 SCB_CONTROL[0xc0] SCB_SCSIID[0x67] 
SCB_LUN[0x0] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:   2 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:   3 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:   4 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:   5 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:   6 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:   7 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:   8 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:   9 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:  10 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:  11 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:  12 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:  13 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:  14 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:  15 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:  16 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]
Sep 15 05:09:59 grubsserv kernel:  17 SCB_CONTROL[0x0] SCB_SCSIID[0xff] 
SCB_LUN[0xff] SCB_TAG[0xff]

I am not too hip on SCSI errors so was wondering if anyone had any ideas 
as to why the crash happened?

Thanks,

----
Kyle Kniepkamp
Systems Administrator
Washington University
Department of Genetics