Dave, Fri Oct 19 02:03:10 GMT [isp_main]: Tape (1.0.0):cmdblk 0xfffffc0000e020f8 op 0xa block 64512 aborted command (b 47, 0)

The numbers in parentheses are SCSI status, ASC, and ASCQ, respectively. According to the SCSI spec, the drive is aborting the command (b) because it detected SCSI PARITY ERROR (47,0). It denotes an unstable SCSI bus, and could be caused by the adapter, the cable, the tape drive, or termitator.

(The "unrecognized" is just a hint from the filer that it wasn't one of the errors that the filer would attempt to recover from on its own.)

Steve -----Original Message----- From: Toal, Dave [mailto:dave.toal@t-t.com] Sent: Thursday, October 18, 2001 7:58 PM To: toasters@mathworks.com Subject: "unrecognized error 0xb" -- correct slot for tape scsi?

Folks,

I've been trying to get an F740 filer to recognize a dlt for several weeks. The error it returns is below. This same error also happens on another filer, also a 740. DLT checks out ok, according to the StorageTek tech's dignostics box.

Have tried swapping cables, and using different dlt's -- _always_ this "unrecognized error". The filer has been rebooted many times during this process. mt fsf, bsf, weof, &c all work ok, according to mt status, but all tape writes fail.

-- Dave Toal unix person T&T, nq, MA

statler> dump u0f nrst0a /vol/spool DUMP: Dumping tape file 1 on nrst0a DUMP: creating "/vol/spool/../snapshot_for_backup.0" snapshot. DUMP: Using Full Volume Dump DUMP: Date of this level 0 dump: Fri Oct 19 02:02:52 2001. DUMP: Date of last level 0 dump: the epoch. DUMP: Dumping /vol/spool/ to nrst0a DUMP: mapping (Pass I)[regular files] DUMP: mapping (Pass II)[directories] Fri Oct 19 02:03:10 GMT [isp_main]: Tape (1.0.0):cmdblk 0xfffffc0000e020f8 op 0xa block 64512 aborted command (b 47, 0) DUMP: Tape write failed. Fri Oct 19 02:03:10 GMT [isp_main]: Tape (1.0) unrecognized error 0xbunrecognized error 0xb. DUMP: DUMP IS ABORTED DUMP: Deleting "/vol/spool/../snapshot_for_backup.0" snapshot. statler>