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Date:      Tue, 16 Mar 2004 19:46:39 -0700
From:      David Bear <David.Bear@asu.edu>
To:        freebsd-questions@freebsd.org
Subject:   scsi tape errors
Message-ID:  <20040317024639.GH6174@asu.edu>

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I am getting error messages that don't make much sense. They would
lead me to beleive that the tape is bad... I guess. Yet, I have a hard
time beleiving that the two out of four tapes is bad.

issuing an 'mt erase' it get an input/output error.

below are the kernel messages.

could two tapes suddenly just become 'bad'?

Since these are ait tapes and have a 64k ram buffer, I'm wondering if
there may be some bad data there and if there is a way to clear it...

The tape unit is a sony sdx300c.  I've updated it to the latest
firmware. Its attached to an adaptec 2940wide.

Any advice would be greatly appreciated.
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D dmesg =3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=20
=2E.. lots of stuff deleted ...

Disconnected Queue entries: 0:0=20
QOUTFIFO entries:=20
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=20
Sequencer SCB Info: 0(c 0x44, s 0xa7, l 0, t 0x0) 1(c 0x0, s 0xff, l 255, t=
 0xff) 2(c 0x0, s 0xff, l 255, t 0xff) 3(c 0x0, s 0xff, l 255, t 0xff) 4(c =
0x0, s 0xff, l 255, t 0xff) 5(c 0x0, s 0xff, l 255, t 0xff) 6(c 0x0, s 0xff=
, l 255, t 0xff) 7(c 0x0, s 0xff, l 255, t 0xff) 8(c 0x0, s 0xff, l 255, t =
0xff) 9(c 0x0, s 0xff, l 255, t 0xff) 10(c 0x0, s 0xff, l 255, t 0xff) 11(c=
 0x0, s 0xff, l 255, t 0xff) 12(c 0x0, s 0xff, l 255, t 0xff) 13(c 0x0, s 0=
xff, l 255, t 0xff) 14(c 0x0, s 0xff, l 255, t 0xff) 15(c 0x0, s 0xff, l 25=
5, t 0xff) 16(c 0x0, s 0xff, l 255, t 0xff) 17(c 0x0, s 0xff, l 255, t 0xff=
) 18(c 0x0, s 0xff, l 255, t 0xff) 19(c 0x0, s 0xff, l 255, t 0xff) 20(c 0x=
0, s 0xff, l 255, t 0xff) 21(c 0x0, s 0xff, l 255, t 0xff) 22(c 0x0, s 0xff=
, l 255, t 0xff) 23(c 0x0, s 0xff, l 255, t 0xff) 24(c 0x0, s 0xff, l 255, =
t 0xff) 25(c 0x0, s 0xff, l 255, t 0xff) 26(c 0x0, s 0xff, l 255, t 0xff) 2=
7(c 0x0, s 0xff, l 255, t 0xff) 28(c 0x0, s 0xff, l 255, t 0xff) 29(c 0x0, =
s 0xff, l 255,=20
 t 0xff) 30(c 0x0, s 0xff, l 255, t 0xff) 31(c 0x0, s 0xff, l 255, t 0xff)=
=20
Pending list: 0(c 0x40, s 0xa7, l 0)
Kernel Free SCB list: 15 16 17 18 19 1 2 3 4 5 6 7 8 9 13 12 11 10=20
Untagged Q(10): 0=20
sg[0] - Addr 0x4366000 : Length 4096
sg[1] - Addr 0x3c27000 : Length 4096
(sa0:ahc1:0:10:0): Queuing a BDR SCB
(sa0:ahc1:0:10:0): Bus Device Reset Message Sent
(sa0:ahc1:0:10:0): no longer in timeout, status =3D 34b
ahc1: Bus Device Reset on A:10. 1 SCBs aborted
(sa0:ahc1:0:10:0): unable to rewind after test read

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

--=20
David Bear
phone: 	480-965-8257
fax: 	480-965-9189
College of Public Programs/ASU
Wilson Hall 232
Tempe, AZ 85287-0803
 "Beware the IP portfolio, everyone will be suspect of trespassing"



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