Date: Mon, 17 May 2010 22:08:57 +0200 From: Holm Tiffe <holm@freibergnet.de> To: Matthew Jacob <mj@feral.com> Cc: freebsd-scsi@freebsd.org Subject: Re: Problems with DLT on 8-Stable Message-ID: <20100517200856.GB96425@pegasus.freiberg-net.de> In-Reply-To: <4BF189BE.9000008@feral.com> References: <20100517150513.GA93298@pegasus.freiberg-net.de> <4BF16C62.6010104@feral.com> <20100517175923.GA96425@pegasus.freiberg-net.de> <4BF189BE.9000008@feral.com>
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Matthew Jacob wrote:
> Holm Tiffe wrote:
> >You can get what you ever want, but there is no message in
> >/var/log/messages regarding this.
> >
> The messages state a "Media Not Present" error, on top of two TUR
> conditions.
Did you mean this:
(probe6:ahc0:0:6:0): TEST UNIT READY. CDB: 0 0 0 0 0 0
(probe6:ahc0:0:6:0): CAM status: SCSI Status Error
(probe6:ahc0:0:6:0): SCSI status: Check Condition
(probe6:ahc0:0:6:0): SCSI sense: UNIT ATTENTION asc:29,0 (Power on, reset,
or bu
s device reset occurred)
(probe5:ahc0:0:5:0): TEST UNIT READY. CDB: 0 0 0 0 0 0
(probe5:ahc0:0:5:0): CAM status: SCSI Status Error
(probe5:ahc0:0:5:0): SCSI status: Check Condition
(probe5:ahc0:0:5:0): SCSI sense: UNIT ATTENTION asc:29,0 (Power on, reset,
or bu
s device reset occurred)
(probe5:ahc0:0:5:0): TEST UNIT READY. CDB: 0 0 0 0 0 0
(probe5:ahc0:0:5:0): CAM status: SCSI Status Error
(probe5:ahc0:0:5:0): SCSI status: Check Condition
(probe5:ahc0:0:5:0): SCSI sense: NOT READY asc:3a,0 (Medium not present)
sa0 at ahc0 bus 0 scbus0 target 5 lun 0
sa0: <TANDBERG SLR5 4/8GB =09:> Removable Sequential Access SCSI-2 device
sa0: 3.300MB/s transfers
If so, no, that has nothing todo with the DLT or the dump,
0:5:0 is a Tandberg QIC Streamer and the message was appearing while
booting (/var/run/dmesg.boot)
# camcontrol devlist
<IBM-SSG S53D073 C61E> at scbus0 target 0 lun 0 (da0,pass0)
<IBM-SSG S53D073 C61E> at scbus0 target 1 lun 0 (da1,pass1)
<IBM-SSG S53D073 C61A> at scbus0 target 2 lun 0 (da2,pass2)
<IBM-SSG S53D073 C61A> at scbus0 target 3 lun 0 (da3,pass3)
<TANDBERG SLR5 4/8GB =09:> at scbus0 target 5 lun 0 (sa0,pass4)
<Quantum DLT4000 CC28> at scbus0 target 6 lun 0 (sa1,pass5)
>
> Do any of these correlate to you changing the tapes?
No.
There is nothing on console or /var/log/messages after changing the tape.
It is simple dump that complains there where an EOT on the new inserted
tape.
>
> The '65536-byte tape record' message is interesting. For some reason,
> sa is receiving a write that is no 64K in size, and the tape is in
> 'fixed' 64K block mode.
Hmm, I think the other way around.
I've wrote 64K blocks with the last dump on the tape and somebody is trying
to read with a smaller buffer....
Remember, I do dumps like this:
dump L0uaf /dev/nsa1 -b 64 -C 16 /data
where b is the Blocksize in k and C is the Cache size in Meg.
>
> Can you send the output of 'mt -f /dev/nsa1 status' with a tape loaded.
# mt -f /dev/nsa1 status
Mode Density Blocksize bpi Compression
Current: 0x1a:DLTapeIV(20GB) variable 81633 IDRC
---------available modes---------
0: 0x1a:DLTapeIV(20GB) variable 81633 IDRC
1: 0x1a:DLTapeIV(20GB) variable 81633 IDRC
2: 0x1a:DLTapeIV(20GB) variable 81633 IDRC
3: 0x1a:DLTapeIV(20GB) variable 81633 IDRC
---------------------------------
Current Driver State: at rest.
---------------------------------
File Number: 1 Record Number: 0 Residual Count 0
>
> More than that I'll have to dig up a tape drive and attach it- I haven't
> used on on FreeBSD in years.
I'll test this on the old trusty Tandberg 8Gig QIC drive tomorrow and will
post the results.
Kind Regards,
Holm
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