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Date:      Thu, 28 Mar 1996 12:15:06 +0100
From:      knarf@camelot.de (Frank Bartels)
To:        freebsd-scsi@FreeBSD.org
Subject:   DAT problems
Message-ID:  <4jdsbq$lqj@lancelot.camelot.de>

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Hi all,

I have big problems to get a HP DAT drive working under FreeBSD
2.1.0-RELEASE.

 ncr0 <ncr 53c810 scsi> rev 2 int a irq 9 on pci0:1
 ncr0 waiting for scsi devices to settle
 (ncr0:0:0): "QUANTUM EMPIRE_1080S 1202" type 0 fixed SCSI 2
 sd0(ncr0:0:0): Direct-Access
 sd0(ncr0:0:0): FAST SCSI-2 125ns (8 Mb/sec) offset 8.
 1029MB (2109376 512 byte sectors)
 sd0(ncr0:0:0): with 2874 cyls, 8 heads, and an average 91 sectors/track
 (ncr0:4:0): "TOSHIBA CD-ROM XM-5301TA 0925" type 5 removable SCSI 2
 cd0(ncr0:4:0): CD-ROM 
 cd0(ncr0:4:0): asynchronous.
 cd present.[186827 x 2048 byte records]
 (ncr0:6:0): "HP HP35480A 1109" type 1 removable SCSI 2
 st0(ncr0:6:0): Sequential-Access 
 st0(ncr0:6:0): 200ns (5 Mb/sec) offset 8.
 density code 0x13, variable blocks, write-enabled

Using amanda's amrestore, I can produce the following error:

 st0(ncr0:6:0): COMMAND FAILED (4 88) @f08ea400.
 st0(ncr0:6:0): Deferred Error: MEDIUM ERROR asc:9,0 Track following error

After that the machine sometimes crashes a couple of minutes later.
The tape seems to wind forward and then backward and then panics.

I tried another tape in another SP3G with NCR.

 (ncr0:4:0): "HP HP35470A 9 09" type 1 removable SCSI 2

Same error. :/

So I bought a new machine:

 ahc0 <Adaptec aic7880 Ultra SCSI host adapter> rev 0 int a irq 11 on pci0:9
 ahc0: aic7870 Ultra Wide Channel, SCSI Id=7, aic7870, 255 SCBs
 ahc0 waiting for scsi devices to settle
 (ahc0:0:0): "IBM DSAS-3720 S47W" type 0 fixed SCSI 2
 sd0(ahc0:0:0): Direct-Access 696MB (1427328 512 byte sectors)
 (ahc0:6:0): "HP HP35480A 1109" type 1 removable SCSI 2
 st0(ahc0:6:0): Sequential-Access density code 0x13,  drive empty

And this is the output from a `tar tv':

 ahc0: target 6, lun 0 (st0) timed out
 st0(ahc0:6:0): BUS DEVICE RESET message queued.
 ahc0: target 6, lun 0 (st0) timed out
 st0(ahc0:6:0): UNIT ATTENTION asc:28,0
 st0(ahc0:6:0):  Not ready to ready transition, medium may have changed
 ahc0: Issued Channel A Bus Reset #1. 1 SCBs aborted
 ahc0: target 6, lun 0 (st0) timed out
 st0(ahc0:6:0): BUS DEVICE RESET message queued.
 st0(ahc0:6:0): Deferred Error: MEDIUM ERROR asc:9,0 Track following error
 sd0(ahc0:0:0): UNIT ATTENTION asc:29,0
 sd0(ahc0:0:0):  Power on, reset, or bus device reset occurred, retries:4
 ahc0: target 6, lun 0 (st0) timed out
 st0(ahc0:6:0): BUS DEVICE RESET message queued.
 ahc0: target 6, lun 0 (st0) timed out
 st0(ahc0:6:0): UNIT ATTENTION asc:28,0
 st0(ahc0:6:0):  Not ready to ready transition, medium may have changed
 ahc0: Issued Channel A Bus Reset #1. 1 SCBs aborted
 st0(ahc0:6:0): UNIT ATTENTION asc:29,0
 st0(ahc0:6:0):  Power on, reset, or bus device reset occurred
 st0(ahc0:6:0): Deferred Error: HARDWARE FAILURE asc:9,0 Track following error field replaceable unit: 1

I don't know which machine/scsi-controller/tape-drive/tape combination
I did not try, but I really would like to continue my backups. I really
have no idea where the problem really is. Hardware? Software?

Please help!

Bye,
Knarf
-- 
  Frank Bartels   |UUCP/ZModem/Fax: + 49 89 5469593| "Captain, why not just
 knarf@camelot.de |  http://www.camelot.de/~knarf/ | give the Borg Windows?"



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