SCSI Problems since upgrade from 2.2.16

From: George R. Kasica (georgek@netwrx1.com)
Date: Fri Dec 29 2000 - 10:16:38 EST


Hello:

I'm running an HP DAT 4mm Autochanger here and since going to 2.2.17
and 2.2.18 I'm seeing failures when it attempts to unload the tape and
load a new one while backing up using BRU PE...utilizing the mt or mtx
commands as follows:

mt -f $DEV rewoffl 2>&1 >/dev/null

OR

/usr/local/bin/mtx -f /dev/sg1 eject 2>&1 >/dev/null

If I use the MTX command set to "manually" change the tapes all is
well....any thoughts on the cause or a fix...I don't think the
hardware is broken due to the fact it runs fine "manually" by doing
the mtx -f /dev/sg1 next commnand to load the next tape

Pertinent info below:

Information about installed SCSI devices

Attached devices:
Host: scsi0 Channel: 00 Id: 01 Lun: 00
  Vendor: SEAGATE Model: ST32550N Rev: 0021
  Type: Direct-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 03 Lun: 00
  Vendor: HP Model: C1553A Rev: NS01
  Type: Sequential-Access ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 03 Lun: 01
  Vendor: HP Model: C1553A Rev: NS01
  Type: Medium Changer ANSI SCSI revision: 02

Bus 0, device 9, function 0:
    SCSI storage controller: Adaptec AIC-7850 (rev 1).
      Medium devsel. Fast back-to-back capable. IRQ 10. Master
Capable. Latency=32. Min Gnt=4.Max Lat=4.
      I/O at 0xd000 [0xd001].
      Non-prefetchable 32 bit memory at 0xdf000000 [0xdf000000].
  
SCSI support

CONFIG_SCSI = 1
CONFIG_BLK_DEV_SD = 1
CONFIG_CHR_DEV_ST = 1
CONFIG_BLK_DEV_SR = 1
CONFIG_CHR_DEV_SG = 1
CONFIG_SCSI_MULTI_LUN = 1
CONFIG_SCSI_CONSTANTS = 1
CONFIG_SCSI_LOGGING = 1

SCSI low-level drivers

CONFIG_SCSI_AIC7XXX = 1
CONFIG_AIC7XXX_CMDS_PER_DEVICE = (8)
CONFIG_AIC7XXX_RESET_DELAY = (5)

> Len: 20480
>
> Dec 23 01:24:37 eagle kernel: [valid=0] Info fld=0x0, EOM Current
> st09:00: sense key None
> Dec 23 01:24:37 eagle kernel: Additional sense indicates
> End-of-partition/medium detected
> Dec 23 01:24:37 eagle kernel: st0: Async write error (write) 7fffffff.
> Dec 23 01:24:40 eagle kernel: st0: File length 641863680 bytes.
> Dec 23 01:24:40 eagle kernel: st0: Async write waits 30037, finished
> 1304.
> Dec 23 01:24:42 eagle kernel: st0: Error: 28000002, cmd: 10 0 0 0 1 0
> Len: 0
> Dec 23 01:24:42 eagle kernel: [valid=0] Info fld=0x0, FMK EOM Current
> st09:00: sense key None
> Dec 23 01:24:42 eagle kernel: Additional sense indicates
> End-of-partition/medium detected
> Dec 23 01:24:42 eagle kernel: st0: Buffer flushed, 1 EOF(s) written

===[George R. Kasica]=== +1 262 513 8503
President +1 206 374 6482 FAX
Netwrx Consulting Inc. Waukesha, WI USA
http://www.netwrx1.com
georgek@netwrx1.com
ICQ #12862186
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