/dev/sa0 DSS-4 drive help

[William Bailey]

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Hi All,

	I am currently trying to get a DSS-4 type drive working on a 5.2.1
RELEASE system but am haveing no joy at all. From dmesg at boot the
device if found as

sa0 at ahc0 bus 0 target 6 lun 0
sa0: <ARCHIVE Python 06408-XXX 8130> Removable Sequential Access SCSI-3
device
sa0: 80.000MB/s transfers (40.000MHz, offset 32, 16bit)


	'mt status' gives the following (first 2 lines)

Mode      Density              Blocksize      bpi      Compression
Current:  0x26:DDS-4           1024 bytes     97000    DCLZ

	I have also tried setting blocksize to variable without any success (mt
blocksize 0).

	Now when i try to use dump or tar the system will just sit there untill
i get a kernel: <<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>
message which then locks out the tape drive untill.

For an example the command 'tar -cf /dev/sa0 /root/*-supfile' gave the
following dump...

For reference ls -l /root/*-supfile returns...

- -r--r--r--  1 root  wheel  2761 Apr  9 17:23 /root/doc-supfile
- -r--r--r--  1 root  wheel  3831 Apr  9 17:22 /root/ports-supfile
- -r--r--r--  1 root  wheel  3957 Apr  9 17:22 /root/stable-supfile


|>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<
ahc0: Dumping Card State while idle, at SEQADDR 0x9
Card was paused
ACCUM = 0x0, SINDEX = 0x14, DINDEX = 0xe4, ARG_2 = 0x0
HCNT = 0x0 SCBPTR = 0x1e
SCSIPHASE[0x0] SCSISIGI[0x0] ERROR[0x0] SCSIBUSL[0x0]
LASTPHASE[0x1]:(P_BUSFREE) SCSISEQ[0x12]:(ENAUTOATNP|ENRSELI)
SBLKCTL[0xa]:(SELWIDE|SELBUSB) SCSIRATE[0x0] SEQCTL[0x10]:(FASTMODE)
SEQ_FLAGS[0xc0]:(NO_CDB_SENT|NOT_IDENTIFIED) SSTAT0[0x0]
SSTAT1[0x8]:(BUSFREE) SSTAT2[0x0] SSTAT3[0x0] SIMODE0[0x8]:(ENSWRAP)
SIMODE1[0xa4]:(ENSCSIPERR|ENSCSIRST|ENSELTIMO) SXFRCTL0[0x80]:(DFON)
DFCNTRL[0x0] DFSTATUS[0x89]:(FIFOEMP|HDONE|PRELOAD_AVAIL)
STACK: 0x0 0x163 0x109 0x3
SCB count = 40
Kernel NEXTQSCB = 32
Card NEXTQSCB = 32
QINFIFO entries:
Waiting Queue entries:
Disconnected Queue entries: 1:7
QOUTFIFO entries:
Sequencer Free SCB List: 30 20 14 12 23 28 26 18 11 16 25 0 29 24 17 5
21 22 27 15 6 2 3 31 19 4 13 10 7 9 8
Sequencer SCB Info:
~  0 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~  1 SCB_CONTROL[0x44]:(DISCONNECTED|DISCENB) SCB_SCSIID[0x67]
SCB_LUN[0x0] SCB_TAG[0x7]
~  2 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~  3 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~  4 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~  5 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~  6 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~  7 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~  8 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~  9 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 10 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 11 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 12 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 13 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 14 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 15 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 16 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 17 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 18 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 19 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 20 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 21 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 22 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 23 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 24 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 25 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 26 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 27 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 28 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 29 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 30 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
~ 31 SCB_CONTROL[0xe0]:(TAG_ENB|DISCENB|TARGET_SCB) SCB_SCSIID[0x27]
SCB_LUN[0x0] SCB_TAG[0xff]
Pending list:
~  7 SCB_CONTROL[0x40]:(DISCENB) SCB_SCSIID[0x67] SCB_LUN[0x0]
Kernel Free SCB list: 20 14 18 10 9 39 35 8 23 12 37 17 24 15 27 22 26
36 33 3 34 38 21 25 13 11 29 4 16 19 28 5 2 1 0 6 31 30
Untagged Q(6): 7

|>>>>>>>>>>>>>>>>
sg[0] - Addr 0x168a7e42 : Length 446
sg[1] - Addr 0x16968000 : Length 4096
sg[2] - Addr 0x16869000 : Length 2048
(sa0:ahc0:0:6:0): Queuing a BDR SCB
(sa0:ahc0:0:6:0): Bus Device Reset Message Sent
(sa0:ahc0:0:6:0): no longer in timeout, status = 34b
ahc0: Bus Device Reset on A:6. 1 SCBs aborted
(sa0:ahc0:0:6:0): Unexpected busfree in Message-in phase
SEQADDR == 0x1a6
(sa0:ahc0:0:6:0): failed to write terminating filemark(s)
(sa0:ahc0:0:6:0): PREVENT ALLOW MEDIUM REMOVAL. CDB: 1e 0 0 0 0 0
(sa0:ahc0:0:6:0): CAM Status: SCSI Status Error
(sa0:ahc0:0:6:0): SCSI Status: Check Condition
(sa0:ahc0:0:6:0): UNIT ATTENTION asc:29,0
(sa0:ahc0:0:6:0): Power on, reset, or bus device reset occurred
(sa0:ahc0:0:6:0): Unretryable error
(sa0:ahc0:0:6:0): REWIND. CDB: 1 0 0 0 0 0
(sa0:ahc0:0:6:0): CAM Status: SCSI Status Error
(sa0:ahc0:0:6:0): SCSI Status: Check Condition
(sa0:ahc0:0:6:0): HARDWARE FAILURE asc:44,0
(sa0:ahc0:0:6:0): Internal target failure
(sa0:ahc0:0:6:0): Retrying Command (per Sense Data)
(sa0:ahc0:0:6:0): REWIND. CDB: 1 0 0 0 0 0
(sa0:ahc0:0:6:0): CAM Status: SCSI Status Error
(sa0:ahc0:0:6:0): SCSI Status: Check Condition
(sa0:ahc0:0:6:0): HARDWARE FAILURE asc:44,0
(sa0:ahc0:0:6:0): Internal target failure
(sa0:ahc0:0:6:0): Retries Exhausted
(sa0:ahc0:0:6:0): tape is now frozen- use an OFFLINE, REWIND or MTEOM
command to clear this state.



- --
Regards,
	William Bailey.
	Pro-Net Internet Services Ltd.
	http://www.pro-net.co.uk/
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