Date: Fri, 25 May 2001 11:05:56 -0400 From: "Eric Sproul" <esproul@cstone.net> To: freebsd-hardware@freebsd.org Subject: problem with tape drive? Message-ID: <3B0E74D4.2C293F35@cstone.net>
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Hi, I'm using an Exabyte EXB-210 tape changer with one Mammoth drive under 4.3-RELEASE with Amanda. The past two nights, Amanda has reported failures while writing backups to tape. I noticed the following messages in dmesg: (sa0:ahc1:0:6:0): SCB 0x4 - timed out while idle, SEQADDR == 0x8 STACK == 0x3, 0x17c, 0x166, 0x0 SXFRCTL0 == 0x80 ahc1: Dumping Card State at SEQADDR 0x8 SCSISEQ = 0x12, SBLKCTL = 0x6, SSTAT0 0x0 SCB count = 20 Kernel NEXTQSCB = 3 Card NEXTQSCB = 3 QINFIFO entries: Waiting Queue entries: Disconnected Queue entries: 0:4 QOUTFIFO entries: 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 Pending list: 4 Kernel Free SCB list: 14 15 16 17 18 19 0 1 2 5 6 7 8 9 13 12 11 10 Untagged Q(6): 4 (sa0:ahc1:0:6:0): Queuing a BDR SCB (sa0:ahc1:0:6:0): Bus Device Reset Message Sent (sa0:ahc1:0:6:0): no longer in timeout, status = 34b ahc1: Bus Device Reset on A:6. 1 SCBs aborted (sa0:ahc1:0:6:0): WRITE FILEMARKS. CDB: 10 0 0 0 2 0 (sa0:ahc1:0:6:0): UNIT ATTENTION csi:0,0,0,44 asc:29,0 (sa0:ahc1:0:6:0): Power on, reset, or bus device reset occurred (sa0:ahc1:0:6:0): failed to write terminating filemark(s) (sa0:ahc1:0:6:0): tape is now frozen- use an OFFLINE, REWIND or MTEOM command to clear this state. Here's the probe for ahc1 and sa0: ahc1: <Adaptec aic7896/97 Ultra2 SCSI adapter> port 0xe800-0xe8ff mem 0xfebef000-0xfebeffff irq 10 at device 11.1 on pci0 aic7896/97: Wide Channel B, SCSI Id=7, 32/255 SCBs sa0 at ahc1 bus 0 target 6 lun 0 sa0: <EXABYTE EXB-89008E000204 V38b> Removable Sequential Access SCSI-2 device sa0: 10.000MB/s transfers (10.000MHz, offset 15) The SCSI controller is integrated on the Tyan S1837 motherboard. Can anyone tell me what happened here? It is not a persistent problem because after I noticed the failures, I flushed the remaining dumps without incident. Thanks in advance! Eric To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
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