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Date:      Sat, 27 Feb 1999 20:50:01 -0800 (PST)
From:      "Kenneth D. Merry" <ken@plutotech.com>
To:        freebsd-bugs@FreeBSD.org
Subject:   Re: kern/10281: Crash of 3.1-STABLE system due to scsi error.
Message-ID:  <199902280450.UAA52815@freefall.freebsd.org>

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The following reply was made to PR kern/10281; it has been noted by GNATS.

From: "Kenneth D. Merry" <ken@plutotech.com>
To: marijn@gewis.win.tue.nl
Cc: FreeBSD-gnats-submit@FreeBSD.ORG, mjacob@feral.com
Subject: Re: kern/10281: Crash of 3.1-STABLE system due to scsi error.
Date: Sat, 27 Feb 1999 21:45:20 -0700 (MST)

 marijn@gewis.win.tue.nl wrote...
 > Feb 24 22:17:07 gewis /kernel: Waiting 5 seconds for SCSI devices to settle
 > Feb 24 22:17:07 gewis /kernel: sa0 at aha0 bus 0 target 0 lun 0
 > Feb 24 22:17:07 gewis /kernel: sa0: <HP T4000s 1.08> Removable Sequential Access SCSI-2 device 
 > Feb 24 22:17:07 gewis /kernel: sa0: 3.300MB/s transfers
 > Feb 24 22:17:07 gewis /kernel: da0 at aha0 bus 0 target 2 lun 0
 > Feb 24 22:17:07 gewis /kernel: da0: <FUJITSU M2694ES-512 812A> Fixed Direct Access SCSI-2 device 
 > Feb 24 22:17:07 gewis /kernel: aha0: ahafetchtransinfo - Inquire Setup Info Failed
 > Feb 24 22:17:07 gewis /kernel: da0: 3.300MB/s transfers
 > Feb 24 22:17:07 gewis /kernel: da0: 1033MB (2117025 512 byte sectors: 64H 32S/T 1033C)
 > Feb 24 22:17:07 gewis /kernel: da1 at aha0 bus 0 target 3 lun 0
 > Feb 24 22:17:07 gewis /kernel: da1: <FUJITSU M2266S-512 0014> Fixed Direct Access SCSI-CCS device 
 > Feb 24 22:17:07 gewis /kernel: da1: 3.300MB/s transfers
 > Feb 24 22:17:07 gewis /kernel: da1: 1030MB (2111018 512 byte sectors: 64H 32S/T 1030C)
 > Feb 24 22:17:07 gewis /kernel: da2 at aha0 bus 0 target 4 lun 0
 > Feb 24 22:17:07 gewis /kernel: da2: <FUJITSU M2266S-512 0020> Fixed Direct Access SCSI-CCS device 
 > Feb 24 22:17:07 gewis /kernel: da2: 3.300MB/s transf
 > Feb 24 22:17:07 gewis /kernel: ers
 > Feb 24 22:17:07 gewis /kernel: da2: 1030MB (2111018 512 byte sectors: 64H 32S/T 1030C)
 > Feb 24 22:17:07 gewis /kernel: da3 at aha0 bus 0 target 5 lun 0
 > Feb 24 22:17:07 gewis /kernel: da3: <FUJITSU M2624F-512 0405> Fixed Direct Access SCSI-2 device 
 > Feb 24 22:17:07 gewis /kernel: da3: 3.300MB/s transfers
 > Feb 24 22:17:07 gewis /kernel: da3: 496MB (1015812 512 byte sectors: 64H 32S/T 496C)
 > Feb 24 22:17:07 gewis /kernel: changing root device to wd0s1a
 > Feb 24 22:17:07 gewis /kernel: (cd0:aha0:0:1:0): CCB 0xf3e0333c - timed out
 > Feb 24 22:17:07 gewis /kernel: (cd0:aha0:0:1:0): CCB 0xf3e0333c - timed out
 > Feb 24 22:17:07 gewis /kernel: aha0: No longer in timeout
 > Feb 24 22:17:07 gewis /kernel: cd0 at aha0 bus 0 target 1 lun 0
 > Feb 24 22:17:07 gewis /kernel: cd0: <HP CD-Writer 6020 1.07> Removable CD-ROM SCSI-2 device 
 > Feb 24 22:17:07 gewis /kernel: cd0: 3.300MB/s transfers
 > Feb 24 22:17:07 gewis /kernel: cd0: Attempt to query device size failed: NOT READY, Logical unit not ready, cause not reportable
 > 
 > >Description:
 >  >Description;
 >  
 >  While making a backup using afio, we got the following log entries:
 >  
 >  Feb 26 10:11:07 gewis /kernel: (sa0:aha0:0:0:0): SPACE. CDB: 11 1 0 0 1 0 
 >  Feb 26 10:11:07 gewis /kernel: (sa0:aha0:0:0:0): BLANK CHECK req sz: 1 (decimal) asc:0,5
 >  Feb 26 10:11:07 gewis /kernel: (sa0:aha0:0:0:0): End-of-data detected
 >  
 >  The one above is while reading an empty tape, so no problem here
 >  
 >  
 >  Feb 26 10:19:47 gewis /kernel: (sa0:aha0:0:0:0): SPACE. CDB: 11 1 ff ff ff 0 
 >  Feb 26 10:19:47 gewis /kernel: (sa0:aha0:0:0:0): ILLEGAL REQUEST asc:2c,0
 >  Feb 26 10:19:47 gewis /kernel: (sa0:aha0:0:0:0): Command sequence error
 >  Feb 26 10:19:47 gewis /kernel: (sa0:aha0:0:0:0): unable to backspace over one of double filemarks at EOD- opting for safety
 >  Feb 26 14:15:36 gewis /kernel: (sa0:aha0:0:0:0): SPACE. CDB: 11 1 ff ff ff 0 
 >  Feb 26 14:15:36 gewis /kernel: (sa0:aha0:0:0:0): ILLEGAL REQUEST asc:2c,0
 >  Feb 26 14:15:36 gewis /kernel: (sa0:aha0:0:0:0): Command sequence error
 >  Feb 26 14:15:36 gewis /kernel: (sa0:aha0:0:0:0): unable to backspace over one of double filemarks at EOD- opting for safety
 >  
 >  These two were generated during the backup. After the last entry there are
 >  no more log entries of the tape drive until the reboot. At 14:33 it
 >  crashed with a pagefault in CAM. I'm sorry I don't remember the details,
 >  but I wasn't the console at the time and the guy who was only remembers
 >  this.
 >  Oh, it tried to sync the filesystems, but that failed with 'giving up'.
 
 Without a stack trace, it's going to be extremely difficult to say what
 caused the panic, and without some cause, we can't come up with a solution.
 
 So, without some more information, there's very little we can do to help
 with the panic.
 
 As for the two errors above, I'm CCing this to Matthew Jacob
 <mjacob@feral.com> who is the current maintainer of the CAM tape driver.
 He may be interested in them.
 
 Ken
 -- 
 Kenneth Merry
 ken@plutotech.com
 


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