Date: Thu, 25 Feb 1999 15:54:01 -0700 (MST) From: "Kenneth D. Merry" <ken@plutotech.com> To: arnaud@DotCom.FR (Arnaud KOPP) Cc: scsi@FreeBSD.ORG Subject: Re: [3.1-RELEASE] Fujitsu M2513A 640MB MO ? Message-ID: <199902252254.PAA47903@panzer.plutotech.com> In-Reply-To: <199902251131.LAA00804@excalibur.oceanis.net> from Arnaud KOPP at "Feb 25, 1999 12:31:58 pm"
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Arnaud KOPP wrote... > I'm trying to correctly use my FUJITSU M2513A MO drive with FreeBSD > and get some SCSI errors when trying to unmount my tape : > > > # umount /mnt > > (da1:ahc0:0:4:0): SCB 0x2 - timed out in command phase, SEQADDR == 0x154 > (da1:ahc0:0:4:0): BDR message in message buffer > (da1:ahc0:0:4:0): SCB 0x2 - timed out in command phase, SEQADDR == 0x154 > (da1:ahc0:0:4:0): no longer in timeout, status = 34b > ahc0: Issued Channel A Bus Reset. 1 SCBs aborted The 'timed out in command phase' error indicates that you may have a cabling or termination problem. > da1 at ahc0 bus 0 target 4 lun 0 > da1: <FUJITSU M2513A 1300> Removable Direct Access SCSI-2 device > da1: 10.0MB/s transfers (10.0MHz, offset 10) > da1: 606MB (310352 2048 byte sectors: 64H 32S/T 151C) > da0 at ahc0 bus 0 target 0 lun 0 > da0: <IBM DDRS-34560D DC1B> Fixed Direct Access SCSI-2 device > da0: 40.0MB/s transfers (20.0MHz, offset 8, 16bit), Tagged Queueing Enabled > da0: 4357MB (8925000 512 byte sectors: 255H 63S/T 555C) > > > > My disktab says : > > > MO640|Fujitsu 2513A MO drive 640 Mb:\ > :dt=SCSI:ty=removable:\ > :nc#19397:ns#16:nt#1:\ > :se#2048:rm#3600:\ > :pa#310352:oa#0:ta=4.2BSD:ba#4096:fa#2048:\ > :pc#310352:oc#0:\ > :pd#310352:od#0: > > > # disklabel -w -r od1 MO640 > # newfs -m 0 -o space -i 12288 -u 16 -t 1 -c 413 /dev/rod1a > /dev/rod1a: 1241408 sectors in 19397 cylinders of 1 tracks, 64 sectors > 606.2MB in 47 cyl groups (413 c/g, 12.91MB/g, 1088 i/g) > super-block backups (for fsck -b #) at: > 32, 26464, 52896, 79328, 105760, 132192, 158624, 185056, 211488, 237920, > 264352, 290784, 317216, 343648, 370080, 396512, 422944, 449376, 475808, > 502240, 528672, 555104, 581536, 607968, 634400, 660832, 687264, 713696, > 740128, 766560, 792992, 819424, 845856, 872288, 898720, 925152, 951584, > 978016, 1004448, 1030880, 1057312, 1083744, 1110176, 1136608, 1163040, > 1189472, 1215904, > > # mount /dev/od1a /mnt > # umount /mnt Why are you using the 'od' device? The od device is no longer supported in FreeBSD 3.x, and I'm actually kinda amazed that you're able to do any I/O at all to it. The od device has been replaced by the 'da' device. That's why your MO drive shows up as da1. > That's OK. > > > but : > > # mount /dev/od1a /mnt > # cd /mnt > # dd if=/dev/zero of=test bs=2048 count=10000 > 10000+0 records in > 10000+0 records out > 20480000 bytes transferred in 24.621793 secs (831783 bytes/sec) [ ... ] > Any idea of what could be happening ? I know this drive has a write > cache enabled, maybe that's the point ? I think you probably have a cabling or termination problem. Turning write caching on or off won't make a difference. Ken -- Kenneth Merry ken@plutotech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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