Date: Mon, 24 Mar 2003 23:13:46 -0500 From: taxman <taxman@acd.net> To: "Bob Perry" <rperry4@earthlink.net>, "Josh Paetzel" <friar_josh@webwarrior.net> Cc: <freebsd-questions@freebsd.org> Subject: Re: dmesg Analysis Message-ID: <200303242313.46575.taxman@acd.net> In-Reply-To: <010a01c2f279$0adc2780$0501a8c0@HOMEFREE> References: <005701c2f273$6f9bd680$0501a8c0@HOMEFREE> <20030325021300.GG716@ns1.webwarrior.net> <010a01c2f279$0adc2780$0501a8c0@HOMEFREE>
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On Monday 24 March 2003 09:48 pm, Bob Perry wrote: > > On Mon, Mar 24, 2003 at 09:08:31PM -0500, Bob Perry wrote: > > > I recently upgraded/reinstalled 4.7 RELEASE and apparently lost use of > my > > > SCSI tape backup system. The dmesg command indicates that FreeBSD > > > found > the > > > controller and tape but I don't understand much more than that. > > > > > > Does anyone know where I might find some documentation which would > explain > > > output resulting from running dmesg? For instance, one of the lines > reads: > > > sa0 at adv0 bus 0 target 4 lun 0 > > > > I don't know of any docs that really explain reading a dmesg in detail, > > but > > > I'd be willing to help you sort your issues if you posted your dmesg. > > Thanks Josh, > > I have a SCSI Seagate TapeStor system that worked fine under 4.5 RELEASE. > It worked equally as well when I tried a binary upgrade to 4.7. There were > too many other problems with the upgrade so later I did a complete install > of 4.7. This is where I found that my tape system no longer responded to > any mt commands. What errors do you get? Its always good to include those. > I ran the command dmesg | grep sa0 for the tape device and got the > following: > sa0 at adv0 bus 0 target 4 lun 0 > sa0: <Seagate STT20000N 6451> Removable Sequential Access SCSI-2 > device > sa0: 10,000 MB/s transfers (10,000 MHz, offset 15) > > Also ran dmesg | grep adv0 for the controller: > adv0: AdvanSys Ultra SCSI Host Adapter SCSI ID 7, queue depth 240 > adv0: <AdvanSys ASC3030/50 SCSI controller> port 0xb400-0xb4ff mem > 0x5000000-0xd50000ff irq 11 at device 12.0 on pci0 > > My kernel SCSI controller data reads: > adv0 at isa? > My kernel SCSI peripheral data reads: > sa Sequential Access (tape, etc) > > The best I can pull from this is that FreeBSD finds the tape and controller > when it boots. Yep, that's exactly it. So since it sees it, I don't have any idea what would cause the problem in it not working. As I mentioned, you'll have to include the error. Since it's not likely a problem in how FreeBSD sees the device, the links on how to read dmesg will not help you that much, but hopefully will be instructive anyway. Tim To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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