Date: Wed, 13 May 1998 12:20:13 -0700 (PDT) From: Julian Elischer <julian@whistle.com> To: David Wolfskill <dhw@whistle.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: FreeBSD 2.2.6-RELEASE; SCSI device disappears??!? Message-ID: <Pine.BSF.3.95.980513121744.10467M-100000@current1.whistle.com> In-Reply-To: <199805131737.KAA27785@pau-amma.whistle.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Well maybe I should come over to your cube and look since I wrotes that driver.. Sounds like the drive is dropping off line.. Did you check the termination of what IS on the end of the chain? (it may have been done wrong intitially) julian (replying to the group for completness but coming right over.. :-) On Wed, 13 May 1998, David Wolfskill wrote: > This is rather long; sorry. I'm trying to be reasonably complete. > > Replaced a 0.5 GB Quantum disk with an 8.5 GB Micropolis; each at SCSI > target 2 on SCSI bus 0 (ahc0): > > /kernel: (ahc0:2:0): "MICROP 4691WS T171" type 0 fixed SCSI 2 > /kernel: sd2(ahc0:2:0): Direct-Access 8681MB (17780058 512 byte sectors) > > Hadn't had anything important (as it turns out) on the Quantum, so I > was in no rush to move the data over. Had already set up some filesystems > on the Micropolis drive (on a different FreeBSD box), where I had been > exercising it (successfully). > > Device is Ultra-SCSI w/ an adapter (as is another drive on the same > chain). Since the Quantum drive had been in the middle of the chain, I > removed the termination jumper on the Micropolis drive: during my > testing (on the other box), it had been the terminating device on the > chain. > > I had had /dev/sd2b set up as a 1 GB swap on the test box; for the re- > assignment, I thought it would be better to make it a filesystem, so I > did a "newfs" to it, then tried to mount it: > > shrimp[55]% sudo newfs /dev/rsd2b > /dev/rsd2b: 4194304 sectors in 1024 cylinders of 1 tracks, 4096 sectors > 2048.0MB in 64 cyl groups (16 c/g, 32.00MB/g, 7680 i/g) > super-block backups (for fsck -b #) at: > 32, 65568, 131104, 196640, 262176, 327712, 393248, 458784, 524320, 589856, > ... > 3866656, 3932192, 3997728, 4063264, 4128800, > shrimp[56]% sudo mount /dev/sd2b /shrimp/mntb > /dev/sd2b on /shrimp/mntb: Device not configured > > > Huh??!? > > Ran "sudo scsi -f /dev/rsd2.ctl -r" (alternated with several > interspersed attempts to perform "sudo disklabel -r sd2"); finally got > one that worked, finally(!) was able to do the mount, and fired up a > Perl script I had cobbled up to create & destroy files... which ran for > a while, then said: > > disk_tst-creator: Couldn't open /mntf/tmp/13055308 for writing: Input/output error > > I had been doing a "tail -f /var/log/messages" in another window all > this time... no clues there. > > Tried doing "ls mnt?" (I had mounted the various filesystems on the disk > at mount points that matched that expression)... and the "tmp" > subdirectories weren't visible. :-( > > Then I tried again, and they were visible. [I didn't do anything. Honest!] > > So I fired up my Perl script again, which started up, then hung. > > Then I heard a voice from another cube call out, asking if the machine > in question had hung. I tried firing up another window to take a > look... and decided that the better part of valor was to go down to the > server room & check. > > Just as I opened the door, I saw that the machine was completing the > multi-user start-up, and it then prompted for a login. > > Still no clues that I can see in /var/log/messages or in the output of > dmesg. > > So, since this is -questions, I have some: > > * Where might I look for clues as to why a filesystem (or the device) > keeps disappearing? > > * What might I do to prevent that behavior (while retaining the use of > the disk drive)? > > I look forward to suggestions.... :-( > > Thanks, > david > -- > David Wolfskill dhw@whistle.com (650) 577-7158 pager: (650) 371-4621 > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.3.95.980513121744.10467M-100000>