Date: Wed, 20 Sep 2000 21:59:35 +0200 From: Wilko Bulte <wkb@freebie.demon.nl> To: Edward Elhauge <ee@uncanny.net> Cc: freebsd-hackers@freebsd.org, freebsd-isp@freebsd.org Subject: Re: Frustration with SCSI system Message-ID: <20000920215935.G2695@freebie.demon.nl> In-Reply-To: <200009201958.MAA45703@ns2.uncanny.net>; from ee@uncanny.net on Wed, Sep 20, 2000 at 12:58:27PM -0700 References: <200009201958.MAA45703@ns2.uncanny.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, Sep 20, 2000 at 12:58:27PM -0700, Edward Elhauge wrote: > I've been using FreeBSD over the last 6 years (since I switched from > NetBSD) to run a small ISP out of my basement. > > I've had about six disk crashes in as many years and still don't know how > to work reliably with them. > > I have installed UPS boxes on each machine and that seems to have lowered > the incidence of failure, but failures still happen; yesterday during our > heat wave in the San Francisco area (possible brownouts also) I had > another. How hot gets your machine room/basement? > OK, so you have to expect these things; but I never seem to find an easy > way to recover these systems. The only thing that I've seen work has been > to mount the disk on another system, back it up, reformat the drive, copy > things back over and find out what was trashed. THERE MUST BE A BETTER > WAY. Yes. It is called RAID. Either in hardware or in software, using vinum. > It seems like SCSI systems can't use the bad144 program. They are supposed > to autorecover on bad sectors, but every system that I've had to recover > seems to be in a state where the bad sectors aren't remapping. I've tried > buying top of the line hardware, and it does work faster, but no more > reliably than the cheap stuff. Once you get in this state it is difficult > to mount the partitions so as to recover what is there. There are a finite amount of replacement blocks on each SCSI disk. Once they are given out you are toast. > I really need some good advice here. Do I need to buy RAID hardware for > each and every server in my network? Is there some way to force the SCSI > system to remap bad drives? > > The error I'm getting is: > MEDIUM ERROR info:1010f asc:14,1 Is automatic READ/WRITE remapping enabled on those drives? The real disk gurus (Ken, Justin) will want to know which disk types you have. camcontrol devlist or the dmesg.boot will tell them -- Wilko Bulte wilko@freebsd.org Arnhem, the Netherlands To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20000920215935.G2695>