Date: Thu, 2 Mar 2006 19:48:57 +0100 From: Marius Nuennerich <marius.nuennerich@gmx.net> To: Martin <nakal@nurfuerspam.de> Cc: stable@freebsd.org Subject: Re: Panics with md/gvinum/ufs Message-ID: <20060302194857.407f9ba8@sol> In-Reply-To: <440734A8.1010908@nurfuerspam.de> References: <440734A8.1010908@nurfuerspam.de>
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On Thu, 02 Mar 2006 19:08:40 +0100 Martin <nakal@nurfuerspam.de> wrote: > > Hi, > > I've done some strange(?) experiments and I managed to get > a panic of type "baddir" and just now another one that only > rebooted my system instantly without writing a vmcore. > > I don't know if this is important. I could not find any > information on how gvinum detects failed hard disks. > That's why I tried something really simple. > > Steps to reproduce: > > 1) > dd if=/dev/zero of=a bs=1024 count=256000 > dd if=/dev/zero of=b bs=1024 count=256000 > dd if=/dev/zero of=c bs=1024 count=256000 > > 2) > mdconfig -a -t vnode -u 0 -f a > mdconfig -a -t vnode -u 1 -f b > mdconfig -a -t vnode -u 2 -f c > > 3) > gvinum create raid5.conf > > with raid5.conf: > drive a device /dev/md0 > drive b device /dev/md1 > drive c device /dev/md2 > volume raid5 > plex org raid5 491k > sd length 0 drive a > sd length 0 drive b > sd length 0 drive c > > 4) > newfs -m 0 /dev/raid5 > > 5) > mount /dev/gvinum/raid5 /mnt/ > mkdir /mnt/aaa > > 6) > dd if=/dev/zero of=c bs=1024 count=256000 > > 7) > cd /mnt/aaa > touch a > > 8) > Repeat the steps 6) and 7) if it does not > panic at this point. Looks similar to the one I reported a few days ago: http://lists.freebsd.org/pipermail/freebsd-geom/2006-March/001095.html regards Marius
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