Date: Fri, 15 Jun 2007 16:52:24 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Lapo Luchini <lapo@lapo.it> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS panic on mdX-based raidz Message-ID: <20070615145224.GA39202@garage.freebsd.pl> In-Reply-To: <f4tjii$bus$1@sea.gmane.org> References: <f4tjii$bus$1@sea.gmane.org>
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[-- Attachment #1 --] On Fri, Jun 15, 2007 at 10:45:06AM +0200, Lapo Luchini wrote: > I have a vmcore, a couple of them in fact, but they don't seem to have a > valid bt in them.. dunno why, I'm not really into kgdb yet 0=) > (only backtrace visible is kern_shutdown, then only ??) > > This is the list of operations with whom I can reproduce the panic at > will (or, at the very least, with whom I reproduced it three times): > rm data0 data1 data2 > truncate -s 64M data0 > truncate -s 128M data1 > truncate -s 256M data2 > mdconfig -f data0 -u 0 > mdconfig -f data1 -u 1 > mdconfig -f data2 -u 2 > zpool create prova raidz md0 md1 md2 > zfs create -o mountpoint=/usr/tmp/p prova/p > dd if=/dev/zero of=/usr/tmp/p/file bs=1M > zpool status > sysctl kern.geom.debugflags=16 > dd if=/dev/zero of=/dev/md0 bs=1M > dd if=/dev/zero of=/dev/md1 bs=1M > zpool scrub prova > zpool status > > Follows the status with two invalid disks (I wonder why :P) and a scrub > in progress; but the host will panic before the scrub ends. You corrupted two components in configuration with accepts only one disk failure. -- Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFGcqeoForvXbEpPzQRAsY1AKDFe9SFX46F+cBXlQpmC+3fYMHoUACgoSEA BKDdsKgTWG0z77GnamAnbbg= =nUkq -----END PGP SIGNATURE-----
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