Date: Sun, 26 Jun 2005 13:20:31 -0500 From: Skylar Thompson <skylar@cs.earlham.edu> To: fs@freebsd.org Subject: Snapshot problems Message-ID: <20050626182031.GA5268@quark.cs.earlham.edu>
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--7AUc2qLy4jB3hD7Z Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable I've discovered a repeatable problem with FreeBSD's UFS2 snapshots. If I create several snapshots, and then do heavy disk I/O on the original filesystem (deletions, creations, simple touches, etc.) I can cause the I/O system to crash. There is no kernel panic, and the machine still answers pings, but no disk I/O occurs. I can replicate this on a dual-processor beige-box system with a Mylex RAID controller and a RAID-5 set, and also on a dual-processor Dell Poweredge 2650 with a PERC 3/i RAID controller and a RAID-5 set and RAID-1 set. FreeBSD 5.4-RELEASE is installed on both systems, and SMP is enabled as well, with HTT disabled on the Poweredge. I have DDB compiled in, so I can get debug information but I don't know what to look for. --=20 -- Skylar Thompson (skylar@cs.earlham.edu) -- http://www.cs.earlham.edu/~skylar/ --7AUc2qLy4jB3hD7Z Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCvvHvsc4yyULgN4YRAp9YAKCpPZsj14OGuuvinJgbKnN7H6EDcQCfWEWZ 5kmdDFdtkqlqLrE9VIzCiP4= =eauT -----END PGP SIGNATURE----- --7AUc2qLy4jB3hD7Z--
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