Date: Mon, 19 Jan 2004 02:22:31 +0100 From: Martin Matuska <martin@tradex.sk> To: freebsd-bugs@FreeBSD.org Subject: vnode-backed md hangs on coyping larger files Message-ID: <400B3157.7080105@tradex.sk>
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I am using FreeBSD-Current (post 5.2-RELEASE) and have created a vnode backed vn using these commands: mdconfig -a -t vnode -s 8G -f somebackingfile -u 0 (I tried 4G and 2G, too) bsdlabel -w md0 auto newfs md0c mount /dev/md0c /mnt Then I started copying files or doing a make installworld DESTDIR=/mnt from /usr/src and md hangs after some time copying. The md device and all processes accessing it cannot be accessed, only a hardware reset is possible to survive, reboot command doesn't work, too. I was able to reproduce this system on various system configurations (all i386, with up to 2GB memory with AMD K6-3, Athlon or Intel P4 processors), so it doesnt seem to be caused by my system configuration. I am using a clean FreeBSD install. It does not depend on mdconfig flags or if system is mounted asynchronously/synchronously, too, tried to turn off clustering, make mount synchronous, no help. This problem does not occur with FreeBSD 4 vn driver.
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