Date: Wed, 12 Mar 2003 15:40:05 -0500 (EST) From: Mikhail Teterin <mi@corbulon.video-collage.com> To: current@FreeBSD.org Subject: problem with a file-backed md Message-ID: <200303122040.h2CKe6lH000843@corbulon.video-collage.com>
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Hello! I have a nasty problem with a file-backed md. The file is the Windows' swap file residing on a msdosfs part of the drive. First I tried to just swapon to the md: tmp=`mdconfig -a -t vnode -f /W/pagefile.sys` swapon $tmp But random big-memory programs were hanging. At that stage, even the simple sync(8) was hanging and reboot would report that "some processes would not die". So I switched to using that chunk of disk as: newfs /dev/$tmp mount /dev/$tmp /scratch This seems to work initially -- the file system is created at boot. I was able to untar a sizable tarball onto it. I opened a file under /scratch in vi and was able to browse it, but on trying to :q, the editor hung and is still hung as I type this. An attempt to `umount /scratch' is currently hung as: MWCHAN STAT `wdrain D' while a subsequent forcefull `umount -f /scratch' looks slightly different: MWCHAN STAT `devfs D' Attempt to delete the md fails with EBUSY. A big program (kmail) is now hung too, although it is not supposed to look at /scratch: MWCHAN STAT `wdrain D' -- I'm afraid all disk-access is now busted and I'm able to type this only because with my 1Gb or RAM most of the stuff is entirely in cache. The -current kernel is built from Mar 6 sources, but I first observed the problem with an earlier kernel -- a few weeks before. Any hope? Thanks! -mi To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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