Date: Sun, 27 Aug 2000 01:13:57 -0500 (CDT) From: Mike Meyer <mwm@mired.org> To: Greg Lehey <grog@lemis.com> Cc: questions@freebsd.org Subject: Re: read only / filesystem Message-ID: <14760.45477.402050.39137@guru.mired.org> In-Reply-To: <20000827135500.A88160@wantadilla.lemis.com> References: <78875170@toto.iv> <14760.37457.359972.176638@guru.mired.org> <20000827135500.A88160@wantadilla.lemis.com>
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Greg Lehey writes: > On Saturday, 26 August 2000 at 23:00:17 -0500, Mike Meyer wrote: > > Greg Lehey writes: > >> On Thursday, 24 August 2000 at 23:49:17 -0700, R Joseph Wright wrote: > >>> Or is it easy enough to simply remount / rw when changes to /etc are > >>> needed? > >> You can do this, but you can't go back to an ro mount. > > Uh - why not? > It's not reliable. There are some problems with dirty buffers when > you make the file system read-only again. I forget whether it's data > corruption or a panic, but the only safe way to do this is to umount > the file system and remount it r/o, obviously not an option here. Sounds like an OS bug. The mount system call should make sure the file system is in sync before doing the udpate mount. You could, of course, do the sync's by hand until that happens. <mike To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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