Date: Thu, 28 Oct 2004 19:53:47 +0100 From: Stefek Zaba <s-freebsd-qns-oct04@zaba.com> To: freebsd-questions@freebsd.org Cc: stefek.zaba@hp.com Subject: shutdown(8): supposed to dismount all FSes? Message-ID: <20041028185347.GA1917@zaba-s-2.hpl.hp.com>
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Dumb question, which "man 8 shutdown" and cousins (halt, reboot) don't seem to answer: is incanting "shutdown" expected to unmount all mounted filesystems, even those mounted "interactively" (i.e. not listed in /etc/fstab)? I ask because I managed to embarass myself during a trial install of FreeBSDS-5.3RC1 (my first outing with FreeBSD, though I've too many years with HP-UX, Debian, RedHat, and recently OpenBSD). I'd mounted an ext3 partition for a quick bit of editing (that's where my grub config files were), using the built-in ext2fs. In cavalier mode, once I'd made the edits I wanted, I incanted "shutdown -r now", as you do. In its last dying moments, the FreeBSD kernel spat out a message along the lines of "flushing vnodes: 1 1 1 ... 1 1 1 giving up on 1 buffer" (sorry, I didn't write the msg down, and am reconstructing from a dangerous combination of memory and Googling for 'the sort of thing FreeBSD says as it shuts down' ;-). It seems reprodicible - when I umount'ed the ext3 partition manually another time, no buffers were Given Up on, and the next time I forgot I hosed myself again. (Happily the Fedora fsck didn't seem to think the partition was beyond repair ;-). If this is simply luser error, tell me so and I'll go away a sadder if not a wiser man. If, though, the intention is that "shutdown" should cleanly dismount all FSen, regardless of their presence in /etc/fstab, tell me so and I'll spend a little time (but prolly not till next week; apologies) characterising the circumstances more closely. (E.g.: I note from Googling around that there was a reported bug in the same vague area when a read-only floppy was mounted; I may well have had a CD-ROM mounted at the same time, which is inherently read-only (d'oh). But I thought I'd better ask first what the shutdown behaviour is *intended* to be...) Thanks, Stefek
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