shutdown(8): supposed to dismount all FSes?
Kevin D. Kinsey, DaleCo, S.P.
kdk at daleco.biz
Fri Oct 29 10:23:49 PDT 2004
Charles Swiger wrote:
> On Oct 29, 2004, at 7:53 AM, Stefek Zaba wrote:
>> Chuck Swiger wrote:
>>> ...I recall that there are some issues handling ext2fs filesystems
>>> cleanly during the shutdown process, which tend to cause them to not
>>> be unmounted properly. It's considered a bug.
>> Thanks, Chuck. When I tried searching the PRs for this, I came up
>> blank; but your reply caused me to search harder, and indeed this is
>> a dup of 'PR kern/56675: Syncer "giving up" on buffers and ext2
>> which is still Open, reported 10sep03. My experience suggests it's
>> still a problem with 5.3-RC1.
> You're certainly welcome, and I'm pleased that my memory was working
> well enough to be helpful. :-)
>> Obviously, on a "production" FreeBSD system, this bug is of minor
>> relevance, as you'll be running UFS throughouth. But for the
>> multibooters among us, who are looking (say) to straddle the Linux
>> and BSD worlds, being able to mount the "old" ext2/ext3 partitions
>> routinely is a Good Thing in easing the transition; so for such users
>> the bug is more important.
> You might find that unmounting the ext2/ext3 filesystem by hand before
> rebooting is an adequate workaround, since that ought to leave the
> filesystem in a clean state.
Hmm, hate to come into this late, and perhaps with no good reason, but I
experienced this recently with a 200GB **ufs** volume:
FreeBSD archangel.daleco.biz 5.3-RC1 FreeBSD 5.3-RC1 #0: Wed Oct 20
10:10:40 CDT 2004
root at archangel.daleco.biz:/usr/obj/usr/src/sys/GENERIC i386
/dev/ad0s1a on / (ufs, local)
devfs on /dev (devfs, local)
/dev/ad0s1e on /usr (ufs, local, soft-updates)
/dev/ad0s1d on /var (ufs, local, soft-updates)
/dev/ad1s1d on /backup (ufs, local, soft-updates)
$sudo tail /var/log/dmesg.today
Timecounter "TSC" frequency 2404108844 Hz quality 800
Timecounters tick every 1.000 msec
ipfw2 initialized, divert enabled, rule-based forwarding disabled,
default to deny, logging disabled
ad0: 38166MB <ST340014A/3.06> [77545/16/63] at ata0-master UDMA100
ad1: 190782MB <WDC WD2000JB-00GVA0/08.02D08> [387621/16/63] at
Mounting root from ufs:/dev/ad0s1a
WARNING: /backup was not properly dismounted
I rebooted the box via gdm on :0:0 (ttyv0) yesterday after viewing
the initial posts of this thread.
If there is a chance I'm doing something wrong, I'd appreciate
someone with knowledge letting me know ... OTOH, if there is
a bug in 5.3 that's not been fixed (I currently am browing the
CVS logs at freebsd.org, but hardly know where to look on this
issue) related to **ufs**, perhaps we ought to ring a bell somewhere?
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