Kris Kennaway wrote:
Darren Pilgrim wrote:
I'm unable to unmount an idle filesystem (or even drop it to
read-only):

# mount
/dev/da0s1a on / (ufs, local, noatime)
devfs on /dev (devfs, local)
/dev/da0s1d on /var (ufs, local, noatime, soft-updates)
/dev/da0s1e on /usr (ufs, local, noatime, soft-updates)
/dev/da0s1fp1 on /usr/obj (ufs, asynchronous, local, noatime)
/dev/da0s1fp2 on /usr/ports (ufs, local, soft-updates)
/dev/da0s1fp3 on /usr/src (ufs, local, soft-updates)
/dev/da0s2d on /data (ufs, local, noatime, soft-updates)

# fstat -f /usr/ports
USER     CMD          PID   FD MOUNT      INUM MODE         SZ|DV R/W

# umount /usr/ports
umount: unmount of /usr/ports failed: Device busy

# umount -f /usr/ports
umount: unmount of /usr/ports failed: Device busy

# mount -o ro /usr/ports
mount: /dev/da0s1fp2: Operation not permitted

# uname -r
6.2-RELEASE-p8

Strange, can you break to DDB and do 'show lockedvnods'?

I don't have the necessary options compiled into the kernel. I'll build a kernel with the KDB and DDB options and hope the problem recurs.
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