Date: Fri, 7 Nov 2008 11:21:50 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: freebsd-geom@freebsd.org Subject: RW and RO semantic and unable to umount a partition? Message-ID: <20081107192150.GA3007@troutmask.apl.washington.edu>
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So, I may have done something in the category of "Don't do that!". On node n19, I export /dev/ad4s1e and combine it into a mirror on node n18 with n18's /dev/ad4s1e. On n18 I have /dev/mirror/data, and I've successfully mounted /dev/mirror/data: n18:root[32] mount /dev/mirror/data /data Now, I tried the the following: On n18, I created /etc/gg.exports n18:root[33] cat /etc/gg.exports 192.168.0.17 RW /dev/mirror/data n18:root[34] ggated -v On node n17 (yes, a third system). I do n17:root[08] ggatec create -o rw 192.168.0.18 /dev/mirror/data The above command does not create /dev/ggate0. So, I tried ggatec create -o ro 192.168.0.18 /dev/mirror/data This created the /dev/ggate0 device. Now, the interesting part n17:root[10] mount /dev/ggate0 /mnt n17:root[11] ls /mnt .snap/ fcurra/ kargl/ n17:root[12] umount /mnt umount: unmount of /mnt failed: Operation not permitted n17:root[13] umount -f /mnt umount: unmount of /mnt failed: Operation not permitted Three questions. Why is RW not permitted? Why does umount fail? How the heck to I force umount or the unmounting of /mnt? -- Steve
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