Recent FreeBSD, NFSv4 and /var/db/mounttab
clbuisson at orange.fr
Wed Feb 1 14:31:30 UTC 2017
Last month, I started switching all my systems (stable/9, stable/10,
stable/11 and current) to NFSv4, and I found that:
on current (svn 312652) an entry is added to /var/db/mounttab by
mount_nfs(8), but not suppressed by umount(8). It can be suppressed by
The same anomaly appears on stable/11 after upgrading to svn 312950.
It is relatively easy to trace this anomaly to r308871 on current and
its MFHs (r309517 for stable/11).
Patching sbin/umount/umount.c to restore the RPC call for NFSv4 makes
umount(8) suppress the mounttab entry as before.
I do not know what is the proper solution, as suppressing the
modification of mounttab by mount_nfs(8) for NFSv4 could be an (more
complicated) alternative !
Thanks for your attention,
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