Date: Wed, 1 Feb 2017 15:23:49 +0100 From: Claude Buisson <clbuisson@orange.fr> To: FreeBSD Current <freebsd-current@freebsd.org> Cc: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Recent FreeBSD, NFSv4 and /var/db/mounttab Message-ID: <20c2baca-ba91-19b4-db95-5352b56019c1@orange.fr>
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Hi, 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 rpc.umntall(8). 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, Claude Buisson
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