Date: Sun, 7 May 2017 23:50:24 +0200 From: Claude Buisson <clbuisson@orange.fr> To: Rick Macklem <rmacklem@uoguelph.ca>, FreeBSD Current <freebsd-current@freebsd.org> Cc: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: Recent FreeBSD, NFSv4 and /var/db/mounttab Message-ID: <17039eeb-fd0d-a0f7-19bf-48c75013f222@orange.fr> In-Reply-To: <YTXPR01MB018914B30689B00D1D9E7DBADDE90@YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM> References: <20c2baca-ba91-19b4-db95-5352b56019c1@orange.fr> <YTXPR01MB018915F50E09FC0DD8CF0214DD4D0@YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM> <YTXPR01MB018914B30689B00D1D9E7DBADDE90@YTXPR01MB0189.CANPRD01.PROD.OUTLOOK.COM>
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On 05/07/2017 21:09, Rick Macklem wrote: > Claude Buisson wrote: >> 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 ! > When I do an NFSv4 mount from a recent FreeBSD system, it does not use the > Mount protocol. I am not sure why your NFSv4 mounts are putting an entry in > mounttab, since that is done by mountd.c on the server and the client isn't even > contacting it? > This is really an long delayed answer !! 1) I am afraid of a confusion on your side between mounttab which is managed on the CLIENT, and mountdtab which is managed of the SERVER. 2) Since my first mail, I patched mount_nfs(4) (client side) not to write an entry in mounttab in the NFS4 case. But: 3) I no more use NFS4 and have switched back to NFS3, sa as to have on the servers a trace of the current active clients by virtue of the mount protocol :-) > rick Thanks for your interest Claude Buisson
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