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| author | sjg <sjg@FreeBSD.org> | 2013-09-05 20:18:59 +0000 |
|---|---|---|
| committer | sjg <sjg@FreeBSD.org> | 2013-09-05 20:18:59 +0000 |
| commit | 62bb1062226d3ce6a2350808256a25508978352d (patch) | |
| tree | 22b131dceb13c3df96da594fbaadb693504797c7 /usr.sbin/nfsd | |
| parent | 72ab90509b3a51ab361bf710338f2ef44a4e360d (diff) | |
| parent | 04932445481c2cb89ff69a83b961bdef3d64757e (diff) | |
| download | FreeBSD-src-62bb1062226d3ce6a2350808256a25508978352d.zip FreeBSD-src-62bb1062226d3ce6a2350808256a25508978352d.tar.gz | |
Merge from head
Diffstat (limited to 'usr.sbin/nfsd')
| -rw-r--r-- | usr.sbin/nfsd/nfsv4.4 | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/usr.sbin/nfsd/nfsv4.4 b/usr.sbin/nfsd/nfsv4.4 index 679bb69..8d9bc80 100644 --- a/usr.sbin/nfsd/nfsv4.4 +++ b/usr.sbin/nfsd/nfsv4.4 @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd December 23, 2012 +.Dd July 1, 2013 .Dt NFSV4 4 .Os .Sh NAME @@ -233,6 +233,20 @@ plus set ``tcp'' and The .Xr nfsuserd 8 must be running, as above. +Also, since an +.Nm +mount uses the host uuid to identify the client uniquely to the server, +you cannot safely do an +.Nm +mount when +.sp +.Bd -literal -offset indent -compact +hostid_enable="NO" +.Ed +.sp +is set in +.Xr rc.conf 5 . +.sp If the .Nm server that is being mounted on supports delegations, you can start the @@ -287,6 +301,13 @@ and daemons at boot time via the ``nfsuserd_flags'' and ``nfscbd_flags'' .Xr rc.conf 5 variables. +.Pp +NFSv4 mount(s) against exported volume(s) on the same host are not recommended, +since this can result in a hung NFS server. +It occurs when an nfsd thread tries to do an NFSv4 VOP_RECLAIM()/Close RPC +as part of acquiring a new vnode. +If all other nfsd threads are blocked waiting for lock(s) held by this nfsd +thread, then there isn't an nfsd thread to service the Close RPC. .Sh FILES .Bl -tag -width /var/db/nfs-stablerestart.bak -compact .It Pa /var/db/nfs-stablerestart |
