Update the BUGS section of nfs(5).
Signed-off-by: Chuck Lever <[email protected]>
---
utils/mount/nfs.man | 51 +++++++++++++++++++++++++++++++++++++++++++--------
1 files changed, 43 insertions(+), 8 deletions(-)
diff --git a/utils/mount/nfs.man b/utils/mount/nfs.man
index b673cef..adc394e 100644
--- a/utils/mount/nfs.man
+++ b/utils/mount/nfs.man
@@ -1052,15 +1052,50 @@ in an environment that mixes POSIX ACLs and NFS version 4.
.TP 1.5i
.I /etc/fstab
file system table
+.SH BUGS
+The generic
+.B remount
+option is not fully supported.
+Generic options, such as
+.BR rw " and " ro
+can be modified using the
+.B remount
+option,
+but NFS-specific options are not all supported.
+The underlying transport or NFS version
+cannot be changed by a remount, for example.
+Performing a remount on an NFS file system mounted with the
+.B noac
+option may have unintended consequences.
+The
+.B noac
+option is a mixture of a generic option,
+.BR sync ,
+and an NFS-specific option
+.BR actimeo=0 .
+.P
+Before 2.4.7, the Linux NFS client did not support NFS over TCP.
+.P
+Before 2.4.20, the Linux NFS client used a heuristic
+to determine whether cached file data was still valid
+rather than using the standard close-to-open cache coherency method
+described above.
+.P
+Starting with 2.4.22, the Linux NFS client employs
+a Van Jacobsen-based RTT estimator to set RPC timeouts
+when using NFS over UDP.
+.P
+Before 2.6.0, the Linux NFS client did not support NFS version 4.
+.P
+Before 2.6.8, the Linux NFS client used only synchronous reads and writes
+when the
+.BR rsize " and " wsize
+settings were smaller than the system's page size.
+.P
+The Linux NFS client does not yet support
+certain optional features of the NFS version 4 protocol,
+such as security negotiation, server referrals, and named attributes.
.SH "SEE ALSO"
.BR fstab "(5), " mount "(8), " umount "(8), " exports (5)
.SH AUTHOR
"Rick Sladkey" <[email protected]>
-.SH BUGS
-.P
-Checking files on NFS filesystem referenced by file descriptors (i.e. the
-.BR fcntl
-and
-.BR ioctl
-families of functions) may lead to inconsistent result due to the lack of
-consistency check in kernel even if noac is used.
-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems? Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >> http://get.splunk.com/
_______________________________________________
NFS maillist - [email protected]
https://lists.sourceforge.net/lists/listinfo/nfs