svn commit: r284531 - head/sbin/umount
Rick Macklem
rmacklem at FreeBSD.org
Wed Jun 17 23:24:47 UTC 2015
Author: rmacklem
Date: Wed Jun 17 23:24:46 2015
New Revision: 284531
URL: https://svnweb.freebsd.org/changeset/base/284531
Log:
Document that a forced dismount of an NFSv3 mount when the
NLM (rpc.lockd) is running can crash the system.
Unfortunately this is not easy to fix, but I have left
PR#200585 open.
PR: 200585
MFC after: 3 days
Modified:
head/sbin/umount/umount.8
Modified: head/sbin/umount/umount.8
==============================================================================
--- head/sbin/umount/umount.8 Wed Jun 17 22:52:12 2015 (r284530)
+++ head/sbin/umount/umount.8 Wed Jun 17 23:24:46 2015 (r284531)
@@ -28,7 +28,7 @@
.\" @(#)umount.8 8.2 (Berkeley) 5/8/95
.\" $FreeBSD$
.\"
-.Dd November 22, 2014
+.Dd June 17, 2015
.Dt UMOUNT 8
.Os
.Sh NAME
@@ -81,6 +81,9 @@ The root file system cannot be forcibly
For NFS, a forced dismount can take up to 1 minute or more to
complete against an unresponsive server and may throw away
data not yet written to the server for this case.
+Also, doing a forced dismount of an NFSv3 mount when
+.Xr rpc.lockd 8
+is running is unsafe and can result in a crash.
.It Fl h Ar host
Only file systems mounted from the specified host will be
unmounted.
More information about the svn-src-all
mailing list