d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Document that a forced dismount of an NFSv3 mount when the

Browse Source 
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
This commit is contained in:
rmacklem 2015-06-17 23:24:46 +00:00
parent 5b81a20433
commit be596a3535
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sbin/umount/umount.8
View File

@ -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 unmounted.
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.