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| author | rmacklem <rmacklem@FreeBSD.org> | 2015-06-17 23:24:46 +0000 |
|---|---|---|
| committer | rmacklem <rmacklem@FreeBSD.org> | 2015-06-17 23:24:46 +0000 |
| commit | be596a353536ab64bc861846a598172257a2b89d (patch) | |
| tree | b50c1d8b5ca42245eacad91247abec226b65632c /sbin | |
| parent | 5b81a204332fac12893fc060fd17fce126f9df29 (diff) | |
| download | FreeBSD-src-be596a353536ab64bc861846a598172257a2b89d.zip FreeBSD-src-be596a353536ab64bc861846a598172257a2b89d.tar.gz | |
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
Diffstat (limited to 'sbin')
| -rw-r--r-- | sbin/umount/umount.8 | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sbin/umount/umount.8 b/sbin/umount/umount.8 index e62bcc5..2ddbf5a 100644 --- a/sbin/umount/umount.8 +++ b/sbin/umount/umount.8 @@ -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. |
