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| author | Rick Macklem <rmacklem@FreeBSD.org> | 2015-06-17 23:24:46 +0000 |
|---|---|---|
| committer | Rick Macklem <rmacklem@FreeBSD.org> | 2015-06-17 23:24:46 +0000 |
| commit | 1e68ee21e0d00b04be1f3271b40b6217c0915f38 (patch) | |
| tree | b50c1d8b5ca42245eacad91247abec226b65632c /sbin/umount | |
| parent | 093ebe1d284505f3f99c9376c43a80c30b2d8ea2 (diff) | |
| download | src-1e68ee21e0d00b04be1f3271b40b6217c0915f38.tar.gz src-1e68ee21e0d00b04be1f3271b40b6217c0915f38.zip | |
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
Notes
Notes:
svn path=/head/; revision=284531
Diffstat (limited to 'sbin/umount')
| -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 e62bcc5dad58..2ddbf5a07ce6 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. |