[src/trunk]: src/sbin/newfs Add a BUGS section describing that async mounts a...

[wiz <wiz%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ef3e037e03e8
branches:  trunk
changeset: 540687:ef3e037e03e8
user:      wiz <wiz%NetBSD.org@localhost>
date:      Sat Dec 21 20:33:35 2002 +0000

description:
Add a BUGS section describing that async mounts are currently disabled,
and explaining the reason. From Julio Merino.

diffstat:

 sbin/newfs/mount_mfs.8 |  11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diffs (22 lines):

diff -r 5ac4f59fc1a0 -r ef3e037e03e8 sbin/newfs/mount_mfs.8
--- a/sbin/newfs/mount_mfs.8    Sat Dec 21 16:43:33 2002 +0000
+++ b/sbin/newfs/mount_mfs.8    Sat Dec 21 20:33:35 2002 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: mount_mfs.8,v 1.6 2002/10/01 13:40:46 wiz Exp $
+.\"    $NetBSD: mount_mfs.8,v 1.7 2002/12/21 20:33:35 wiz Exp $
 .\"
 .\" Copyright (c) 1983, 1987, 1991, 1993, 1994
 .\"    The Regents of the University of California.  All rights reserved.
@@ -253,3 +253,12 @@
 .Nm
 command appeared in
 .Bx 4.2 .
+.Sh BUGS
+The
+.Cm async
+.Xr mount 8
+option is currently disabled in this file system because it causes
+hangs when writing lots of data.
+The problem is that MFS needs to allocate pages to clean pages, so if
+it waits until the last minute to clean pages then there may not be
+any of them available to do the cleaning.