Date: Sun, 10 Sep 2006 10:32:27 GMT From: Dominic Fandrey <lon_kamikaze@gmx.de> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/103089: [sbin/mount_nfs] introduce new option Message-ID: <200609101032.k8AAWRKc085566@www.freebsd.org> Resent-Message-ID: <200609101040.k8AAeNi8024558@freefall.freebsd.org>
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>Number: 103089
>Category: misc
>Synopsis: [sbin/mount_nfs] introduce new option
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Sun Sep 10 10:40:22 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator: Dominic Fandrey
>Release: Releng_6
>Organization:
private
>Environment:
FreeBSD mobileKamikaze.norad 6.1-STABLE FreeBSD 6.1-STABLE #0: Sat Sep 9 17:31:18 CEST 2006 root@homeKamikaze.norad:/usr/obj/usr/src/sys/TPR40-6 i386
>Description:
In environments where a successful mount is rather unlikely (such as on a laptop) the use of the -b option is quite frustrating, because a failed attempt takes quite some time.
As an example I've got 4 nfs mounts in my fstab (with the -b option) and it delays booting by ~2 minutes, when I'm not in my home network, because a connection attempt takes a remarkable amount of time. This is why I added the -B option. Instead of waiting for the connection to the server to fail, it instantly forks (unless not already forked, which might be the case if someone added -B several times).
I suppose with only slight changes the patch could be applied to mount_nfs4 as well.
>How-To-Repeat:
>Fix:
diff -uPr sbin/mount_nfs.orig/mount_nfs.8 sbin/mount_nfs/mount_nfs.8
--- sbin/mount_nfs.orig/mount_nfs.8 Sun Sep 10 12:05:33 2006
+++ sbin/mount_nfs/mount_nfs.8 Sun Sep 10 12:16:00 2006
@@ -163,6 +163,11 @@
Useful for
.Xr fstab 5 ,
where the file system mount is not critical to multiuser operation.
+.It Fl B
+Fork off a child immediately, even before the first attempt to contact the
+server. Useful for
+.Xr fstab 5 ,
+where notification about failiure is not desired.
.It Fl c
For UDP mount points, do not do a
.Xr connect 2 .
diff -uPr sbin/mount_nfs.orig/mount_nfs.c sbin/mount_nfs/mount_nfs.c
--- sbin/mount_nfs.orig/mount_nfs.c Sun Sep 10 12:05:33 2006
+++ sbin/mount_nfs/mount_nfs.c Sun Sep 10 12:05:02 2006
@@ -278,6 +278,14 @@
case 'b':
opflags |= BGRND;
break;
+ case 'B':
+ opflags |= BGRND;
+ if ((opflags & (BGRND | ISBGRND)) == BGRND) {
+ opflags |= ISBGRND;
+ if (daemon(0, 0) != 0)
+ err(1, "daemon");
+ }
+ break;
case 'c':
nfsargsp->flags |= NFSMNT_NOCONN;
break;
>Release-Note:
>Audit-Trail:
>Unformatted:
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