interactive stop on boot

Grant Peel gpeel at
Fri Mar 14 17:17:16 UTC 2008

Yeah, what CHris said.

Also, there is an option you can put in fstab to allow the automount, and 
background the NFS mounts ... so that if the mount fails the boot will 
continue. Again, as mentioned, this will only work if the OS and your 
connection method (ssh daemon?) are not dependant on the NFS mounts.

Here is what my fstab looks like. Note line 6 that specifies the "-t=10,-b" 
options (to timeout the mount after 10 seconds and to background the nfs 

# Device                Mountpoint      FStype  Options         Dump 
/dev/da0s1b             none            swap    sw              0       0
/dev/da0s1a             /               ufs     rw              1       1
/dev/da0s1f             /home           ufs     userquota,rw    0       2
/dev/da0s1d             /usr            ufs     rw              2       2
/dev/da0s1e             /var            ufs     rw              2       2
nfsserver:/mnt          /mnt            nfs     -t=10,-b,rw     0       0


----- Original Message ----- 
From: "Christopher Sean Hilton" <chris at>
To: "Jason Barnes" <jason.w.barnes at>
Sent: Friday, March 14, 2008 12:03 PM
Subject: Re: interactive stop on boot

> On Mar 14, 2008, at 11:24 AM, Jason Barnes wrote:
>> Hi -- I'm running a "Tombstone" machine that's functioning as a
>> server.  The machine is located somewhere with a fast connection, and
>> not somewhere that I have easy access to.  As such, I want this
>> machine to do its best to boot up and get onto the network, no matter
>> what happens on boot, so that I have a chance to actually fix the
>> problem.
>> Lately when it boots it runs into an NFS mounting error, claiming that
>> some of my NFS-mounted drives have unexpected inconsistencies.  It
>> says "unexpected error - help!" and then quits to a /bin/sh
>> single-user-mode prompt.  As I am 10 miles away, this is decidedly
>> unhelpful.  I don't care if it can't mount some irrelevant drive or
>> not; I want it to boot up and ask me questions later.
>> Is there a way that I can set the machine to do its best to boot no
>> matter what it finds at boot time?  Thanks in advance for any help you
>> can provide,
> Depends on the whether or not the system needs something from the NFS 
> mount at boot time. If it doesn't then you would do well to use amd  (man 
> 8 amd) to handle the mount. The short of is that amd automates  the 
> process of mounting a filesystem by presenting a directory. When a 
> process requests a file within that directory amd performs the mount.  Amd 
> helps by deferring the mount until something actually needs  something 
> from the remote filesystem.
> Simpler still would be to change the mounts entry to noauto in /etc/ 
> fstab. However then you or someone else will have to perform the mount 
> when you need the filesystem.
> -- Chris
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