Slackware does not unmount NFS before going singleuser

Yalla-One · 12-11-2005, 08:38 AM

Shouldn't slackware umount all NFS mounted disks before entering single-user? It already kills the RPC daemons required for proper NFS operation, thus causing massive errors when going from runlevel 3/4 to runlevel 1.

I don't know if there's such a thing as a "standard behaviour" associated with entering runlevel 1/single user mode, but this seems to make good sense anyway.

Does anyone have any views on this?

-Y1

trickykid · 12-11-2005, 09:39 AM

Quote:

Originally Posted by Yalla-One

Shouldn't slackware umount all NFS mounted disks before entering single-user? It already kills the RPC daemons required for proper NFS operation, thus causing massive errors when going from runlevel 3/4 to runlevel 1.

I don't know if there's such a thing as a "standard behaviour" associated with entering runlevel 1/single user mode, but this seems to make good sense anyway.

Does anyone have any views on this?

-Y1

By default the rc.S for single user mode appears to be mainly for single user startups at boot time. If you're just going directly from runlevel 3 or 4 to 1, just add something like this to your rc.S script:

Code:

echo "Unmounting remote NFS shares if they are mounted:"
if cat /etc/mtab | grep -w nfs 1> /dev/null 2> /dev/null ; then
    /sbin/umount -a -r -t nfs
fi

Which will unmount any NFS shares..

Yalla-One · 12-11-2005, 09:46 AM

Thanks much - looks perfect!

Wouldn't it be a good idea to have this added to Slackware anyhow - the time penalty associated on direct booting into single-user is near-nil, and it's quite common to enter run-level 1 for maintenance before taking the system back to 3 or 4?

Would you mind emailing your excellent addition to the proud father Volkerding for general inclusion ?

-Y1

trickykid · 12-11-2005, 10:00 AM

Quote:

Originally Posted by Yalla-One

Thanks much - looks perfect!

Wouldn't it be a good idea to have this added to Slackware anyhow - the time penalty associated on direct booting into single-user is near-nil, and it's quite common to enter run-level 1 for maintenance before taking the system back to 3 or 4?

Would you mind emailing your excellent addition to the proud father Volkerding for general inclusion ?

-Y1

Actually looking at it now, I forgot that single user mode uses rc.K where the few lines I posted above would be more suitable. And right at the top, it actually states that filesystems are kept mounted.. hmm.. perhaps a clean umount would do it some good when entering runlevel 1.

Yalla-One · 12-11-2005, 10:10 AM

I noticed it stated that it kept the filesystems mounted, but I assumed this refers to the local filesystems, which makes sense as one would need them mounted to be able to get any work done while in singleuser.
Keeping NFS shares mounted however does not make any sense, as they cannot be accessed anyway when the RPC portmapper is taken down (as it should), and thus leaving the NFS shares without unmounting them will only cause concern and problems rather than offer any benefit.

However, I'm no expert, which is why I asked

trickykid · 12-11-2005, 10:19 AM

Quote:

Originally Posted by Yalla-One

I noticed it stated that it kept the filesystems mounted, but I assumed this refers to the local filesystems, which makes sense as one would need them mounted to be able to get any work done while in singleuser.
Keeping NFS shares mounted however does not make any sense, as they cannot be accessed anyway when the RPC portmapper is taken down (as it should), and thus leaving the NFS shares without unmounting them will only cause concern and problems rather than offer any benefit.

However, I'm no expert, which is why I asked

I just finished emailing Patrick the possible addition to the rc.K script to umount any remote filesystems.

We'll see what happens, maybe I'll get my name in the rc.K script if it's added..