Rob,
   this is neither a fix or a reason.  But it might enable you to
"fix" the situation without a reboot.  It sounds like what
happened was that samba was desperately trying to access a
non-existent share and took up all of your CPU cycles, thereby
fuzzing up your DHCPD.  What I would do is. 

1.  touch or otherwise recreate the share/directory that was
removed so that samba can find something. 

2.  Umount the share

3.  remove it from being automounted if that is being done.

4. restart Samba

5. Make sure it didn't try and remount it again.

6. Remove the share/directory from the other box.

This isn't a fix but a work around for keeping your system
running.  Then I'd go to the Samba site and report this as a bug
with as much detail as you have provided here.  (Maybe include
Samba version etc.)  It's definitely not catching an error and
putting itself into a loop of some kind.  

James


On Sun, 28 Jul 2002 23:09:16 -0400
Rob Gillen <[EMAIL PROTECTED]> wrote:

> I've seen a problem for many different versions (latest 8.2) of
> Mandrake with Samba before, and I may have even inquired about
> it before.  Whether it is a problem with Samba I have no idea,
> but I suspect not.  I'm trying to get some info/advice about
> what might be potentially the problem before going to Samba
> mailing lists to query them.
> 
> Some of you might already be familiar with the strange way that
> Linux will often disallow umount-ing or listing directory
> contents of a mounted smb share, returning the error text,
> "Input/output error."  I believe this error happens when a smb
> share is mounted, then that remote share is removed.  This is a
> seriously annoying problem, because restarting Samba does not
> solve the problem, nor does changing runlevels.  Which is why I
> think it may be a kernel-level problem.  I have tried changing
> the runlevel to [S]ingle level user, which is running pretty
> much nothing save kernel processes and a simple shell.  At this
> level, a 'mount' command still shows the shares to be mounted,
> and also at this level it is still impossible to umount them. 
> The only solution that I have found so far is rebooting, which I
> think is an unacceptable way to handle such a problem.
> 
> Now the interesting part.  During the time that I could not
> remove the unmountable mounted smb shares, the dhcpd daemon also
> seemed to start malfunctioning.  On the Mandrake box, everything
> seemed fine (that is, I restarted the dhcpd daemon which had no
> complaints during the restart).  But none of the other machines
> that get served on the network from it were getting addresses. 
> Unfortunately, I wasn't able to sniff packets, so I don't know
> what kind of communication (or lack thereof) was occurring.  It
> was a frustrating exercise trying to figure out why my other
> boxes were not getting addresses.  Strangely enough, when I
> rebooted the Mandrake box again, everything worked as normal --
> the other boxes got their IP addresses fine.
> 
> I don't know for sure if the dhcpd thing was related to the smb
> mount problem, but I'll try to repeat the problem and see if it
> recurs.  If anybody has seen the same problem or something
> similar, I would appreciate it if you could share how you
> resolved it.
> 
> Thanks,
> Rob
> 
> 
> 

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