Re: [autofs] Re: VFS: Busy inodes after unmount on 2 way SMP

Re: [autofs] Re: VFS: Busy inodes after unmount on 2 way SMP

[Matt C]

Don't know if it helps, but we also run a few hundred autofs4 clients, 
with a mix of 2.4.21 and 2.4.18. The 2.4.21 machines are seeing quite a 
few of these messages, but not on the 2.4.18 machines. We haven't seen any 
of the oopses described below, though.

-matt

On Mon, 15 Sep 2003, Ion Badulescu wrote:

> On Mon, 15 Sep 2003, H. Peter Anvin wrote:
> 
> > Arun Sharma wrote:
> > >>
> > >> Oh yeah, easily. Kill the automounter while some things are mounted,
> > >> unmount everything by hand but do not rmdir the mountpoints. When you
> > >> unmount the autofs filesystem itself, you will get the self destruct
> > >> message.
> > > 
> > > Thanks. This reproduces the problem I'm chasing very well. I think this
> > > is clearly an unacceptable kernel bug.
> > > 
> > Indeed.  This is on autofs 3?
> 
> Both 3 and 4, at least as far as the "self-destruct" message goes.
> 
> Ion
> 
> 



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Re: [autofs] Re: VFS: Busy inodes after unmount on 2 way SMP

[Frank Cusack]

On Mon, Sep 15, 2003 at 06:34:33PM -0700, Matt C wrote:
> On Mon, 15 Sep 2003, Ion Badulescu wrote:
> > On Mon, 15 Sep 2003, H. Peter Anvin wrote:
> > > Arun Sharma wrote:
> > > >>
> > > >> Oh yeah, easily. Kill the automounter while some things are mounted,
> > > >> unmount everything by hand but do not rmdir the mountpoints. When you
> > > >> unmount the autofs filesystem itself, you will get the self destruct
> > > >> message.
> > > > 
> > > > Thanks. This reproduces the problem I'm chasing very well. I think this
> > > > is clearly an unacceptable kernel bug.
> > > > 
> > > Indeed.  This is on autofs 3?
> > 
> > Both 3 and 4, at least as far as the "self-destruct" message goes.
>
> Don't know if it helps, but we also run a few hundred autofs4 clients, 
> with a mix of 2.4.21 and 2.4.18. The 2.4.21 machines are seeing quite a 
> few of these messages, but not on the 2.4.18 machines. We haven't seen any 
> of the oopses described below, though.

Same here, 2.4.22, autofs 3 and 4.  I'll be playing with 2.6.0 next week.

I haven't tried to reproduce it with your method, but I do see the bug;
no oops though.

/fc


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