On Mon, 2008-07-21 at 12:39 +0800, Ian Kent wrote:
> On Sun, 2008-07-20 at 20:41 -0700, Chris Walker wrote:
> > From jimc [07/20 15:31]:
> > > Actually, only the sysop knows which is more important: doing the mount 
> > > storm to respond to stat() or statfs(), or avoiding the storm.
> > 
> > Agreed. In our case, we have 'heavily discouraged' use of /net on our
> > big servers and we would prefer that statfs()/stat() waited for the
> > automount to complete.
> 
> Just to be absolutely clear.
> 
> The "browse" or "--ghost option isn't being used, in oder to avoid mount
> storms, but we still see stat(2) and statfs(2) (et. al.) not wait for a
> mount to complete.
> 
> Is that right?
> Is anyone in a position to test a kernel patch?

We could add a third case to the description of the recently posted
"[autofs] [PATCH 3/7] autofs4 - fix pending checks" patch but it's
already been posted.

This can also happen via ->lookup() when only the LOOKUP_FOLLOW flag is
present, as is the case for stat(2) and statfs(2) and the like.

Ian


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