[Lustre-discuss] Lustre attribute caching?

[Daniel Kobras]

Hi!

On Mon, Apr 27, 2009 at 01:29:20AM -0600, Andreas Dilger wrote:
> Lustre will cache negative dentries as long as the directory is not
> modified.  If the directory has a new file created or an existing
> one deleted then the negative dentries, along with the rest of the
> readdir data is removed from all client caches, though the individual
> inodes can still live in the client cache as they have their own locks.

Interesting. Thanks for the info! This makes me wonder how Lustre copes
with temporary network outages in this case. If the client drops off the
net, the server cannot invalidate the caches. Does the client notice the
communication problem, or could it briefly serve stale data?

Regards,

Daniel.