On Wed, 2012-04-04 at 16:22 -0400, andros@xxxxxxxxxx wrote:
> From: Andy Adamson <andros@xxxxxxxxxx>
>
> The "invalid layout" class of errors is handled by destroying the layout and
> getting a new layout from the server. Currently, the layout must be
> destroyed before a new layout can be obtained.
>
> This means that all references (e.g.lsegs) to the "to be destroyed" layout
> header must be dropped before it can be destroyed. This in turn means waiting
> for all in flight RPC's using the old layout as well as draining the data
> server session slot table wait queue.
>
> Set the NFS_LAYOUT_INVALID flag to redirect I/O to the MDS while waiting for
> the old layout to be destroyed.
>
Is this patch still of interest? it doesn't seem to apply now that I've
added your quick failover patches.
--
Trond Myklebust
Linux NFS client maintainer
NetApp
Trond.Myklebust@xxxxxxxxxx
www.netapp.com
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