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| author |   Bryan Schumaker <bjschuma@netapp.com> | 2012-09-26 15:25:52 -0400 |
|---|---|---|
| committer |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-10-01 15:17:25 -0700 |
| commit | 6938867edba929a65a167a97581231e76aeb10b4 (patch) | |
| tree | 9f1fcee1c9dc22515d335c69db0f01e5eb9f4bb1 /fs/nfs/netns.h | |
| parent | NFS: Always use the open stateid when checking for expired opens (diff) | |
| download | wireguard-linux-6938867edba929a65a167a97581231e76aeb10b4.tar.xz wireguard-linux-6938867edba929a65a167a97581231e76aeb10b4.zip | |
NFS: Remove bad delegations during open recovery
I put the client into an open recovery loop by:
Client: Open file
read half
Server: Expire client (echo 0 > /sys/kernel/debug/nfsd/forget_clients)
Client: Drop vm cache (echo 3 > /proc/sys/vm/drop_caches)
finish reading file
This causes a loop because the client never updates the nfs4_state after
discovering that the delegation is invalid. This means it will keep
trying to read using the bad delegation rather than attempting to re-open
the file.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
CC: stable@vger.kernel.org [3.4+]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/netns.h')
0 files changed, 0 insertions, 0 deletions