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| author | Andy Adamson <andros@netapp.com> | 2012-03-07 16:49:41 +0100 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-03-07 16:53:55 +0100 |
| commit | 9cb8196839ab4ec87710526e9c43ac7f5dba69d3 (patch) | |
| tree | 97ea8225d7ea1b7ba45785f25d042a18263eaf8e /fs/nfs/nfs4filelayout.c | |
| parent | NFS: add fh_crc to debug output (diff) | |
| download | linux-9cb8196839ab4ec87710526e9c43ac7f5dba69d3.tar.xz linux-9cb8196839ab4ec87710526e9c43ac7f5dba69d3.zip | |
NFSv4.1 handle DS stateid errors
Handle DS READ and WRITE stateid errors by recovering the stateid on the MDS.
NFS4ERR_OLD_STATEID is ignored as the client always sends a
state sequenceid of zero for DS READ and WRITE stateids.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4filelayout.c')
| -rw-r--r-- | fs/nfs/nfs4filelayout.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 47e8f3435d38..b2d3bb5971bb 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -36,6 +36,7 @@ #include <linux/sunrpc/metrics.h> #include "internal.h" +#include "delegation.h" #include "nfs4filelayout.h" #define NFSDBG_FACILITY NFSDBG_PNFS_LD @@ -86,12 +87,31 @@ static int filelayout_async_handle_error(struct rpc_task *task, struct nfs_client *clp, int *reset) { + struct nfs_server *mds_server = NFS_SERVER(state->inode); + struct nfs_client *mds_client = mds_server->nfs_client; + if (task->tk_status >= 0) return 0; - *reset = 0; switch (task->tk_status) { + /* MDS state errors */ + case -NFS4ERR_DELEG_REVOKED: + case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_BAD_STATEID: + if (state != NULL) + nfs_remove_bad_delegation(state->inode); + case -NFS4ERR_OPENMODE: + if (state == NULL) + break; + nfs4_schedule_stateid_recovery(mds_server, state); + goto wait_on_recovery; + case -NFS4ERR_EXPIRED: + if (state != NULL) + nfs4_schedule_stateid_recovery(mds_server, state); + nfs4_schedule_lease_recovery(mds_client); + goto wait_on_recovery; + /* DS session errors */ case -NFS4ERR_BADSESSION: case -NFS4ERR_BADSLOT: case -NFS4ERR_BAD_HIGH_SLOT: @@ -117,8 +137,15 @@ static int filelayout_async_handle_error(struct rpc_task *task, *reset = 1; break; } +out: task->tk_status = 0; return -EAGAIN; +wait_on_recovery: + rpc_sleep_on(&mds_client->cl_rpcwaitq, task, NULL); + if (test_bit(NFS4CLNT_MANAGER_RUNNING, &mds_client->cl_state) == 0) + rpc_wake_up_queued_task(&mds_client->cl_rpcwaitq, task); + goto out; + } /* NFS_PROTO call done callback routines */ |