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| author | Andy Adamson <andros@netapp.com> | 2012-03-07 15:49:41 (GMT) |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-03-07 15:53:55 (GMT) |
| commit | 9cb8196839ab4ec87710526e9c43ac7f5dba69d3 (patch) | |
| tree | 97ea8225d7ea1b7ba45785f25d042a18263eaf8e | |
| parent | 4f1abd226d80ef763c50e3930b369b63dffbb312 (diff) | |
| download | linux-9cb8196839ab4ec87710526e9c43ac7f5dba69d3.tar.xz | |
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>
| -rw-r--r-- | fs/nfs/delegation.c | 1 | ||||
| -rw-r--r-- | fs/nfs/nfs4filelayout.c | 29 | ||||
| -rw-r--r-- | fs/nfs/nfs4state.c | 2 |
3 files changed, 31 insertions, 1 deletions
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 87f7544..97d5357 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -474,6 +474,7 @@ void nfs_remove_bad_delegation(struct inode *inode) nfs_free_delegation(delegation); } } +EXPORT_SYMBOL_GPL(nfs_remove_bad_delegation); /** * nfs_expire_all_delegation_types diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 47e8f34..b2d3bb5 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 */ diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 1dad5c5..a58d02a 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1072,6 +1072,7 @@ void nfs4_schedule_lease_recovery(struct nfs_client *clp) set_bit(NFS4CLNT_CHECK_LEASE, &clp->cl_state); nfs4_schedule_state_manager(clp); } +EXPORT_SYMBOL_GPL(nfs4_schedule_lease_recovery); void nfs4_schedule_path_down_recovery(struct nfs_client *clp) { @@ -1109,6 +1110,7 @@ void nfs4_schedule_stateid_recovery(const struct nfs_server *server, struct nfs4 nfs4_state_mark_reclaim_nograce(clp, state); nfs4_schedule_state_manager(clp); } +EXPORT_SYMBOL_GPL(nfs4_schedule_stateid_recovery); void nfs_inode_find_state_and_recover(struct inode *inode, const nfs4_stateid *stateid) |