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| author | Andy Adamson <andros@netapp.com> | 2011-05-03 13:43:03 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-05-11 14:01:33 -0400 |
| commit | a8a4ae3a899a6c0b4771cc57884800d8b76a6996 (patch) | |
| tree | 762fa0cc26480ea302d1ade0a03f222fae958565 /fs/nfs | |
| parent | 9f381a61f58bb6487c93ce2233bb9992f8ea9211 (diff) | |
| download | linux-a8a4ae3a899a6c0b4771cc57884800d8b76a6996.tar.gz linux-a8a4ae3a899a6c0b4771cc57884800d8b76a6996.tar.bz2 linux-a8a4ae3a899a6c0b4771cc57884800d8b76a6996.zip | |
NFSv41: Resend on NFS4ERR_RETRY_UNCACHED_REP
Free the slot and resend the RPC with new session <slot#,seq#>.
For nfs4_async_handle_error, return -EAGAIN and set the task->tk_status to 0
to restart the async rpc in the rpc_restart_call_prepare state which resets
the slot.
For nfs4_handle_exception, retrying a call that uses nfs4_call_sync will
reset the slot via nfs41_call_sync_prepare.
For open/close/lock/locku/delegreturn/layoutcommit/unlink/rename/write
cachethis is true, so these operations will not trigger an
NFS4ERR_RETRY_UNCACHED_REP.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/nfs4filelayout.c | 2 | ||||
| -rw-r--r-- | fs/nfs/nfs4proc.c | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 6f8192f4cfc7..7841ea603c91 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -117,6 +117,8 @@ static int filelayout_async_handle_error(struct rpc_task *task, case -EKEYEXPIRED: rpc_delay(task, FILELAYOUT_POLL_RETRY_MAX); break; + case -NFS4ERR_RETRY_UNCACHED_REP: + break; default: dprintk("%s DS error. Retry through MDS %d\n", __func__, task->tk_status); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 69c0f3c5ee7a..cf1b339c3937 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -300,6 +300,7 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc ret = nfs4_delay(server->client, &exception->timeout); if (ret != 0) break; + case -NFS4ERR_RETRY_UNCACHED_REP: case -NFS4ERR_OLD_STATEID: exception->retry = 1; break; @@ -3695,6 +3696,7 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, rpc_delay(task, NFS4_POLL_RETRY_MAX); task->tk_status = 0; return -EAGAIN; + case -NFS4ERR_RETRY_UNCACHED_REP: case -NFS4ERR_OLD_STATEID: task->tk_status = 0; return -EAGAIN; @@ -4844,6 +4846,8 @@ static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status); rpc_delay(task, NFS4_POLL_RETRY_MIN); task->tk_status = 0; + /* fall through */ + case -NFS4ERR_RETRY_UNCACHED_REP: nfs_restart_rpc(task, data->clp); return; } @@ -5479,6 +5483,8 @@ static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nf break; case -NFS4ERR_DELAY: rpc_delay(task, NFS4_POLL_RETRY_MAX); + /* fall through */ + case -NFS4ERR_RETRY_UNCACHED_REP: return -EAGAIN; default: nfs4_schedule_lease_recovery(clp); |