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NFSv4.1: Try to deal with NFS4ERR_SEQ_MISORDERED.
If the server returns NFS4ERR_SEQ_MISORDERED, it could be a sign that the slot was retired at some point. Retry the attempt after reinitialising the slot sequence number to 1. Also add a handler for NFS4ERR_SEQ_FALSE_RETRY. Just bump the slot sequence number and retry... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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parent
65a0c14954
commit
e879444084
1 changed files with 19 additions and 5 deletions
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@ -467,11 +467,19 @@ static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *
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* The slot id we used was probably retired. Try again
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* using a different slot id.
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*/
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if (rpc_restart_call_prepare(task)) {
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task->tk_status = 0;
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ret = 0;
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}
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break;
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goto retry_nowait;
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case -NFS4ERR_SEQ_MISORDERED:
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/*
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* Could this slot have been previously retired?
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* If so, then the server may be expecting seq_nr = 1!
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*/
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if (slot->seq_nr == 1)
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break;
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slot->seq_nr = 1;
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goto retry_nowait;
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case -NFS4ERR_SEQ_FALSE_RETRY:
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++slot->seq_nr;
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goto retry_nowait;
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default:
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/* Just update the slot sequence no. */
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++slot->seq_nr;
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@ -481,6 +489,12 @@ static int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *
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dprintk("%s: Error %d free the slot \n", __func__, res->sr_status);
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nfs41_sequence_free_slot(res);
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return ret;
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retry_nowait:
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if (rpc_restart_call_prepare(task)) {
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task->tk_status = 0;
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ret = 0;
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}
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goto out;
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out_retry:
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if (!rpc_restart_call(task))
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goto out;
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