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NFSv4: Fail I/O if the state recovery fails irrevocably

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If state recovery fails with an ESTALE or a ENOENT, then we shouldn't
keep retrying. Instead, mark the stateid as being invalid and
fail the I/O with an EIO error.
For other operations such as POSIX and BSD file locking, truncate
etc, fail with an EBADF to indicate that this file descriptor is no
longer valid.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2013-03-14 16:57:48 -04:00
parent 3ed5e2a2c3
commit 5d422301f9
5 changed files with 61 additions and 17 deletions
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37
fs/nfs/nfs4proc.c
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@@ -295,7 +295,9 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc
}
if (state == NULL)
break;
nfs4_schedule_stateid_recovery(server, state);
ret = nfs4_schedule_stateid_recovery(server, state);
if (ret < 0)
break;
goto wait_on_recovery;
case -NFS4ERR_DELEG_REVOKED:
case -NFS4ERR_ADMIN_REVOKED:
@@ -303,11 +305,16 @@ static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struc
if (state == NULL)
break;
nfs_remove_bad_delegation(state->inode);
nfs4_schedule_stateid_recovery(server, state);
ret = nfs4_schedule_stateid_recovery(server, state);
if (ret < 0)
break;
goto wait_on_recovery;
case -NFS4ERR_EXPIRED:
if (state != NULL)
nfs4_schedule_stateid_recovery(server, state);
if (state != NULL) {
ret = nfs4_schedule_stateid_recovery(server, state);
if (ret < 0)
break;
}
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_STALE_CLIENTID:
nfs4_schedule_lease_recovery(clp);
@@ -2053,7 +2060,7 @@ static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
nfs_fattr_init(fattr);
if (state != NULL) {
if (state != NULL && nfs4_valid_open_stateid(state)) {
struct nfs_lockowner lockowner = {
.l_owner = current->files,
.l_pid = current->tgid,
@@ -2201,6 +2208,8 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
calldata->arg.fmode &= ~FMODE_WRITE;
}
}
if (!nfs4_valid_open_stateid(state))
call_close = 0;
spin_unlock(&state->owner->so_lock);
if (!call_close) {
@@ -3980,11 +3989,14 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
case -NFS4ERR_OPENMODE:
if (state == NULL)
break;
nfs4_schedule_stateid_recovery(server, state);
if (nfs4_schedule_stateid_recovery(server, state) < 0)
goto stateid_invalid;
goto wait_on_recovery;
case -NFS4ERR_EXPIRED:
if (state != NULL)
nfs4_schedule_stateid_recovery(server, state);
if (state != NULL) {
if (nfs4_schedule_stateid_recovery(server, state) < 0)
goto stateid_invalid;
}
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_STALE_CLIENTID:
nfs4_schedule_lease_recovery(clp);
@@ -4016,6 +4028,9 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
}
task->tk_status = nfs4_map_errors(task->tk_status);
return 0;
stateid_invalid:
task->tk_status = -EIO;
return 0;
wait_on_recovery:
rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
@@ -4632,12 +4647,18 @@ static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
data->res.open_seqid = data->arg.open_seqid;
} else
data->arg.new_lock_owner = 0;
if (!nfs4_valid_open_stateid(state)) {
data->rpc_status = -EBADF;
task->tk_action = NULL;
goto out_release_open_seqid;
}
data->timestamp = jiffies;
if (nfs4_setup_sequence(data->server,
&data->arg.seq_args,
&data->res.seq_res,
task) == 0)
return;
out_release_open_seqid:
nfs_release_seqid(data->arg.open_seqid);
out_release_lock_seqid:
nfs_release_seqid(data->arg.lock_seqid);