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NFSv4.1 handle DS stateid errors

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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>
This commit is contained in:
Andy Adamson 2012-03-07 10:49:41 -05:00 committed by Trond Myklebust
parent 4f1abd226d
commit 9cb8196839
3 changed files with 31 additions and 1 deletions
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1
fs/nfs/delegation.c
View file

@ -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

29
fs/nfs/nfs4filelayout.c
View file

@ -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 */

2
fs/nfs/nfs4state.c
View file

@ -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)