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pNFS/flexfiles: If the layout is invalid, it must be updated before retrying 

If we see that our pNFS READ/WRITE/COMMIT operation failed, but we
also see that our layout segment is no longer valid, then we need to
get a new layout segment before retrying.

Fixes: 90816d1dda ("NFSv4.1/flexfiles: Don't mark the entire deviceid...")
Cc: stable@vger.kernel.org # v4.2+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust 2017-02-17 19:49:09 -05:00 committed by Anna Schumaker
parent 686a816ab6
commit df3ab232e4
1 changed files with 7 additions and 6 deletions
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13
fs/nfs/flexfilelayout/flexfilelayout.c
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@ -1053,9 +1053,6 @@ static int ff_layout_async_handle_error_v4(struct rpc_task *task,
struct nfs_client *mds_client = mds_server->nfs_client; struct nfs_client *mds_client = mds_server->nfs_client;
struct nfs4_slot_table *tbl = &clp->cl_session->fc_slot_table; struct nfs4_slot_table *tbl = &clp->cl_session->fc_slot_table;
if (task->tk_status >= 0)
return 0;
switch (task->tk_status) { switch (task->tk_status) {
/* MDS state errors */ /* MDS state errors */
case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_DELEG_REVOKED:
@ -1157,9 +1154,6 @@ static int ff_layout_async_handle_error_v3(struct rpc_task *task,
{ {
struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx);
if (task->tk_status >= 0)
return 0;
switch (task->tk_status) { switch (task->tk_status) {
/* File access problems. Don't mark the device as unavailable */ /* File access problems. Don't mark the device as unavailable */
case -EACCES: case -EACCES:
@ -1195,6 +1189,13 @@ static int ff_layout_async_handle_error(struct rpc_task *task,
{ {
int vers = clp->cl_nfs_mod->rpc_vers->number; int vers = clp->cl_nfs_mod->rpc_vers->number;
if (task->tk_status >= 0)
return 0;
/* Handle the case of an invalid layout segment */
if (!pnfs_is_valid_lseg(lseg))
return -NFS4ERR_RESET_TO_PNFS;
switch (vers) { switch (vers) {
case 3: case 3:
return ff_layout_async_handle_error_v3(task, lseg, idx); return ff_layout_async_handle_error_v3(task, lseg, idx);