summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorTrond Myklebust <trondmy@gmail.com>2020-01-06 15:25:07 -0500
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2020-01-15 10:54:32 -0500
commit0722dc9fea58e8199577963bb7601ff9f3e00b0a (patch)
tree7fbf1262f21c5a48eb3e0978006a59b83aa82a5c
parent118b6292195cfb86a9f43cb65610fc6d980c65f4 (diff)
downloadblackbird-op-linux-0722dc9fea58e8199577963bb7601ff9f3e00b0a.tar.gz
blackbird-op-linux-0722dc9fea58e8199577963bb7601ff9f3e00b0a.zip
pNFS/flexfiles: Record resend attempts on I/O failure
If the attempt to do pNFS fails, then record what action we take to recover (resend, reset to pnfs or reset to mds). Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
-rw-r--r--fs/nfs/flexfilelayout/flexfilelayout.c6
-rw-r--r--fs/nfs/nfs4trace.h8
-rw-r--r--fs/nfs/pnfs.h8
3 files changed, 14 insertions, 8 deletions
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index 5657b7f2611f..3163b78b1d2c 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -1321,7 +1321,6 @@ static int ff_layout_read_done_cb(struct rpc_task *task,
int new_idx = hdr->pgio_mirror_idx;
int err;
- trace_nfs4_pnfs_read(hdr, task->tk_status);
if (task->tk_status < 0)
ff_layout_io_track_ds_error(hdr->lseg, hdr->pgio_mirror_idx,
hdr->args.offset, hdr->args.count,
@@ -1331,6 +1330,7 @@ static int ff_layout_read_done_cb(struct rpc_task *task,
hdr->ds_clp, hdr->lseg,
hdr->pgio_mirror_idx);
+ trace_nfs4_pnfs_read(hdr, err);
clear_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags);
clear_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags);
switch (err) {
@@ -1494,7 +1494,6 @@ static int ff_layout_write_done_cb(struct rpc_task *task,
loff_t end_offs = 0;
int err;
- trace_nfs4_pnfs_write(hdr, task->tk_status);
if (task->tk_status < 0)
ff_layout_io_track_ds_error(hdr->lseg, hdr->pgio_mirror_idx,
hdr->args.offset, hdr->args.count,
@@ -1504,6 +1503,7 @@ static int ff_layout_write_done_cb(struct rpc_task *task,
hdr->ds_clp, hdr->lseg,
hdr->pgio_mirror_idx);
+ trace_nfs4_pnfs_write(hdr, err);
clear_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags);
clear_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags);
switch (err) {
@@ -1537,7 +1537,6 @@ static int ff_layout_commit_done_cb(struct rpc_task *task,
{
int err;
- trace_nfs4_pnfs_commit_ds(data, task->tk_status);
if (task->tk_status < 0)
ff_layout_io_track_ds_error(data->lseg, data->ds_commit_index,
data->args.offset, data->args.count,
@@ -1546,6 +1545,7 @@ static int ff_layout_commit_done_cb(struct rpc_task *task,
err = ff_layout_async_handle_error(task, NULL, data->ds_clp,
data->lseg, data->ds_commit_index);
+ trace_nfs4_pnfs_commit_ds(data, err);
switch (err) {
case -NFS4ERR_RESET_TO_PNFS:
pnfs_generic_prepare_to_resend_writes(data);
diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h
index 99d3c705c00d..c83a7db91e49 100644
--- a/fs/nfs/nfs4trace.h
+++ b/fs/nfs/nfs4trace.h
@@ -155,6 +155,9 @@ TRACE_DEFINE_ENUM(NFS4ERR_WRONG_CRED);
TRACE_DEFINE_ENUM(NFS4ERR_WRONG_TYPE);
TRACE_DEFINE_ENUM(NFS4ERR_XDEV);
+TRACE_DEFINE_ENUM(NFS4ERR_RESET_TO_MDS);
+TRACE_DEFINE_ENUM(NFS4ERR_RESET_TO_PNFS);
+
#define show_nfsv4_errors(error) \
__print_symbolic(error, \
{ NFS4_OK, "OK" }, \
@@ -305,7 +308,10 @@ TRACE_DEFINE_ENUM(NFS4ERR_XDEV);
{ NFS4ERR_WRONGSEC, "WRONGSEC" }, \
{ NFS4ERR_WRONG_CRED, "WRONG_CRED" }, \
{ NFS4ERR_WRONG_TYPE, "WRONG_TYPE" }, \
- { NFS4ERR_XDEV, "XDEV" })
+ { NFS4ERR_XDEV, "XDEV" }, \
+ /* ***** Internal to Linux NFS client ***** */ \
+ { NFS4ERR_RESET_TO_MDS, "RESET_TO_MDS" }, \
+ { NFS4ERR_RESET_TO_PNFS, "RESET_TO_PNFS" })
#define show_open_flags(flags) \
__print_flags(flags, "|", \
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index f8a38065c7e4..0fafdadc9c8d 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -79,6 +79,10 @@ enum pnfs_try_status {
PNFS_TRY_AGAIN = 2,
};
+/* error codes for internal use */
+#define NFS4ERR_RESET_TO_MDS 12001
+#define NFS4ERR_RESET_TO_PNFS 12002
+
#ifdef CONFIG_NFS_V4_1
#define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4"
@@ -91,10 +95,6 @@ enum pnfs_try_status {
#define NFS4_DEF_DS_RETRANS 5
#define PNFS_DEVICE_RETRY_TIMEOUT (120*HZ)
-/* error codes for internal use */
-#define NFS4ERR_RESET_TO_MDS 12001
-#define NFS4ERR_RESET_TO_PNFS 12002
-
enum {
NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */
NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */
OpenPOWER on IntegriCloud