This is a note to let you know that I've just added the patch titled
pNFS/flexfiles: If the layout is invalid, it must be updated before retrying
to the 4.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pnfs-flexfiles-if-the-layout-is-invalid-it-must-be-updated-before-retrying.patch
and it can be found in the queue-4.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From df3ab232e462bce20710596d697ade6b72497694 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Date: Fri, 17 Feb 2017 19:49:09 -0500
Subject: pNFS/flexfiles: If the layout is invalid, it must be updated before retrying
From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
commit df3ab232e462bce20710596d697ade6b72497694 upstream.
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also see that our layout segment is no longer valid, then we need to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: 90816d1ddacf ("NFSv4.1/flexfiles: Don't mark the entire deviceid...")
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/nfs/flexfilelayout/flexfilelayout.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -1053,9 +1053,6 @@ static int ff_layout_async_handle_error_
struct nfs_client *mds_client = mds_server->nfs_client;
struct nfs4_slot_table *tbl = &clp->cl_session->fc_slot_table;
- if (task->tk_status >= 0)
- return 0;
-
switch (task->tk_status) {
/* MDS state errors */
case -NFS4ERR_DELEG_REVOKED:
@@ -1157,9 +1154,6 @@ static int ff_layout_async_handle_error_
{
struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx);
- if (task->tk_status >= 0)
- return 0;
-
switch (task->tk_status) {
/* File access problems. Don't mark the device as unavailable */
case -EACCES:
@@ -1195,6 +1189,13 @@ static int ff_layout_async_handle_error(
{
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) {
case 3:
return ff_layout_async_handle_error_v3(task, lseg, idx);
Patches currently in stable-queue which might be from trond.myklebust@xxxxxxxxxxxxxxx are
queue-4.10/nfsv4-fix-reboot-recovery-in-copy-offload.patch
queue-4.10/revert-nfsv4.1-handle-nfs4err_badsession-nfs4err_deadsession-replies-to-op_sequence.patch
queue-4.10/pnfs-flexfiles-if-the-layout-is-invalid-it-must-be-updated-before-retrying.patch
queue-4.10/nfsv4-fix-memory-and-state-leak-in-_nfs4_open_and_get_state.patch