[v5,07/10] pNFS: Retry NFS4ERR_OLD_STATEID errors in layoutreturn-on-close
diff mbox

Message ID 20171103113539.5551-8-trond.myklebust@primarydata.com
State New
Headers show

Commit Message

Trond Myklebust Nov. 3, 2017, 11:35 a.m. UTC
If our layoutreturn on close operation returns an NFS4ERR_OLD_STATEID,
then try to update the stateid and retry. We know that there should
be no further LAYOUTGET requests being launched.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---
 fs/nfs/nfs4proc.c | 18 ++++++++++++++++--
 fs/nfs/pnfs.c     | 18 ++++++++++++++++++
 fs/nfs/pnfs.h     |  1 +
 3 files changed, 35 insertions(+), 2 deletions(-)

Comments

Anna Schumaker Nov. 3, 2017, 4:46 p.m. UTC | #1
Hi Trond,

On 11/03/2017 07:35 AM, Trond Myklebust wrote:
> If our layoutreturn on close operation returns an NFS4ERR_OLD_STATEID,
> then try to update the stateid and retry. We know that there should
> be no further LAYOUTGET requests being launched.
> 
> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
> ---
>  fs/nfs/nfs4proc.c | 18 ++++++++++++++++--
>  fs/nfs/pnfs.c     | 18 ++++++++++++++++++
>  fs/nfs/pnfs.h     |  1 +
>  3 files changed, 35 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
> index fe4a855dc965..1bb0e405aa57 100644
> --- a/fs/nfs/nfs4proc.c
> +++ b/fs/nfs/nfs4proc.c
> @@ -3165,11 +3165,18 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
>  			calldata->arg.lr_args = NULL;
>  			calldata->res.lr_res = NULL;
>  			break;
> +		case -NFS4ERR_OLD_STATEID:
> +			if (nfs4_refresh_layout_stateid(&calldata->arg.lr_args->stateid,
> +						calldata->inode)) {

This doesn't compile with CONFIG_NFS_V4_1=n.  I get:

  CC [M]  fs/nfs/nfs4proc.o
fs/nfs/nfs4proc.c: In function 'nfs4_close_done':
fs/nfs/nfs4proc.c:3169:8: error: implicit declaration of function 'nfs4_refresh_layout_stateid'; did you mean 'nfs4_refresh_open_stateid'? [-Werror=implicit-function-declaration]
    if (nfs4_refresh_layout_stateid(&calldata->arg.lr_args->stateid,
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~
        nfs4_refresh_open_stateid

Thanks,
Anna

> +				calldata->res.lr_ret = 0;
> +				rpc_restart_call_prepare(task);
> +				return;
> +			}
> +			/* Fallthrough */
>  		case -NFS4ERR_ADMIN_REVOKED:
>  		case -NFS4ERR_DELEG_REVOKED:
>  		case -NFS4ERR_EXPIRED:
>  		case -NFS4ERR_BAD_STATEID:
> -		case -NFS4ERR_OLD_STATEID:
>  		case -NFS4ERR_UNKNOWN_LAYOUTTYPE:
>  		case -NFS4ERR_WRONG_CRED:
>  			calldata->arg.lr_args = NULL;
> @@ -5787,11 +5794,18 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
>  			data->args.lr_args = NULL;
>  			data->res.lr_res = NULL;
>  			break;
> +		case -NFS4ERR_OLD_STATEID:
> +			if (nfs4_refresh_layout_stateid(&data->args.lr_args->stateid,
> +						data->inode)) {
> +				data->res.lr_ret = 0;
> +				rpc_restart_call_prepare(task);
> +				return;
> +			}
> +			/* Fallthrough */
>  		case -NFS4ERR_ADMIN_REVOKED:
>  		case -NFS4ERR_DELEG_REVOKED:
>  		case -NFS4ERR_EXPIRED:
>  		case -NFS4ERR_BAD_STATEID:
> -		case -NFS4ERR_OLD_STATEID:
>  		case -NFS4ERR_UNKNOWN_LAYOUTTYPE:
>  		case -NFS4ERR_WRONG_CRED:
>  			data->args.lr_args = NULL;
> diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
> index 3bcd669a3152..5e4cd6a7af66 100644
> --- a/fs/nfs/pnfs.c
> +++ b/fs/nfs/pnfs.c
> @@ -355,6 +355,24 @@ pnfs_clear_lseg_state(struct pnfs_layout_segment *lseg,
>  }
>  
>  /*
> + * Update the seqid of a layout stateid
> + */
> +bool nfs4_refresh_layout_stateid(nfs4_stateid *dst, struct inode *inode)
> +{
> +	struct pnfs_layout_hdr *lo;
> +	bool ret = false;
> +
> +	spin_lock(&inode->i_lock);
> +	lo = NFS_I(inode)->layout;
> +	if (lo && nfs4_stateid_match_other(dst, &lo->plh_stateid)) {
> +		dst->seqid = lo->plh_stateid.seqid;
> +		ret = true;
> +	}
> +	spin_unlock(&inode->i_lock);
> +	return ret;
> +}
> +
> +/*
>   * Mark a pnfs_layout_hdr and all associated layout segments as invalid
>   *
>   * In order to continue using the pnfs_layout_hdr, a full recovery
> diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
> index 87f144f14d1e..3a8e2fbf038a 100644
> --- a/fs/nfs/pnfs.h
> +++ b/fs/nfs/pnfs.h
> @@ -251,6 +251,7 @@ int pnfs_destroy_layouts_byfsid(struct nfs_client *clp,
>  		bool is_recall);
>  int pnfs_destroy_layouts_byclid(struct nfs_client *clp,
>  		bool is_recall);
> +bool nfs4_refresh_layout_stateid(nfs4_stateid *dst, struct inode *inode);
>  void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo);
>  void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo,
>  			     const nfs4_stateid *new,
> 
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Trond Myklebust Nov. 3, 2017, 4:54 p.m. UTC | #2
On Fri, 2017-11-03 at 12:46 -0400, Anna Schumaker wrote:
> Hi Trond,

> 

> On 11/03/2017 07:35 AM, Trond Myklebust wrote:

> > If our layoutreturn on close operation returns an

> > NFS4ERR_OLD_STATEID,

> > then try to update the stateid and retry. We know that there should

> > be no further LAYOUTGET requests being launched.

> > 

> > Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

> > ---

> >  fs/nfs/nfs4proc.c | 18 ++++++++++++++++--

> >  fs/nfs/pnfs.c     | 18 ++++++++++++++++++

> >  fs/nfs/pnfs.h     |  1 +

> >  3 files changed, 35 insertions(+), 2 deletions(-)

> > 

> > diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c

> > index fe4a855dc965..1bb0e405aa57 100644

> > --- a/fs/nfs/nfs4proc.c

> > +++ b/fs/nfs/nfs4proc.c

> > @@ -3165,11 +3165,18 @@ static void nfs4_close_done(struct rpc_task

> > *task, void *data)

> >  			calldata->arg.lr_args = NULL;

> >  			calldata->res.lr_res = NULL;

> >  			break;

> > +		case -NFS4ERR_OLD_STATEID:

> > +			if (nfs4_refresh_layout_stateid(&calldata-

> > >arg.lr_args->stateid,

> > +						calldata->inode))

> > {

> 

> This doesn't compile with CONFIG_NFS_V4_1=n.  I get:

> 

>   CC [M]  fs/nfs/nfs4proc.o

> fs/nfs/nfs4proc.c: In function 'nfs4_close_done':

> fs/nfs/nfs4proc.c:3169:8: error: implicit declaration of function

> 'nfs4_refresh_layout_stateid'; did you mean

> 'nfs4_refresh_open_stateid'? [-Werror=implicit-function-declaration]

>     if (nfs4_refresh_layout_stateid(&calldata->arg.lr_args->stateid,

>         ^~~~~~~~~~~~~~~~~~~~~~~~~~~

>         nfs4_refresh_open_stateid


Doh! Fixed in v6...
-- 
Trond Myklebust
Linux NFS client maintainer, PrimaryData
trond.myklebust@primarydata.com

Patch
diff mbox

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index fe4a855dc965..1bb0e405aa57 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3165,11 +3165,18 @@  static void nfs4_close_done(struct rpc_task *task, void *data)
 			calldata->arg.lr_args = NULL;
 			calldata->res.lr_res = NULL;
 			break;
+		case -NFS4ERR_OLD_STATEID:
+			if (nfs4_refresh_layout_stateid(&calldata->arg.lr_args->stateid,
+						calldata->inode)) {
+				calldata->res.lr_ret = 0;
+				rpc_restart_call_prepare(task);
+				return;
+			}
+			/* Fallthrough */
 		case -NFS4ERR_ADMIN_REVOKED:
 		case -NFS4ERR_DELEG_REVOKED:
 		case -NFS4ERR_EXPIRED:
 		case -NFS4ERR_BAD_STATEID:
-		case -NFS4ERR_OLD_STATEID:
 		case -NFS4ERR_UNKNOWN_LAYOUTTYPE:
 		case -NFS4ERR_WRONG_CRED:
 			calldata->arg.lr_args = NULL;
@@ -5787,11 +5794,18 @@  static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
 			data->args.lr_args = NULL;
 			data->res.lr_res = NULL;
 			break;
+		case -NFS4ERR_OLD_STATEID:
+			if (nfs4_refresh_layout_stateid(&data->args.lr_args->stateid,
+						data->inode)) {
+				data->res.lr_ret = 0;
+				rpc_restart_call_prepare(task);
+				return;
+			}
+			/* Fallthrough */
 		case -NFS4ERR_ADMIN_REVOKED:
 		case -NFS4ERR_DELEG_REVOKED:
 		case -NFS4ERR_EXPIRED:
 		case -NFS4ERR_BAD_STATEID:
-		case -NFS4ERR_OLD_STATEID:
 		case -NFS4ERR_UNKNOWN_LAYOUTTYPE:
 		case -NFS4ERR_WRONG_CRED:
 			data->args.lr_args = NULL;
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 3bcd669a3152..5e4cd6a7af66 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -355,6 +355,24 @@  pnfs_clear_lseg_state(struct pnfs_layout_segment *lseg,
 }
 
 /*
+ * Update the seqid of a layout stateid
+ */
+bool nfs4_refresh_layout_stateid(nfs4_stateid *dst, struct inode *inode)
+{
+	struct pnfs_layout_hdr *lo;
+	bool ret = false;
+
+	spin_lock(&inode->i_lock);
+	lo = NFS_I(inode)->layout;
+	if (lo && nfs4_stateid_match_other(dst, &lo->plh_stateid)) {
+		dst->seqid = lo->plh_stateid.seqid;
+		ret = true;
+	}
+	spin_unlock(&inode->i_lock);
+	return ret;
+}
+
+/*
  * Mark a pnfs_layout_hdr and all associated layout segments as invalid
  *
  * In order to continue using the pnfs_layout_hdr, a full recovery
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 87f144f14d1e..3a8e2fbf038a 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -251,6 +251,7 @@  int pnfs_destroy_layouts_byfsid(struct nfs_client *clp,
 		bool is_recall);
 int pnfs_destroy_layouts_byclid(struct nfs_client *clp,
 		bool is_recall);
+bool nfs4_refresh_layout_stateid(nfs4_stateid *dst, struct inode *inode);
 void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo);
 void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo,
 			     const nfs4_stateid *new,