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pNFS: Retry NFS4ERR_OLD_STATEID errors in layoutreturn-on-close 

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>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust 2017-11-06 15:28:07 -05:00 committed by Anna Schumaker
parent c82bac6f4b
commit 7380020e77
3 changed files with 40 additions and 2 deletions
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18
fs/nfs/nfs4proc.c
View File

@ -3166,11 +3166,18 @@ 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;
@ -5771,11 +5778,18 @@ 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;

18
fs/nfs/pnfs.c
View File

@ -354,6 +354,24 @@ pnfs_clear_lseg_state(struct pnfs_layout_segment *lseg,
pnfs_lseg_dec_and_remove_zero(lseg, free_me);
}
/*
* 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
*

6
fs/nfs/pnfs.h
View File

@ -252,6 +252,7 @@ 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,
@ -765,6 +766,11 @@ static inline void nfs4_pnfs_v3_ds_connect_unload(void)
{
}
static inline bool nfs4_refresh_layout_stateid(nfs4_stateid *dst,
struct inode *inode)
{
return false;
}
#endif /* CONFIG_NFS_V4_1 */
#if IS_ENABLED(CONFIG_NFS_V4_2)