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pNFS/flexfiles: Record resend attempts on I/O failure

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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>
This commit is contained in:
Trond Myklebust 2020-01-06 15:25:07 -05:00 • committed by Anna Schumaker
parent 118b629219
commit 0722dc9fea
3 changed files with 14 additions and 8 deletions
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8
fs/nfs/pnfs.h
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@ -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 */