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| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2019-02-10 22:38:43 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2019-03-01 22:37:37 -0500 |
| commit | f0922a6c0cdb928d21c2599f9671206237e7e505 (patch) | |
| tree | b92dd290a1e68aeb69f07082299260418f194810 /fs/nfs/flexfilelayout/flexfilelayout.h | |
| parent | NFSv4.2: Add client support for the generic 'layouterror' RPC call (diff) | |
| download | linux-f0922a6c0cdb928d21c2599f9671206237e7e505.tar.gz linux-f0922a6c0cdb928d21c2599f9671206237e7e505.zip | |
NFS/flexfiles: Send LAYOUTERROR when failing over mirrored reads
When a read to the preferred mirror returns an error, the flexfiles
driver records the error in the inode list and currently marks the
layout for return before failing over the attempted read to the next
mirror.
What we actually want to do is fire off a LAYOUTERROR to notify the
MDS that there is an issue with the preferred mirror, then we fail
over. Only once we've failed to read from all mirrors should we
return the layout.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs/flexfilelayout/flexfilelayout.h')
| -rw-r--r-- | fs/nfs/flexfilelayout/flexfilelayout.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.h b/fs/nfs/flexfilelayout/flexfilelayout.h index 8a2d5d630af9..31a62820a5c6 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.h +++ b/fs/nfs/flexfilelayout/flexfilelayout.h @@ -213,6 +213,7 @@ int ff_layout_track_ds_error(struct nfs4_flexfile_layout *flo, struct nfs4_ff_layout_mirror *mirror, u64 offset, u64 length, int status, enum nfs_opnum4 opnum, gfp_t gfp_flags); +void ff_layout_send_layouterror(struct pnfs_layout_segment *lseg); int ff_layout_encode_ds_ioerr(struct xdr_stream *xdr, const struct list_head *head); void ff_layout_free_ds_ioerr(struct list_head *head); unsigned int ff_layout_fetch_ds_ioerr(struct pnfs_layout_hdr *lo, |