diff options
| author |   Trond Myklebust <trond.myklebust@hammerspace.com> | 2020-09-18 15:29:58 -0400 |
|---|---|---|
| committer |   Anna Schumaker <Anna.Schumaker@Netapp.com> | 2020-09-21 11:57:26 -0400 |
| commit | c0a1d129d3e01751d410343cb8e4a694716ca825 (patch) | |
| tree | 24ae0bcbeabf7c8df9eddc7185f664de43e33bf7 | |
| parent | NFSv4.2: xattr cache: remove unused cache struct field (diff) | |
| download | wireguard-linux-c0a1d129d3e01751d410343cb8e4a694716ca825.tar.xz wireguard-linux-c0a1d129d3e01751d410343cb8e4a694716ca825.zip | |
pNFS/flexfiles: Ensure we initialise the mirror bsizes correctly on read
While it is true that reading from an unmirrored source always uses
index 0, that is no longer true for mirrored sources when we fail over.
Fixes: 563c53e73b8b ("NFS: Fix flexfiles read failover")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| -rw-r--r-- | fs/nfs/flexfilelayout/flexfilelayout.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index ff8965d1a4d4..1edeebd51937 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -838,6 +838,7 @@ ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs4_ff_layout_mirror *mirror; struct nfs4_pnfs_ds *ds; int ds_idx; + u32 i; retry: ff_layout_pg_check_layout(pgio, req); @@ -863,14 +864,14 @@ retry: goto retry; } - mirror = FF_LAYOUT_COMP(pgio->pg_lseg, ds_idx); + for (i = 0; i < pgio->pg_mirror_count; i++) { + mirror = FF_LAYOUT_COMP(pgio->pg_lseg, i); + pgm = &pgio->pg_mirrors[i]; + pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].rsize; + } pgio->pg_mirror_idx = ds_idx; - /* read always uses only one mirror - idx 0 for pgio layer */ - pgm = &pgio->pg_mirrors[0]; - pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].rsize; - if (NFS_SERVER(pgio->pg_inode)->flags & (NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR)) pgio->pg_maxretrans = io_maxretrans; |