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pNFS/files: Fall back to I/O through the MDS on non-fatal layout errors

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Only report the error when the server is returning a fatal error, such
as ESTALE, EIO, etc...

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 2022-05-14 10:08:13 -04:00 committed by Anna Schumaker
parent c6fd3511c3
commit 126966dded
1 changed files with 6 additions and 1 deletions
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7
fs/nfs/filelayout/filelayout.c
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@ -839,7 +839,12 @@ fl_pnfs_update_layout(struct inode *ino,
lseg = pnfs_update_layout(ino, ctx, pos, count, iomode, strict_iomode,
gfp_flags);
if (IS_ERR_OR_NULL(lseg))
if (IS_ERR(lseg)) {
/* Fall back to MDS on recoverable errors */
if (!nfs_error_is_fatal_on_server(PTR_ERR(lseg)))
lseg = NULL;
goto out;
} else if (!lseg)
goto out;
lo = NFS_I(ino)->layout;