From: Trond Myklebust <trond.myklebust@hammerspace.com>
Date: Tue, 31 May 2022 11:03:06 -0400
Subject: [PATCH] pNFS: Don't keep retrying if the server replied
NFS4ERR_LAYOUTUNAVAILABLE
Git-commit: fe44fb23d6ccde4c914c44ef74ab8d9d9ba02bea
Patch-mainline: v5.19
References: git-fixes
If the server tells us that a pNFS layout is not available for a
specific file, then we should not keep pounding it with further
layoutget requests.
Fixes: 183d9e7b112a ("pnfs: rework LAYOUTGET retry handling")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Acked-by: NeilBrown <neilb@suse.com>
---
fs/nfs/pnfs.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1915,6 +1915,12 @@ lookup_again:
/* Fallthrough */
case -EAGAIN:
break;
+ case -ENODATA:
+ /* The server returned NFS4ERR_LAYOUTUNAVAILABLE */
+ pnfs_layout_set_fail_bit(
+ lo, pnfs_iomode_to_fail_bit(iomode));
+ lseg = NULL;
+ goto out_put_layout_hdr;
default:
if (!nfs_error_is_fatal(PTR_ERR(lseg))) {
pnfs_layout_clear_fail_bit(lo, pnfs_iomode_to_fail_bit(iomode));