[PATCH 1/1] NFSv4.1/pnfs: error gracefully on partial pnfs layout
From: Olga Kornievskaia <hidden>
Date: 2024-02-07 18:29:15
Subsystem:
filesystems (vfs and infrastructure), nfs, sunrpc, and lockd clients, the rest · Maintainers:
Alexander Viro, Christian Brauner, Trond Myklebust, Anna Schumaker, Linus Torvalds
From: Olga Kornievskaia <redacted> Currently, if the server returns a partial layout, the client gets stuck asking for a layout indefinitely. Until we add support for partial layouts, treat partial layout as layout unavailable error. Signed-off-by: Olga Kornievskaia <redacted> --- fs/nfs/nfs4proc.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index dae4c1b6cc1c..108bc7f3e8c2 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c@@ -9790,6 +9790,12 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, if (status != 0) goto out; + /* Since client does not support partial pnfs layout, then treat + * getting a partial layout as LAYOUTUNAVAILABLE error + */ + if (lgp->args.range.length != lgp->res.range.length) + task->tk_status = -NFS4ERR_LAYOUTUNAVAILABLE; + if (task->tk_status < 0) { exception->retry = 1; status = nfs4_layoutget_handle_exception(task, lgp, exception);
--
2.39.1