diff mbox series

nfs42: do not fail with EIO if ssc returns NFS4ERR_OFFLOAD_DENIED

Message ID 20230207174635.348527-1-tigran.mkrtchyan@desy.de (mailing list archive)
State New, archived
Headers show
Series nfs42: do not fail with EIO if ssc returns NFS4ERR_OFFLOAD_DENIED | expand

Commit Message

Mkrtchyan, Tigran Feb. 7, 2023, 5:46 p.m. UTC 
The NFSv4.2 server even if supports intra-SSC might prefer that for
a particular file a classic copy is performed. As returning ENOTSUPP
will clear the SSC capability of the server by the client, server
might return NFS4ERR_OFFLOAD_DENIED (well, spec talks about remote
servers there).

Update nfs42_proc_copy to handle NFS4ERR_OFFLOAD_DENIED as ENOTSUPP,
but without clearing NFS_CAP_COPY bit.

Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>
---
 fs/nfs/nfs42proc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index ecb428512fe1..93e306bf4430 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -460,7 +460,8 @@  ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
 
 		if (err >= 0)
 			break;
-		if (err == -ENOTSUPP &&
+		if ((err == -ENOTSUPP ||
+				err == -NFS4ERR_OFFLOAD_DENIED) &&
 				nfs42_files_from_same_server(src, dst)) {
 			err = -EOPNOTSUPP;
 			break;