On 11/4/24 11:43 PM, Seiichi Ikarashi (Fujitsu) wrote:
The problem happens when a v3 mount fails with ETIMEDOUT after
the v4 mount failed with EPROTONOSUPPORT, in mount auto negotiation.
It immediately breaks from the "for" loop in nfsmount_fg()
or nfsmount_child() due to EPROTONOSUPPORT, never doing the expected
retries until timeout.
[auto negotiation case]:
It breaks immediately.
# time mount.nfs -v 192.168.200.59:/exp /mnt
mount.nfs: timeout set for Wed Oct 23 14:21:58 2024
mount.nfs: trying text-based options 'vers=4.2,addr=192.168.200.59,clientaddr=192.168.200.187'
mount.nfs: mount(2): Protocol not supported
mount.nfs: trying text-based options 'vers=4,minorversion=1,addr=192.168.200.59,clientaddr=192.168.200.187'
mount.nfs: mount(2): Protocol not supported
mount.nfs: trying text-based options 'vers=4,addr=192.168.200.59,clientaddr=192.168.200.187'
mount.nfs: mount(2): Protocol not supported
mount.nfs: trying text-based options 'addr=192.168.200.59'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.200.59 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.200.59 prog 100005 vers 3 prot UDP port 20048
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.200.59 prog 100005 vers 3 prot TCP port 20048
mount.nfs: portmap query failed: RPC: Timed out
mount.nfs: Protocol not supported for 192.168.200.59:/exp on /mnt
real 0m13.027s
user 0m0.002s
sys 0m0.005s
#
[nfsvers=3 case]:
It retries until exceeding timeout as expected.
# time mount.nfs -v -o nfsvers=3 192.168.200.59:/exp /mnt
mount.nfs: timeout set for Wed Oct 23 14:22:23 2024
mount.nfs: trying text-based options 'nfsvers=3,addr=192.168.200.59'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: trying 192.168.200.59 prog 100003 vers 3 prot TCP port 2049
mount.nfs: prog 100005, trying vers=3, prot=17
mount.nfs: trying 192.168.200.59 prog 100005 vers 3 prot UDP port 20048
mount.nfs: portmap query retrying: RPC: Timed out
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.200.59 prog 100005 vers 3 prot TCP port 20048
mount.nfs: portmap query failed: RPC: Timed out
(snip)
mount.nfs: prog 100005, trying vers=3, prot=6
mount.nfs: trying 192.168.200.59 prog 100005 vers 3 prot TCP port 20048
mount.nfs: portmap query failed: RPC: Timed out
mount.nfs: Connection timed out for 192.168.200.59:/exp on /mnt
real 2m10.152s
user 0m0.007s
sys 0m0.015s
#
Let's retry in auto negotiation case, too.
Signed-off-by: Seiichi Ikarashi <s.ikarashi@xxxxxxxxxxx>
Committed... (tag: nfs-utils-2-8-2-rc1)
steved.
---
utils/mount/stropts.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
index a92c420..103c41f 100644
--- a/utils/mount/stropts.c
+++ b/utils/mount/stropts.c
@@ -981,7 +981,7 @@ fall_back:
if ((result = nfs_try_mount_v3v2(mi, FALSE)))
return result;
- if (errno != EBUSY && errno != EACCES)
+ if (errno != EBUSY && errno != EACCES && errno != ETIMEDOUT)
errno = olderrno;
return result;
