Attempting to mount FlexCache path gives "mount.nfs: Connection timed out"
Applies to
- ONTAP 9
- NFSv3 / Mount protocol
- FlexCache volume
Issue
- "mount.nfs: Connection timed out" on Linux, or equivalent mount error (actual error logged will be client platform specific.)
- When attempting to mount particular paths from a FlexCache volume, the mount operation times out.
- A packet trace shows that the
NULL
call for mount is replied to, but theMNT
call is not - the client performs RPC retransmission of its request, but does not get a response (see Wireshark / tshark output example below.)
23 0.001398 10.216.29.66 → 10.216.29.68 MOUNT V3 NULL Call
24 0.001579 10.216.29.68 → 10.216.29.66 MOUNT V3 NULL Reply (Call In 23)
25 0.001848 10.216.29.66 → 10.216.29.68 MOUNT V3 NULL Call
26 0.002001 10.216.29.68 → 10.216.29.66 MOUNT V3 NULL Reply (Call In 25)
27 0.002039 10.216.29.66 → 10.216.29.68 MOUNT V3 MNT Call /cache_vol1/qtree/link-to-dir1
29 5.016283 10.216.29.66 → 10.216.29.68 MOUNT [RPC retransmission of #27]V3 MNT Call /cache_vol1/qtree/link-to-dir1
31 15.032252 10.216.29.66 → 10.216.29.68 MOUNT [RPC retransmission of #27]V3 MNT Call /cache_vol1/qtree/link-to-dir1