GoKawiilnfs-doctor is a small command line tool written in C to help debug NFS servers from the client side.
The idea is simple: you give one IP or hostname, and the tool checks the things that usually break in NFS: network, rpcbind, NFS versions, mountd, exports, permissions, root squash, locking, stale handles and some basic performance.
It is not magic, and it will not replace a good server side analysis. But it helps a lot to understand if the problem is network, NFS config, permissions, UID/GID mapping, or something more strange.
What this tool does
Today nfs-doctor can do these checks:
test if rpcbind TCP port 111 is reachable
TCP port is reachable test if NFS TCP port 2049 is reachable
is reachable query the RPC service map from rpcbind (supports IPv6 fallback)
detect registered NFS, mountd, lockd/NLM and statd/NSM services
test NFS v2, v3 and v4 with RPC NULLPROC (including v4.1 and v4.2 hints)
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