ProblemsMounting
From Linux NFS
Contents |
the first things to check
showmounts
Run showmount -e <server> on the client. This will list list the available exports on the server:
[root@client1 ~]# showmount -e server.example.fake Export list for server.example.fake: /export * /pub 192.168.56.*
In this example, server.example.fake has two mounts available: /export and /pub
tshark
XXX
krb5 problems
rpc.ggsd not running
Mount will hang if a sec= option other than sys (which is the default) is used:
Jul 26 18:12:29 client1 kernel: [485467.135178] RPC: AUTH_GSS upcall timed out. Jul 26 18:12:29 client1 kernel: [485467.135182] Please check user daemon is running.
[root@client1 ~]# service rpcgssd restart Restarting rpcgssd (via systemctl): [ OK ] [root@client1 ~]# ps wwuax | grep rpc.gssd root 876 0.0 0.1 39376 2572 ? Ss Jul21 0:37 rpc.gssd -vvv root 5271 0.0 0.0 109100 836 pts/0 S+ 18:21 0:00 grep --color=auto rpc.gssd
couldn't connect to server's rpc.svcgssd
Like many errors, you get a permission denied
mount.nfs4: mount(2): Permission denied
But the syslog tells more (if rpc.gssd is running with -vvv):
Jul 26 18:25:45 client1 rpc.gssd[5325]: creating context with server nfs@server.example.fake Jul 26 18:25:45 client1 rpc.gssd[5325]: WARNING: Failed to create krb5 context for user with uid 0 for server server.example.fake Jul 26 18:25:45 client1 rpc.gssd[5325]: WARNING: Failed to create machine krb5 context with credentials cache FILE:/tmp/krb5cc_machine_EXAMPLE.FAKE for server server.example.fake Jul 26 18:25:45 client1 rpc.gssd[5325]: WARNING: Machine cache is prematurely expired or corrupted trying to recreate cache for server server.example.fake
This error condition is detectable and we should probably have a better message - or maybe return a different error to mount (like EIO).
user not authenticated
XXX show weird mesg
no supported enc types
XXX
