Please review the details below and let me know if there is a setting that I 
should apply to my FreeBSD NFS Server or if there is a bug fix that I can apply 
to resolve my issue.
I shared this information with the linux-nfs mailing list and they believe the 
issue is on the server side.

Issue
NFSv4 mounts periodically hang on the NFS Client.

During this time, it is possible to manually mount from another NFS Server on 
the NFS Client having issues.
Also, other NFS Clients are successfully mounting from the NFS Server in 
question.
Rebooting the NFS Client appears to be the only solution.

Environment
NFS Server
OS:          FreeBSD 12.1-RELEASE-p5

NFS Client
OS:             Debian Buster 10.8
Kernel: 4.19.171-2
Protocol:       NFSv4 with Kerberos Security
Mount Options:  nfs-server.domain.com:/data     /mnt/data       nfs4    
lookupcache=pos,noresvport,sec=krb5,hard,rsize=1048576,wsize=1048576    00

Output from the NFS Client when the issue occurs
# netstat -an | grep NFS.Server.IP.X
tcp        0      0 NFS.Client.IP.X:46896      NFS.Server.IP.X:2049       
FIN_WAIT2

# cat /sys/kernel/debug/sunrpc/rpc_xprt/*/info
netid: tcp
addr:  NFS.Server.IP.X
port:  2049
state: 0x51 

syslog
Mar  4 10:29:27 hostname kernel: [437414.131978] -pid- flgs status -client- 
--rqstp- -timeout ---ops--
Mar  4 10:29:27 hostname kernel: [437414.133158] 57419 40a1      0 9b723c73 
143cfadf    30000 4ca953b5 nfsv4 OPEN_NOATTR a:call_connect_status [sunrpc] 
q:xprt_pending
Mar  4 10:29:27 hostname kernel: [437414.135211] 57420 4081    -11 9b723c73   
(null)        0 4ca953b5 nfsv4 OPEN_NOATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.137250] 57421 4081    -11 9b723c73   
(null)        0 4ca953b5 nfsv4 OPEN_NOATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.139345] 57422 4081    -11 9b723c73   
(null)        0 4ca953b5 nfsv4 OPEN_NOATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.141496] 57423 4081    -11 9b723c73   
(null)        0 4ca953b5 nfsv4 OPEN_NOATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.143712] 57424 4081    -11 9b723c73   
(null)        0 4ca953b5 nfsv4 OPEN_NOATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.145940] 57425 4081    -11 9b723c73   
(null)        0 4ca953b5 nfsv4 OPEN_NOATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.148227] 57426 4081    -11 9b723c73   
(null)        0 4ca953b5 nfsv4 OPEN_NOATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.150575] 57427 4081    -11 9b723c73   
(null)        0 4ca953b5 nfsv4 OPEN_NOATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.152938] 57428 4080    -11 9b723c73   
(null)        0  fb0400d nfsv4 LOOKUP a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.154478] 57433 4080    -11 27bf33c1   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.156023] 57434 4080    -11 27bf33c1   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.157549] 57435 4080    -11 27bf33c1   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.159073] 57436 4080    -11 27bf33c1   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.160587] 57437 4080    -11 27bf33c1   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.162094] 57438 4080    -11 27bf33c1   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.163597] 57431 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.165100] 57432 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.166598] 57439 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.168088] 57440 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.169573] 57441 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.171058] 57442 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.172532] 57443 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.173991] 57444 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.175452] 57445 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.176906] 57446 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.178349] 57447 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.179792] 57448 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.181227] 57449 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.182655] 57450 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.184081] 57451 4080    -11 3118865a   
(null)        0  fb0400d nfsv4 GETATTR a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.185494] 57418 4880    -11 d42d6144 
ab8b1696        0  fb0400d nfsv4 STATFS a:call_connect_status [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.186905] 57430 4080    -11 d42d6144   
(null)        0  fb0400d nfsv4 STATFS a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:27 hostname kernel: [437414.188310] 57429 5281    -11 907fb25c   
(null)        0 5fa6554c nfsv4 SEQUENCE a:call_reserveresult [sunrpc] 
q:xprt_sending
Mar  4 10:29:30 hostname kernel: [437417.110517] RPC: 57419 
xprt_connect_status: connect attempt timed out
Mar  4 10:29:30 hostname kernel: [437417.112172] RPC: 57419 call_connect_status 
(status -110)
Mar  4 10:29:30 hostname kernel: [437417.113337] RPC: 57419 call_timeout (major)
Mar  4 10:29:30 hostname kernel: [437417.114385] RPC: 57419 call_bind (status 0)
Mar  4 10:29:30 hostname kernel: [437417.115402] RPC: 57419 call_connect xprt 
00000000e061831b is not connected
Mar  4 10:29:30 hostname kernel: [437417.116547] RPC: 57419 xprt_connect xprt 
00000000e061831b is not connected
Mar  4 10:30:31 hostname kernel: [437478.551090] RPC: 57419 
xprt_connect_status: connect attempt timed out
Mar  4 10:30:31 hostname kernel: [437478.552396] RPC: 57419 call_connect_status 
(status -110)
Mar  4 10:30:31 hostname kernel: [437478.553417] RPC: 57419 call_timeout (minor)
Mar  4 10:30:31 hostname kernel: [437478.554327] RPC: 57419 call_bind (status 0)
Mar  4 10:30:31 hostname kernel: [437478.555220] RPC: 57419 call_connect xprt 
00000000e061831b is not connected
Mar  4 10:30:31 hostname kernel: [437478.556254] RPC: 57419 xprt_connect xprt 
00000000e061831b is not connected


Jason Breitman






_______________________________________________
freebsd-net@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/freebsd-net
To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"

Reply via email to