# captured 2026-10-23T14:21:56Z on dooplex
$ cat /etc/exports (comments stripped)
/mnt/5_hdd/backup/longhorn-pvc *(rw,sync,no_subtree_check,no_root_squash)
/mnt/5_hdd/felhom-data 192.168.0.162(rw,all_squash,anonuid=101000,anongid=101000,no_subtree_check)
ls: cannot access '/etc/exports.d': No such file or directory
-rw-r--r-- 1 root root 680 Aug 14 06:59 /etc/exports

$ sudo exportfs -v
/mnt/5_hdd/felhom-data
		192.168.0.162(sync,wdelay,hide,no_subtree_check,anonuid=101000,anongid=101000,sec=sys,rw,secure,root_squash,all_squash)
/mnt/5_hdd/backup/longhorn-pvc
		<world>(sync,wdelay,hide,no_subtree_check,sec=sys,rw,secure,no_root_squash,no_all_squash)

$ showmount -a localhost
All mount points on localhost:

$ /var/lib/nfs/rmtab

$ /proc/fs/nfsd/clients/*/info
== /proc/fs/nfsd/clients/*/info
cat: '/proc/fs/nfsd/clients/*/info': No such file or directory

$ /proc/fs/nfsd/versions
+3 +4 +4.1 +4.2
$ /etc/nfs.conf (non-comment)
[general]
pipefs-directory=/run/rpc_pipefs
[nfsrahead]
[exports]
[exportfs]
[gssd]
[lockd]
[exportd]
[mountd]
manage-gids=y
[nfsdcld]
[nfsd]
[statd]
[sm-notify]
[svcgssd]

$ ss -tnp sport/dport 2049, 111, 20048
State  Recv-Q Send-Q Local Address:Port  Peer Address:PortProcess                                                   
LISTEN 0      4096         0.0.0.0:2049       0.0.0.0:*                                                             
LISTEN 0      4096         0.0.0.0:111        0.0.0.0:*    users:(("rpcbind",pid=1932,fd=4),("systemd",pid=1,fd=47))
ESTAB  0      0      192.168.0.180:38514  10.43.69.49:2049                                                          
ESTAB  0      0      192.168.0.180:58280 10.43.31.240:2049                                                          
ESTAB  0      0      192.168.0.180:2049   10.42.0.214:669                                                           
LISTEN 0      4096            [::]:2049          [::]:*                                                             
LISTEN 0      4096            [::]:111           [::]:*    users:(("rpcbind",pid=1932,fd=6),("systemd",pid=1,fd=49))

$ ss -lntup nfs/rpc listeners
udp   UNCONN 0      0                                     0.0.0.0:111        0.0.0.0:*    users:(("rpcbind",pid=1932,fd=5),("systemd",pid=1,fd=48))                    
udp   UNCONN 0      0                                     0.0.0.0:33506      0.0.0.0:*    users:(("tailscaled",pid=86160,fd=19))                                       
udp   UNCONN 0      0                                     0.0.0.0:34514      0.0.0.0:*    users:(("rpc.mountd",pid=2203,fd=8))                                         
udp   UNCONN 0      0                                     0.0.0.0:38607      0.0.0.0:*    users:(("rpc.mountd",pid=2203,fd=4))                                         
udp   UNCONN 0      0                                        [::]:111           [::]:*    users:(("rpcbind",pid=1932,fd=7),("systemd",pid=1,fd=50))                    
udp   UNCONN 0      0                                        [::]:34707         [::]:*    users:(("tailscaled",pid=86160,fd=18))                                       
tcp   LISTEN 0      64                                    0.0.0.0:37541      0.0.0.0:*                                                                                 
tcp   LISTEN 0      4096                                  0.0.0.0:36457      0.0.0.0:*    users:(("rpc.mountd",pid=2203,fd=9))                                         
tcp   LISTEN 0      4096                                  0.0.0.0:2049       0.0.0.0:*                                                                                 
tcp   LISTEN 0      4096                                  0.0.0.0:111        0.0.0.0:*    users:(("rpcbind",pid=1932,fd=4),("systemd",pid=1,fd=47))                    
tcp   LISTEN 0      4096                                     [::]:2049          [::]:*                                                                                 
tcp   LISTEN 0      4096                                     [::]:111           [::]:*    users:(("rpcbind",pid=1932,fd=6),("systemd",pid=1,fd=49))                    
tcp   LISTEN 0      4096   [fd7a:115c:a1e0::fc01:579a]%tailscale0:33516         [::]:*    users:(("tailscaled",pid=86160,fd=24))                                       
tcp   LISTEN 0      4096                                        *:31983            *:*    users:(("k3s-server",pid=2231,fd=41))                                        
tcp   LISTEN 0      4096                                        *:31433            *:*    users:(("k3s-server",pid=2231,fd=80))                                        
tcp   LISTEN 0      4096                                        *:30196            *:*    users:(("k3s-server",pid=2231,fd=324))                                       
tcp   LISTEN 0      4096                                        *:30239            *:*    users:(("k3s-server",pid=2231,fd=320))                                       
tcp   LISTEN 0      4096                                        *:30627            *:*    users:(("k3s-server",pid=2231,fd=317))                                       

$ rpcinfo -p
   program vers proto   port  service
    100000    4   tcp    111  portmapper
    100000    3   tcp    111  portmapper
    100000    2   tcp    111  portmapper
    100000    4   udp    111  portmapper
    100000    3   udp    111  portmapper
    100000    2   udp    111  portmapper
    100005    1   udp  38607  mountd
    100005    1   tcp  51925  mountd
    100005    2   udp  34514  mountd
    100005    2   tcp  36457  mountd
    100005    3   udp  42427  mountd
    100005    3   tcp  57549  mountd
    100024    1   udp  56119  status
    100024    1   tcp  52519  status
    100003    3   tcp   2049  nfs
    100003    4   tcp   2049  nfs
    100227    3   tcp   2049  nfs_acl
    100021    1   udp  45443  nlockmgr
    100021    3   udp  45443  nlockmgr
    100021    4   udp  45443  nlockmgr
    100021    1   tcp  37541  nlockmgr
    100021    3   tcp  37541  nlockmgr
    100021    4   tcp  37541  nlockmgr

# appended 2026-10-23T14:22:12Z
$ sudo ls /proc/fs/nfsd/clients; cat */info
== client 3
clientid: 0x6c6ec1426adb63eb
address: "10.42.0.214:669"
status: confirmed
seconds from last renew: 49
name: "Linux NFSv4.2 longhorn-manager-w4tf6"
minor version: 2
Implementation domain: "kernel.org"
Implementation name: "Linux 6.12.113+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.113-1 (2026-10-15) x86_64"
Implementation time: [0, 0]
callback state: UP
callback address: "10.42.0.214:0"
admin-revoked states: 0
$ sudo cat /proc/fs/nfsd/exports
# Version 1.1
# Path Client(Flags) # IPs
/mnt/5_hdd	*(ro,insecure,no_root_squash,sync,no_wdelay,no_subtree_check,v4root,uuid=d2423144:e2585cd2:bcf24caa:707cadf0,sec=1)
/mnt	*(ro,insecure,no_root_squash,sync,no_wdelay,no_subtree_check,v4root,uuid=0a4bfb73:2e6b5931:9b78e97b:7691fb97,sec=1)
/mnt/5_hdd/backup/longhorn-pvc	*(rw,no_root_squash,sync,wdelay,no_subtree_check,uuid=2fb0cf66:1b3d4fcc:850508ca:f5a7f8fc,sec=1)
/mnt/5_hdd/backup	*(ro,insecure,no_root_squash,sync,no_wdelay,no_subtree_check,v4root,uuid=a14fb08e:93ef58c9:8e149646:540a8430,sec=1)
/	*(ro,insecure,no_root_squash,sync,no_wdelay,no_subtree_check,v4root,fsid=0,sec=1)
$ peer 10.42.0.214 = pod longhorn-system/longhorn-manager-w4tf6 (kubectl get pods -A -o wide)
$ 10.43.31.240 / 10.43.69.49 = longhorn-system ClusterIP services pvc-1d4ec717 / pvc-8ed5eea5 (RWX share-managers; DooPlex is the CLIENT there)
$ uptime / nfs-server active since
 16:22:12 up 41 min,  7 users,  load average: 3.38, 4.81, 5.47
ActiveEnterTimestamp=Fri 2026-10-23 15:40:59 CEST
ActiveEnterTimestamp=Fri 2026-10-23 15:40:56 CEST
