# Part 1 change, operator OK 'Yes, narrow it' — 2026-10-23T15:18:52Z
$ sha256sum /etc/exports (before)
bb9047fd8bf9cebd589ac680dbbb45746bc621591c68add15f0ae410e0c6cd76  /etc/exports
$ backup copy: /etc/exports.bak-2026-10-23-plex2shell
$ diff old new
12c12
< /mnt/5_hdd/backup/longhorn-pvc *(rw,sync,no_subtree_check,no_root_squash)
---
> /mnt/5_hdd/backup/longhorn-pvc 10.42.0.0/16(rw,sync,no_subtree_check,no_root_squash)
rc=1
$ sudo exportfs -ra
rc=0
$ 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
		10.42.0.0/16(sync,wdelay,hide,no_subtree_check,sec=sys,rw,secure,no_root_squash,no_all_squash)

# read-back 2026-10-23T15:21:36Z
$ backuptarget default: available lastSyncedAt (sync AFTER the 15:18:52Z change)
true 2026-10-23T15:20:10Z
$ nfsd v4 clients now
address: "10.42.0.214:669"
seconds from last renew: 16
name: "Linux NFSv4.2 longhorn-manager-w4tf6"
callback address: "10.42.0.214:0"
$ grep longhorn-pvc /proc/fs/nfsd/exports
/mnt/5_hdd/backup/longhorn-pvc	10.42.0.0/16(rw,no_root_squash,sync,wdelay,no_subtree_check,uuid=2fb0cf66:1b3d4fcc:850508ca:f5a7f8fc,sec=1)
UNDO: sudo cp -p /etc/exports.bak-2026-10-23-plex2shell /etc/exports && sudo exportfs -ra
