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svemagie
2026-04-01 16:01:45 +02:00
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@@ -4,32 +4,32 @@ category: bsd/zfs
aiTextLevel: "0"
syndication:
- https://blog.giersig.eu/notes/bed63/
updated: 2026-04-01T14:00:43.164Z
updated: 2026-04-01T14:01:45.287Z
mpUrl: https://blog.giersig.eu/notes/bed63/
permalink: /notes/bed63/
---
The beauty of ZFS! I’ve got some extra space, so I’m moving some large jails there, where they can live happily ever after.
Step 1 — Stop both jails.
Step 1 - Stop both jails.
Step 2 — Create parent datasets on new pool "store":
Step 2 - Create parent datasets on new pool "store":
```
zfs create -o mountpoint=none store/bastille
zfs create -o mountpoint=none store/bastille/jails
```
Step 3 — Snapshot both jail datasets:
Step 3 - Snapshot both jail datasets:
```
zfs snapshot -r zroot/bastille/jails/audio@migrate
zfs snapshot -r zroot/bastille/jails/cloud@migrate
```
Step 4 — Transfer to "store":
Step 4 - Transfer to "store":
```
zfs send -R zroot/bastille/jails/audio@migrate | zfs recv -o mountpoint=none store/bastille/jails/audio
zfs send -R zroot/bastille/jails/cloud@migrate | zfs recv -o mountpoint=none store/bastille/jails/cloud
```
Step 5 — Unmount old datasets and disable auto-mount:
Step 5 - Unmount old datasets and disable auto-mount:
```
zfs unmount -f zroot/bastille/jails/audio
zfs unmount -f zroot/bastille/jails/cloud
@@ -38,25 +38,25 @@ zfs set canmount=noauto zroot/bastille/jails/audio/root
zfs set canmount=noauto zroot/bastille/jails/cloud
zfs set canmount=noauto zroot/bastille/jails/cloud/root
```
Step 6 — Set mountpoints on new datasets (children inherit):
Step 6 - Set mountpoints on new datasets (children inherit):
```
zfs set mountpoint=/usr/local/bastille/jails/audio store/bastille/jails/audio
zfs set mountpoint=/usr/local/bastille/jails/cloud store/bastille/jails/cloud
```
Step 7 — Mount new datasets:
Step 7 - Mount new datasets:
```
zfs mount store/bastille/jails/audio
zfs mount store/bastille/jails/audio/root
zfs mount store/bastille/jails/cloud
zfs mount store/bastille/jails/cloud/root
```
Step 8 — Quick sanity check:
Step 8 - Quick sanity check:
```
ls /usr/local/bastille/jails/audio/root/srv/funkwhale/
ls /usr/local/bastille/jails/cloud/root/usr/local/www/cloud/
```
Step 9 - destroy the old dataset
Step 9 - destroy the old datasets:
```
zfs destroy -r zroot/bastille/jails/audio
zfs destroy -r zroot/bastille/jails/cloud