Bidouillage Technique et Développement Admin Sys Redimensionnement de l'espace disque d'un conteneur LXD

Redimensionnement de l'espace disque d'un conteneur LXD

1/ Vérification de l'espace disque disponible sur le serveur dédié.

ubuntu@ns3103564:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
tmpfs           6.3G  1.6M  6.3G   1% /run
/dev/md3        1.8T   32G  1.7T   2% /
tmpfs            32G     0   32G   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
/dev/md2        988M  197M  725M  22% /boot
tmpfs           1.0M     0  1.0M   0% /var/snap/lxd/common/ns
tmpfs            32G     0   32G   0% /run/qemu
tmpfs           6.3G   16K  6.3G   1% /run/user/1000
ubuntu@ns3103564:~$

2/ Vérification de l'espace disque disponible sur le conteneur Peertube

ubuntu@peertube:~$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/loop5       28G   28G  3.5M 100% /
none            492K  4.0K  488K   1% /dev
tmpfs           100K     0  100K   0% /dev/lxd
tmpfs           100K     0  100K   0% /dev/.lxd-mounts
tmpfs            32G  1.1M   32G   1% /dev/shm
tmpfs            13G   17M   13G   1% /run
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           6.3G   16K  6.3G   1% /run/user/1000

Il n'y a plus d'espace disque disponible.

3/ Arrêter l'instance Peertube

ubuntu@ns3103564:~$ lxc stop peertube

ubuntu@ns3103564:~$ lxc list
+----------+---------+-----------------------+-----------------------------------------------+-----------+-----------+
|   NAME   |  STATE  |         IPV4          |                     IPV6                      |   TYPE    | SNAPSHOTS |
+----------+---------+-----------------------+-----------------------------------------------+-----------+-----------+
| peertube | STOPPED |                       |                                               | CONTAINER | 1         |
+----------+---------+-----------------------+-----------------------------------------------+-----------+-----------+
| proxy    | RUNNING | 10.123.236.230 (eth0) | fd42:e702:d7b9:a433:216:3eff:fe64:5fce (eth0) | CONTAINER | 0         |
+----------+---------+-----------------------+-----------------------------------------------+-----------+-----------+

4/ Augmenter la taille du device à 800GB.

ubuntu@ns3103564:~$ lxc config device override peertube root size=800GiB
Device root overridden for peertube

5/ Redémarrer l'instance.

ubuntu@ns3103564:~$ lxc start peertube

ubuntu@ns3103564:~$ lxc list
+----------+---------+-----------------------+-----------------------------------------------+-----------+-----------+
|   NAME   |  STATE  |         IPV4          |                     IPV6                      |   TYPE    | SNAPSHOTS |
+----------+---------+-----------------------+-----------------------------------------------+-----------+-----------+
| peertube | RUNNING | 10.123.236.180 (eth0) | fd42:e702:d7b9:a433:216:3eff:fed5:37c9 (eth0) | CONTAINER | 1         |
+----------+---------+-----------------------+-----------------------------------------------+-----------+-----------+
| proxy    | RUNNING | 10.123.236.230 (eth0) | fd42:e702:d7b9:a433:216:3eff:fe64:5fce (eth0) | CONTAINER | 0         |
+----------+---------+-----------------------+-----------------------------------------------+-----------+-----------+

6/ Vérification du pool de peertube.

ubuntu@ns3103564:~$ lxc storage list
+------------------+-------------+--------+-----------------------------------------------------+---------+
|       NAME       | DESCRIPTION | DRIVER |                       SOURCE                        | USED BY |
+------------------+-------------+--------+-----------------------------------------------------+---------+
| hacktechdev_pool |             | btrfs  | /var/snap/lxd/common/lxd/disks/hacktechdev_pool.img | 4       |
+------------------+-------------+--------+-----------------------------------------------------+---------+

ubuntu@ns3103564:~$ lxc config device show peertube
root:
  path: /
  pool: hacktechdev_pool
  size: 800GiB
  type: disk

7/ Redimensionner le filesystem btrfs du pool.

ubuntu@ns3103564:~$ sudo truncate -s 800G /var/snap/lxd/common/lxd/disks/hacktechdev_pool.img

Note : 'truncate' ne formate rien, il agrandit juste le fichier qui sert de « disque ».

7/ Redémarrage de LXD.

Note : Montage automatique du pool.

ubuntu@ns3103564:~$ sudo systemctl restart snap.lxd.daemon
Warning: The unit file, source configuration file or drop-ins of snap.lxd.daemon.service changed on disk. Run 'systemctl daemon-reload' to reload units.

8/ Montage manuel.

ubuntu@ns3103564:~$ sudo mount -o loop /var/snap/lxd/common/lxd/disks/hacktechdev_pool.img /var/snap/lxd/common/lxd/storage-pools/hacktechdev_pool

9/ Vérification du point de montage.

ubuntu@ns3103564:~$ mount | grep hacktechdev_pool
/var/snap/lxd/common/lxd/disks/hacktechdev_pool.img on /var/snap/lxd/common/lxd/storage-pools/hacktechdev_pool type btrfs (rw,relatime,discard=async,space_cache,user_subvol_rm_allowed,subvolid=5,subvol=/)

10/ Redimensionner le filesystem Btrfs

ubuntu@ns3103564:~$ sudo btrfs filesystem resize max /var/snap/lxd/common/lxd/storage-pools/hacktechdev_pool
Resize device id 1 (/dev/loop5) from 27.94GiB to max

11/ Vérifier la nouvelle taille

ubuntu@ns3103564:~$ lxc storage info hacktechdev_pool
info:
  description: ""
  driver: btrfs
  name: hacktechdev_pool
  space used: 27.09GiB
  total space: 800.00GiB
used by:
  images:
  - be09e63f57589681b73b4fbdda88d41f606608aae40fa812d9399c8219630ac0
  instances:
  - peertube
  - proxy
  profiles:
  - default

12/ Vérifier le rootfs du conteneur Peertube.

ubuntu@ns3103564:~$ lxc exec peertube -- df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/loop5      800G   28G  773G   4% /
none            492K  4.0K  488K   1% /dev
tmpfs           100K     0  100K   0% /dev/lxd
tmpfs           100K     0  100K   0% /dev/.lxd-mounts
tmpfs            32G  1.1M   32G   1% /dev/shm
tmpfs            13G  224K   13G   1% /run
tmpfs           5.0M     0  5.0M   0% /run/lock
snapfuse        119M  119M     0 100% /snap/lxd/36579
snapfuse         51M   51M     0 100% /snap/snapd/25577
snapfuse         74M   74M     0 100% /snap/core22/2163

13/ Initialiser la taille d'une instance à sa création.

$ lxc launch images:ubuntu/22.04 peertube --device root,size=200GiB