Proxmox backup con iSCSI

En este caso usaremos una cabina synology a la que denominaremos NAS01  y con IP 10.10.10.10:

Configuración inicial:

Discovery y login:

# iscsiadm -m discovery -t st -p 10.10.10.10

10.10.10.10:3260,1 iqn.2000-01.com.synology:NAS01.default-target.669579eed99

# iscsiadm -m node --login

Logging in to [iface: default, target: iqn.2000-01.com.synology:NAS01.default-target.669579eed99, portal: 10.10.10.10,3260]

Login to [iface: default, target: iqn.2000-01.com.synology:NAS01.default-target.669579eed99, portal: 10.10.10.10,3260] successful.

# iscsiadm -m session -o show
tcp: [2] 10.10.10.10:3260,1 iqn.2000-01.com.synology:NAS01.default-target.669579eed99 (non-flash)

#

Localizamos el disco:

# fdisk -l
Disk /dev/sda: xxxxx GiB, xxxx bytes, xxx sectors
Disk model: MODELO
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 370...

Device       Start       End   Sectors   Size Type
/dev/sda1      XXX      XXX   

[...]

Disk /dev/sdb: [...]

[...]

Disk /dev/sdc: 10 TiB, 10995116277760 bytes, 21474836480 sectors
Disk model: Storage
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
#

Creamos el pool ZFS:

# zpool create -f NAS01LUNBCK01 /dev/sdc


# zpool list
NAME            SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP    HEALTH  ALTROOT
NAS01LUNBCK01  9.98T   106K  9.98T        -         -     0%     0%  1.00x    ONLINE  -
#

Configurar el inicio

ISCSI

# iscsiadm --mode session
tcp: [2] 10.10.10.10:3260,1 iqn.2000-01.com.synology:NAS01.default-target.669579eed99 (non-flash)
# iscsiadm --mode node -T iqn.2000-01.com.synology:NAS01.default-target.669579eed99 -p 10.10.10.10 -o update -n node.startup -v automatic
# iscsiadm --mode node -T iqn.2000-01.com.synology:NAS01.default-target.669579eed99 -p 10.10.10.10 -o update -n node.conn[0].startup -v automatic

ir a /etc/iscsi/iscsid.conf y cambiar manual a automatic:

# To request that the iscsi initd scripts startup a session set to "automatic".
node.startup = automatic
#
# To manually startup the session set to "manual". The default is manual.
#node.startup = manual

ZFS

Localizar path

# systemctl list-units --all --full | grep disk | grep 10.10.10.10 | egrep -v "*part*"
  dev-disk-by\x2dpath-ip\x2d10.10.10.10:3260\x2discsi\x2diqn.2000\x2d01.com.synology:NAS01.default\x2dtarget.669579eed99\x2dlun\x2d1.device          loaded    active   plugged   Storage

crear en /etc/systemd/system la unit zpooliscsi.service y añadir al inicio:

# cat zpooliscsi.service
[Unit]
After=dev-disk-by\x2dpath-ip\x2d10.10.10.10:3260\x2discsi\x2diqn.2000\x2d01.com.synology:NAS01.default\x2dtarget.669579eed99\x2dlun\x2d1.device

[Service]
ExecStart=/usr/sbin/zpool import NAS01LUNBCK01
ExecStartPost=/usr/bin/logger "Inciaiado el Pool ZFS NAS01LUNBCK01"

[Install]
WantedBy=dev-disk-by\x2dpath-ip\x2d10.10.10.10:3260\x2discsi\x2diqn.2000\x2d01.com.synology:NAS01.default\x2dtarget.669579eed99\x2dlun\x2d1.device

#systemctl daemon-reload
# systemctl enable zpooliscsi
Created symlink /etc/systemd/system/dev-disk-by\x2dpath-ip\x2d172.16.250.201:3260\x2discsi\x2diqn.2000\x2d01.com.synology:NAS01.default\x2dtarget.669579eed99\x2dlun\x2d1.device.wants/zpooliscsi.service → /etc/systemd/system/zpooliscsi.service.
# systemctl restart zpooliscsi

Si queremos podemos probar a reiniciar  y comprobar que todo funciona ;)