Create ZFS on backup external disk

Find the drive from /dev/disk/by-id/

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> ls /dev/disk/by-id/
...
usb-Seagate_Expansion_HDD_00000000XXXXX-0:0
...

Create Backup zpool

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zpool create seagate_backup_pool /dev/disk/by-id/usb-Seagate_Expansion_HDD_00000000XXXXX-0:0

Import Zpool in external drive

Command zpool import without any argument will show what’s available for import in current system.

After that, do zpool import seagate_backup_pool -f to actually import the backup pool.

Take Snapshot of current system

Check current snapshot

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zfs list -t snapshot

Take snapshot for all dataset.

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zfs snapshot -r tank@current

Send snapshot to backup pool

Backup as Dataset

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zfs send -R tank@current | zfs recv seagate_backup_pool/pve-init-10-24-2024

Increment

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zfs send -i -R tank@current | zfs recv seagate_backup_pool/pve-init-10-24-2024

Backup as single file

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zfs send -R tank@current > tank.bak

Make USB external drive Sleep

Install hd-idle and execute:

To instantly test out:

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hd-idle -t sdd

hdparm won’t work for usb external drive.

To check drive status:

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hdparm -C /dev/sd[abc]
smartctl -i -n standby /dev/sda

To reguarly run hd-idle, use it’s own service.

vim /etc/default/hd-idle

Below opts will make hd-idle sleep device after 600s if no activity.

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HD_IDLE_OPTS="-i 600 -l /var/log/hd-idle.log"