Does sector by sector backup support btrfs

[banger696]

As per title. I have just changed one of my Linux partitions to CachyOS which has defaulted to btrfs. I have a backup set to backup two Linux partitions and their boot partitions and have set to backup sector by sector. Will the btrfs partition successfully restore?

[admin]

The sector-by-sector backup method works for any file system and creates an exact image of the source drive, so btrfs partitions can be successfully restored.

[banger696]

Great thanks.

[Dude Guyman]

Will the btrfs partition successfully restore?

I've never used BTRFS, but it worked with EXT4.
Tip: Running a Trim right before the backup saves a lot on the image file size for me.

- assuming it's the same for BTRFS?

Code:

sudo fstrim -v /

[Dude Guyman]

I've never used BTRFS, but it worked with EXT4.
Tip: Running a Trim right before the backup saves a lot on the image file size for me.

Update after more experience:
1. When I made backups of my ~80 GB (9 GB used) Linux EXT4 partition on an NVME SSD, it worked fairly well and resulted in a ~2.7 GB backup image.
2. With an ~80 GB (9 GB used) Linux EXT4 partition on a mechanical HDD, it resulted in a massive 68 GB backup image. No good!

Not sure why the type of hard drive it was on made a difference, but it did. Because no TRIM on HDD so the entire space was seen as "occupied" by data? Anyway, Macrium v8.1 handles it well, Hasleo v5.*, not so much.