I want to migrate data from my Array to a ZFS Pool, which seems to be rather straightforward by simply using the mover.

However, I have not been able to find an answer to the question: "will hard links also be migrated?"

 

From what I could gather, migrating with the mover also creates datasets on the ZFS Pool.

 

My shares are like this:

user
├── appdata
├── data
└── timemachine

 

Assuming the following setup:

user/data/
├── media

│  └── hardLinkToSomeFile

└── torrents
    └── SomeFile

 

My assumption would be: The mover creates a dataset named "data" on the ZFS Pool, which contains the two folders from above, where /data/media/hardLinkToSomeFile is a hard link to /data/torrents/SomeFile

 

Is this correct?

 

Another question: Since ZFS expansion won't be available until later in Unraid 7, can I create a RaidZ2 vdev with 3x20TB + 3x16TB and then replace the 16TB drives with my old 20TB once data is copied?

Edited December 25, 20241 yr by OddMagnet

Mover should handle all the hardlinks.

 

15 hours ago, OddMagnet said:

can I create a RaidZ2 vdev with 3x20TB + 3x16TB and then replace the 16TB drives with my old 20TB once data is copied?

Yes

 

Great, thanks for the answer

 

Now I just have to patiently wait for the new hardware