Bought new disks, any simple way to migrate the pool?

[Octopuss]

How about the very topic of the thread?

 

[Octopuss]

Ok I am stuck at point 3 from https://www.truenas.com/community/threads/howto-migrate-data-from-one-pool-to-a-bigger-pool.40519/

What do I actually need to do to migrate the pool to a temp one?
The post implies this is doable from the GUI, but how?
If I enter the commands in the brackets in the shell, I get this:

octopuss@Skladiste:~ $ sudo zfs snapshot -r pool1@migrate
Password:
octopuss@Skladiste:~ $ zfs send -R pool1@migrate | zfs receive pool1-temp
cannot send pool1@migrate: encrypted dataset pool1 may not be sent with properties without the raw flag
warning: cannot send 'pool1@migrate': backup failed
cannot receive: failed to read from stream
octopuss@Skladiste:~ $

edit: I don't even understand if pool1@migrate is some sort of syntax or what. I just copied what the other post said and changed names of the pools.

 

[Octopuss]

Screw this, I have no idea what am I doing, I will just create a new pool and copy the files from a a backup I am doing to an external disk right now.
This is way too complicated.

 

[joeschmuck]

Screw this, I have no idea what am I doing, I will just create a new pool and copy the files from a a backup I am doing to an external disk right now.
This is way too complicated.

Sometimes it's easier to take the path you are familiar with.

 

[Octopuss]

What should I use to copy files to a backup disk?
I logged into the system through Mobaxterm, lauched the builtin MC and started copying the stuff, and when I woke up, the session was timed out and only a few files were copied, I guess because my PC went to sleep?
Is there something that is guaranteed to work?

 

[NugentS]

rsync?

 

[Octopuss]

Could you be more specific please?
I did a google search and my brain is dizzy. Damn Linux command line.

 

[MisterE2002]

Could you be more specific please?
I did a google search and my brain is dizzy. Damn Linux command line.

something like this:

Code:

rsync --archive --verbose --human-readable  root@172.20.0.2:/mnt/tank/src   /mnt/tank/dst/

This will pull from another truenas server and put on the current one.
The trailing slashes matter and can be the difference between an extra subfolder creation. So verify this.

Note: the command is running on the foreground. So if you expect it to take a long time be sure to use tmux or screen to run it in a virtual session.

 

[MisterE2002]

The next param is also useful :)

--dry-run

 

[Octopuss]

So I guess I can just do rsync /mnt/pool1 /mnt/pool1-temp if I'm just moving files between pools on the same system?

And if I use tmux - if I understand what I googled up correctly - will I be able to see the progress if I log back into the machine via SSH?

 

[MisterE2002]

So I guess I can just do rsync /mnt/pool1 /mnt/pool1-temp if I'm just moving files between pools on the same system?

yes, but it only copies. It does not "move" the files. Try the dry run to verify if the directory structure is like expected.

And if I use tmux - if I understand what I googled up correctly - will I be able to see the progress if I log back into the machine via SSH?

Run tmux -> run the command. You do not have a prompt because the program is still running.
CTRL-b -> d.

But what i prefer is

Code:

rsync <your params> |  tee -a rysnc.log

Now it will write the output to a file so i can follow the output without re-entering the tmux-session.
(Because if you re-enter the real session and you press the wrong keys you can kill the action).

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[Octopuss]

Nice.
The new attempt at copying the stuff with MC is still in progress and if it fails again for whatever reason, I will try this.
But it should be the same copy operation, right? Or does rsync do anything differently?

 

[MisterE2002]

to be honest i did not follow this thread. You started with zfs replication. That is copying at the block level afaik. With rsync you are copying at file(system) level.

Also note that rsync also copies metadata (the datestamps, ownership, chmod-rights). That is the "archive" flag. This may or may not important to you.

 

[Octopuss]

Yes but I gave up https://www.truenas.com/community/t...le-way-to-migrate-the-pool.106439/post-733314

 

[MisterE2002]

Yes but I gave up https://www.truenas.com/community/t...le-way-to-migrate-the-pool.106439/post-733314

yeah, i never used zfs replication currently. I am migrating currently and will repurpose my old nas as backup. So will use it in the future probably.

But please be careful with willy-nilly running commands. You can loose data this way.
Creating a Virtual Machine just to verify the results can be useful.

 

[Etorix]

There's no need for the command line. You can set up replication from the GUI (Tasks> Replication Tasks), for a one-time job as well as for scheduled back-ups.

 

[Octopuss]

Really? You can specify it to run only once?

 

[NugentS]

yes

 

[Octopuss]

Couldn't figure out how, but I can always delete the task once the backup is finished.
The damn copy from MC got messed up again, so 3rd time copying 3TB of data... yay.
I guess this works for just getting the files and folders backed up:

 

[Etorix]

Just don't tick anything under schedule and run it manually.