e-mail message meaning

[Engineerpeter]

Can anyone tell me what this message means?

starting scrub of pool 'Hyperion'

received it on my e-mail about midnight on Saturday and haven't got a clue (apart from Hyperion is the name of my data storage volume

Thanks

Peter

 

[cyberjock]

You don't know what a scrub is? If not, you *really* need to hit the books. That right there is the most important "maintenance" you could ever do on a zpool....

 

[DrKK]

Peter:

Your disk pool using a filesystem called ZFS. ZFS is far more advanced than just about any other filesystem out there. One of its more famous activities is to "scrub" your pool, which means, it goes through the files, looking for inconsistencies and errors, and "fixing" them as needed, BEFORE you have a problem.

Now, I thought, the user had to configure scrubs himself, or none would be done. So I am wondering why your pool is getting scrubbed if you don't know what it is (and hence, didn't set it up).

And also, in any case, as Cyberjock says, FreeNAS is not plug-and-go, there is a certain amount of background knowledge/understanding you'll want to have before you use the product for any data you don't want to lose, and knowing "what is a scrub" is definitely part of that. So yes, as Cyberjock said, you probably want to read at least the FreeNAS manual over the next couple days.

 

[Engineerpeter]

Thanks both; to be honest I set up the server as an experiment to see if it was the direction I wanted to take for my media server (before spending out on major hardware). I set it up using the advice I found around the site to achieve what I wanted and have found that I've not had to touch it since - and that's what i like about it most. it just worked out of the box for me!

I assume I must have set this up, but as you've already pointed out; no idea that I did. From what I have quickly read I am pleased I did.

looks like I have some holiday reading to do!

Thanks once again

 

[camilo suarez]

Peter:

Now, I thought, the user had to configure scrubs himself, or none would be done. So I am wondering why your pool is getting scrubbed if you don't know what it is (and hence, didn't set it up).

When you set up a ZFS data set, a scrub is configured automatically for it.

 

[enemy85]

When you set up a ZFS data set, a scrub is configured automatically for it.

Are u sure about it? I don't think so...
Is the scrub referred to the whole pool and not just a dataset?

 

[cyberjock]

A scrub is for a pool. One is created by default because so many people were losing pools and data because they didn't configure a default (look in the mirror).

It is *very* likely that if one hadn't been pre-created you probably wouldn't know about scrubs until you lost your pool. :P