Selfhosted

46653 readers

359 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.
No spam posting.
Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.
Don't duplicate the full text of your blog or github here. Just post the link for folks to click.
Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).
No trolling.

Resources:

selfh.st Newsletter and index of selfhosted software and apps
awesome-selfhosted software
awesome-sysadmin resources
Self-Hosted Podcast from Jupiter Broadcasting

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 2 years ago

MODERATORS

[email protected]

TrueNAS Scale, hard disks, and pools (piefed.social)

submitted 2 weeks ago by [email protected] to c/[email protected]

19 comments fedilink hide all child comments

I'm trying to run a load of services and use TrueNAS Scale as the data storage for them. I have three 1 TB disks setup as RAIDZ1 - a single data pool. I've had to unplug the power a few times for various practical reasons and it seems like this setup simply cannot be relied on to function. Sometimes it's fine, sometimes it's not. I feel like I'm taking crazy pills here and cannot for the life of me figure out what I'm supposed to be doing.

I take a look at the storage dashboard and see "Unused disks: 3". Okay, let's add them back to my pool ("main"):

Add Disks To:

New Pool
Existing Pool

...except there's no pools listed under "existing pool". If I create a new one it just wipes the disks. That's no bloody good.

Thankfully I've yet to store any important data on them as I'm still in the testing phase. As far as I can see though, despite the disks being attached to the system by serial number, it gets confused and doesn't keep them through power disruptions.

Is it worth fannying about with TrueNAS? I feel like I might as well just bin ZFS and use an rsync-based backing up of data (I have several other disks, but only three that are the same size).

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 2 points 2 weeks ago (1 children)

It seems to either be completely fine and a power cycle makes no difference - or it loses the whole structure. I don't know how I'm supposed to pull the disks back in. It doesn't seem to detect that they're already setup as part of a pool.

The pool I've created doesn't vanish but it seems my only option for it is "manage devices" which takes me to the "Add VDEVs to the Pool" menu where my three disks show up as unassigned. The only presented option seems to be to wipe them in order to add them back to the pool.

Trying to search for this stuff doesn't seem to give me anything useful. I don't know what the intended behaviour is and what it is that I'm doing wrong. I would expect what should happen is that the disks come back online and get automatically added back to the pool again but no, apparently not?

[–] [email protected] 2 points 2 weeks ago

Since ZFS keeps the config info on disk, I'm with another commenter wondering about your disk health.

Check the SMART data for each drive.