SOLVED after upgrade 9.1.1 to 9.3 missing dataset

[Denny]

hi all,
I'm using freenas as plex media server and pair with smartTV. After an update for plex at my tv, I have too upgrade the plex media server plugins.
Before upgrade I have 300gb of free space, then after I upgrade to 9.3, my dataset got no free space and cannot be accessed.

I upgraded it using the txz file from guy and upload to my pool.

anyone can help me fix this ?

thank you in advance

 

[danb35]

I see two major problems with your setup. The first is that your pool was way too full even before the upgrade. You should keep your pool under 80% of its capacity; you were at 97%. Bad things happen then, and when they do, it can be hard to recover. The second is that your pool consists of six striped disks with no redundancy--when one of those disks fails, you will lose all the data on your pool. I guess that's fine if you don't care about your data, but if you do you'll need to build a new pool.

On the capacity issue, you really need to free at least a TB of space. If the system will let you delete files, that's one way to go. If you have snapshots ('zfs list -t snapshot' will tell you), you can delete them and potentially free up some space that way. Or I guess you could compound your second problem and add yet another disk to the array.

 

[Denny]

Thanks danb35,
Finally I add another disk to the pool and restart the server, and my dataset is back online.
I didn't think that taking capacity more than 80% could cause problem like this.

thanks again

 

[danb35]

I've not seen it cause a dataset to disappear, but it's caused enough other problems that I can't say I'm surprised. Glad you're back up and running, but if you care about your data, you really need to migrate to a pool with some redundancy.