Ubuntu VM Recovering Journal

[Zain]

Greetings.

I rebooted my server today without first turning off my VMs like I normally do. I wasn't sure if that was something I had to do but figured it was good practice - seems I might have been right. Now, when I go to boot up my Ubuntu VM, I am prompted with the screen below and am unsure how I can fix it.

How can I fix this? TIA!

 

[morganL]

Snapshots are your friend....rollback to a known good version.
These failures can happen if the VM's file system is not robust. What were you using?

 

[Zain]

I don't recall which file system I selected when performing the install. I believe I left it to the recommended/default, whatever that was.

I had to boot into the Live CD and then copy over the files I needed. I will be reinstalling Ubuntu shortly, which file system is recommended for the VM?

I will also be utilizing the snapshot function for these going forward...

Thanks.

 

[morganL]

Regular snapshots implemented by TrueNAS. An expert recommended EXT4 for the guest file system. Anyone else have a counter recommendation?

"Ext4 is the general answer inside a guest because it's the optimal combination of fastest-performance-inside-any-caching, lightweight, and yet at least has journalling on to give you basic protection against crashy things happening above and beyond doing host-level rollbacks to "sometime before everything went tits-up"."

 

[Zain]

Thanks.

EXT4 is what it would have been already. I'll just be a little more careful in the future, turning off my VMs manually before shutting down or restarting the server.