Weird, never had that so far. Didn't it tell you what the issue is? Like is usually the case with verbose Linux OS..
Default is Btrfs, but it asks you during installation what you want to use.
Something similar happened once with debian os, but there was a clear message for unsupported hardware, so I just used nonfree version and it worked like a charm.
So you are using Btrfs or Ext4... and did you notice any difference, especially running Bitcoin node?
Pretty sure I'm using Btrfs now (SSD) and used it before (HDD). Since switching to the SSD, electrum replies over Tor are much faster, but I don't think it has anything to do with the file system. I did have ext4 on that machine before, but with Debian. It ran worse, but I think more due to the OS.