Re: KVM on top of BTRFS

[steamraven <steamraven@yahoo.com>]

> 
> Seems a little unfair on btrfs to just to look at absolutes in this context.
> Prior reports said that the fs ground to a halt,
> it isn't doing that by any stretch.


I agree.  What I am mostly looking for is the best setup 
for using KVM snapshots: 

KVM qcow2 on top of something like ext4  or
raw on top of btrfs


> 
> I haven't let any of these installs complete and used it as intended.
> So that's what I intend to do next; after all one doesn't install every day.
> 

I am going to try to benchmark a couple variations and flags
qcow2 on ext4  (noatime)
raw on btrfs (defaults)
raw on btrfs (noatime,space_cache)
raw on btrfs (noatime,nospace_cache)
raw on btrfs (noatime,nodatacow)

Any other options that might be good to try?