Hi Kris,

On 6/18/23 08:29, K Scott wrote:

My / is also space_cache=v2. As far as I know, it's a device-wide setting, so you can't set it on a per-subvolume basis.

I didn't really "migrate" I just backed up my data, reformatted the drive, and then put everything back.

Thanks!

I agree that you can't set it per-subvolume but from my reading different btrfs filesystems can be using different settings.

As I test I created a new btrfs file system using a loop back device and that was setup using space-cache=v2 while my root fs is still using v1.

I wondering a TW update will do the root fs conversion at some point or if there is a reason they are holding back ?

Converting the non-root fs looks pretty easy but it seems the root one must be done at boot time or by booting off a live DVD and depending on the size it could take a while.

What are you using to backup your rootfs and all the subvolumes that the installation creates and then putting it all back?

Regards,

Joe