Failed to import any pool on this device(5) caused by space_cache

@g6094199 Hello again.

Nice find, thanks for posting.

We are only just at 4.12 kernel as of current testing channel release:

But I agree that the inclusion of space_cache=v2 is a good idea:

This is something I can’t agree with however. We essentially follow the lead re btrfs devs on all defaults so upon our elrepo kernel-ml version adopting this by default then as do we. I don’t think it is wise to deviate from the developer ascribed defaults. Apologies if I have the wrong end of the stick here.

Hope that helps and thanks for your ongoing contribution.

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