On Tue, Feb 20, 2018 at 07:38:54PM -0800, Darrick J. Wong wrote:

From: Darrick J. Wong <redacted>

During log recovery, the per-AG reservations aren't yet set up, so log
recovery has to reserve enough blocks to handle all possible btree
splits.

Reported-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Darrick J. Wong <redacted>

This appears to have fixed all the random recovery failures I was
having through fstests. The logic seems sounds, too, so

Reviewed-by: Dave Chinner <redacted>

-- 
Dave Chinner
david@fromorbit.com