On 4/6/20 10:59 AM, Josef Bacik wrote:
With the delayed ref throttling patches I started getting a lot of
"parent transid mismatch" messages when running my snapshot+balance
torture test. This turned out to be because we will unconditionally set
the generation of a relocated tree block to the current transaction.
This is generally true, but especially for mid-tree nodes we could have
cow'ed the block in a previous transaction, and only actually update
it's parents in a completely different transaction. Thus we end up with
a parent transid that is in the future of the actual block. Fix this by
using the generation for the extent buffer we're pointing to.
Fixes: 5d4f98a28c7d ("Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)")
Signed-off-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
Dave hold off on this, there's something odd happening that I need to figure
out. Thanks,
Josef
