Hi guys,
It seems that btrfs v4.12.1 allows:
(1) btrfs send -p <ro-snap-1> <ro-snap-0>
but disallows
(2) btrfs send <ro-snap-0> -p <ro-snap-1>
Code-wise it assumes that <ro-snap-1> is always found at optind == 1. I was
about to patch this but I'm not sure which way we'd like to go with this:
Actually only allow (1) and block (2) properly or allow both. In any case, this
seems to me like a pretty serious regression and we'd like to get this settled
soon. :)
Thanks!
Christian
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