10406 large_dnode changes broke zfs recv of legacy stream
The large dnode changes from 8423 caused problems in zfs recv for a legacy stream. This manifests when attempting to mount the received stream, but the problem is in the receive code. We missed the following commit from ZoL which fixes this. commit da2feb42fb5c7a8c1e1cc67f7a880da9d8e97bc2 Author: Tom Caputi <email@example.com> Date: Thu Jun 28 17:55:11 2018 -0400 Fix 'zfs recv' of non large_dnode send streams Currently, there is a bug where older send streams without the DMU_BACKUP_FEATURE_LARGE_DNODE flag are not handled correctly. The code in receive_object() fails to handle cases where drro->drr_dn_slots is set to 0, which is always the case when the sending code does not support this feature flag. This patch fixes the issue by ensuring that that a value of 0 is treated as DNODE_MIN_SLOTS.
Author: Tom Caputi <firstname.lastname@example.org>