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047116ac76
Currently, when a raw zfs send file includes a DRR_OBJECT record that would decrease the number of levels of an existing object, the object is reallocated with dmu_object_reclaim() which creates the new dnode using the old object's nlevels. For non-raw sends this doesn't really matter, but raw sends require that nlevels on the receive side match that of the send side so that the checksum-of-MAC tree can be properly maintained. This patch corrects the issue by freeing the object completely before allocating it again in this case. This patch also corrects several issues with dnode_hold_impl() and related functions that prevented dnodes (particularly multi-slot dnodes) from being reallocated properly due to the fact that existing dnodes were not being fully cleaned up when they were freed. This patch adds a test to make sure that zfs recv functions properly with incremental streams containing dnodes of different sizes. Reviewed by: Matthew Ahrens <mahrens@delphix.com> Reviewed-by: Jorgen Lundman <lundman@lundman.net> Signed-off-by: Tom Caputi <tcaputi@datto.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #6821 Closes #6864 |
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