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Handle new dnode size in incremental backup stream

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When receiving an incremental backup stream, call
dmu_object_reclaim_dnsize() if an object's dnode size differs between
the incremental source and target. Otherwise it may appear that a
dnode which has shrunk is still occupying slots which are in fact
free. This will cause a failure to receive new objects that should
occupy the now-free slots.

Add a test case to verify that an incremental stream containing
objects with changed dnode sizes can be received without error. This
test case fails without this change.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ned Bass <bass6@llnl.gov>
Closes #6366 
Closes #6576
This commit is contained in:
Ned Bass
2017-09-05 16:09:15 -07:00
committed by Brian Behlendorf
parent c8811dec70
commit 65dcb0f67a
4 changed files with 73 additions and 4 deletions
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tests/runfiles/linux.run
+1 -1
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@@ -520,7 +520,7 @@ tests = ['rsend_001_pos', 'rsend_002_pos', 'rsend_003_pos', 'rsend_004_pos',
'send-c_lz4_disabled', 'send-c_recv_lz4_disabled',
'send-c_mixed_compression', 'send-c_stream_size_estimate', 'send-cD',
'send-c_embedded_blocks', 'send-c_resume', 'send-cpL_varied_recsize',
'send-c_recv_dedup', 'send_encrypted_heirarchy']
'send-c_recv_dedup', 'send_encrypted_heirarchy', 'send_changed_dnodesize']
[tests/functional/scrub_mirror]
tests = ['scrub_mirror_001_pos', 'scrub_mirror_002_pos',