Alexander Motin 53cbf06d68 Fix deduplication of overridden blocks ...

Implementation of DDT pruning introduced verification of DVAs in
a block pointer during ddt_lookup() to not by mistake free previous
pruned incarnation of the entry.  But when writing a new block in
zio_ddt_write() we might have the DVAs only from override pointer,
which may never have "D" flag to be confused with pruned DDT entry,
and we'll abandon those DVAs if we find a matching entry in DDT.

This fixes deduplication for blocks written via dmu_sync() for
purposes of indirect ZIL write records, that I have tested.  And
I suspect it might actually allow deduplication for Direct I/O,
even though in an odd way -- first write block directly and then
delete it later during TXG commit if found duplicate, which part
I haven't tested.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #17120

2025-04-02 17:05:24 -07:00

..

Makefile.am

build: rename FORCEDEBUG_CPPFLAGS to LIBZPOOL_CPPFLAGS

2024-08-27 12:53:27 -07:00

zdb_il.c

zdb_il: use flex array member to access ZIL records

2024-12-05 09:33:21 -08:00

zdb.c

Fix deduplication of overridden blocks

2025-04-02 17:05:24 -07:00

zdb.h

Replace dead opensolaris.org license link

2022-07-11 14:16:13 -07:00