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Add more DDT tests

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The new Fast Dedup feature has a lot of moving parts, and only some of
them have tests. We have some tests for prefetch and quota, and a
generic ZAP shrinking test, but we don't have anything for the pruning
command or specific to DDT zap shrinking. Here we add a couple small new
tests for zpool ddtprune and DDT-specific ZAP shrinking.

Sponsored-by: Klara, Inc.
Sponsored-by: iXsystems, Inc.
Reviewed-by: Allan Jude <allan@klarasystems.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Paul Dagnelie <paul.dagnelie@klarasystems.com>
Closes #17049
This commit is contained in:
Paul Dagnelie
2025-03-04 17:02:34 -08:00
committed by GitHub
parent a44f423b00
commit fc460bfbaf
5 changed files with 183 additions and 1 deletions
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cmd/zdb/zdb.c
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@@ -2059,6 +2059,8 @@ dump_ddt_object(ddt_t *ddt, ddt_type_t type, ddt_class_t class)
if (dump_opt['D'] < 3)
return;
(void) printf("%s: object=%llu\n", name,
(u_longlong_t)ddt->ddt_object[type][class]);
zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
if (dump_opt['D'] < 4)