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zdb: include cloned blocks in block statistics

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This gives `zdb -b` support for clone blocks.

Previously, it didn't know what clones were, so would count their space
allocation multiple times and then report leaked space (or, in debug,
would assert trying to claim blocks a second time).

This commit fixes those bugs, and reports the number of clones and the
space "used" (saved) by them.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Kay Pedersen <mail@mkwg.de>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Sponsored-By: OpenDrives Inc.
Sponsored-By: Klara Inc.
Closes #15123
This commit is contained in:
Rob N
2023-08-02 01:56:30 +10:00
committed by Brian Behlendorf
parent 4a104ac047
commit 12f2b1f65e
3 changed files with 108 additions and 1 deletions
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include/sys/brt.h
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@@ -36,6 +36,7 @@ extern "C" {
#endif
extern boolean_t brt_entry_decref(spa_t *spa, const blkptr_t *bp);
extern uint64_t brt_entry_get_refcount(spa_t *spa, const blkptr_t *bp);
extern uint64_t brt_get_dspace(spa_t *spa);
extern uint64_t brt_get_used(spa_t *spa);