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Fix dspace underflow bug

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Since spa_dspace accounts only normal allocation class space,
spa_nonallocating_dspace should do the same.  Otherwise we may get
negative overflow or respective assertion spa_update_dspace() if
removed special/dedup vdev is bigger than all normal class space.

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Allan Jude <allan@klarasystems.com>
Signed-off-by: Paul Dagnelie <paul.dagnelie@klarasystems.com>
Closes #17183
This commit is contained in:
Paul Dagnelie
2025-04-01 06:23:43 -07:00
committed by Tony Hutter
parent 12657df52a
commit 9f0be8fca0
3 changed files with 24 additions and 16 deletions
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include/sys/vdev.h
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@@ -100,6 +100,7 @@ extern boolean_t vdev_replace_in_progress(vdev_t *vdev);
extern void vdev_hold(vdev_t *);
extern void vdev_rele(vdev_t *);
void vdev_update_nonallocating_space(vdev_t *vd, boolean_t add);
extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg);
extern void vdev_metaslab_fini(vdev_t *vd);
extern void vdev_metaslab_set_size(vdev_t *);