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5ee0f9c649
ddt_get_dedup_histogram() was actually checking it, just in an extremely cursed way. ddt_get_dedup_object_stats() wasn't, but wasn't being called from a dangerous place so no one noticed. These checks are necessary, because spa_ddt[] is not populated until spa_load(), but the spa can exist before that, while being created, and as vdevs and metaslabs are initialised the space accounting functions will be called to update pool space counts. Probably the whole create path doesn't need to go asking for space accounting from metadata subsystems until after the pool is created. This will at least catch misuse. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <rob.norris@klarasystems.com> Sponsored-by: Klara, Inc. Sponsored-by: iXsystems, Inc. Closes #15887 |
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