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44446dccdb
This also includes removing L2 vdevs asynchronously. This commit also guarantees that spa_load_guid is unique. The zpool reguid feature introduced the spa_load_guid, which is a transient value used for runtime identification purposes in the ARC. This value is not the same as the spa's persistent pool guid. However, the value is seeded from spa_generate_load_guid() which does not check for uniqueness against the spa_load_guid from other pools. Although extremely rare, you can end up with two different pools sharing the same spa_load_guid value! So we guarantee that the value is always unique and additionally not still in use by an async arc flush task. Sponsored-by: Klara, Inc. Sponsored-by: Wasabi Technology, Inc. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Allan Jude <allan@klarasystems.com> Signed-off-by: Don Brady <don.brady@klarasystems.com> Closes #16215 |
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