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108562344c
Before this change in case of any allocation error ZFS always fallen back to normal class. But with more of different classes available we migth want more sophisticated logic. For example, it makes sense to fall back from dedup first to special class (if it is allowed to put DDT there) and only then to normal, since in a pool with dedup and special classes populated normal class likely has performance characteristics unsuitable for dedup. This change implements general mechanism where fallback order is controlled by the same spa_preferred_class() as the initial class selection. And as first application it implements the mentioned dedup->special->normal fallbacks. I have more plans for it later. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Paul Dagnelie <pcd@delphix.com> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #17391 |
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| .. | ||
| os | ||
| sys | ||
| .gitignore | ||
| cityhash.h | ||
| libnvpair.h | ||
| libuutil_common.h | ||
| libuutil_impl.h | ||
| libuutil.h | ||
| libzdb.h | ||
| libzfs_core.h | ||
| libzfs.h | ||
| libzfsbootenv.h | ||
| libzutil.h | ||
| Makefile.am | ||
| thread_pool.h | ||
| zfeature_common.h | ||
| zfs_comutil.h | ||
| zfs_deleg.h | ||
| zfs_fletcher.h | ||
| zfs_namecheck.h | ||
| zfs_prop.h | ||
| zfs_valstr.h | ||