45 lines
1.4 KiB
Markdown
45 lines
1.4 KiB
Markdown
+++
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title = "setting zpool features"
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date = "2014-12-10T13:40:27+00:00"
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author = "Gibheer"
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draft = false
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+++
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Before SUN was bought by Oracle, OpenSolaris had ever newer versions and
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upgrading was just an
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$ zpool upgrade rpool
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away. But since then, the open source version of ZFS gained feature flags.
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POOL FEATURE
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---------------
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tank1
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multi_vdev_crash_dump
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enabled_txg
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hole_birth
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extensible_dataset
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embedded_data
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bookmarks
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filesystem_limits
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If you want to enable only one of these features, you may have already hit the
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problem, that `zpool upgrade` can only upgrade one pool or all.
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The way to go is to use `zpool set`. Feature flags are options on the pool and
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can also be listed with `zpool get`.
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$ zpool get all tank1 | grep feature
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tank1 feature@async_destroy enabled local
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tank1 feature@empty_bpobj active local
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tank1 feature@lz4_compress active local
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tank1 feature@multi_vdev_crash_dump disabled local
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...
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Enabling a feature, for example _multi_vdev_crash_dump_, would then be
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$ zpool set feature@multi_vdev_crash_dump=enabled tank1
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It will then disappear from the `zpool upgrade` output and be set to enabled
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active in `zpool get`.
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