mirror of https://github.com/ceph/ceph-ansible.git
28 lines
925 B
ReStructuredText
28 lines
925 B
ReStructuredText
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OSD Scenarios
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=============
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lvm_osds
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--------
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This OSD scenario uses ``ceph-volume`` to create OSDs from logical volumes and
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is only available when the ceph release is Luminous or greater.
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.. note::
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The creation of the logical volumes is not supported by ceph-ansible, ceph-volume
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only creates OSDs from existing logical volumes.
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Use ``lvm_osds:true`` to enable this scenario. Currently we only support dedicated journals
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when using lvm, not collocated journals.
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To configure this scenario use the ``lvm_volumes`` config option. ``lvm_volumes`` is a dictionary whose
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key/value pairs represent a data lv and a journal pair. Journals can be either a lv, device or partition.
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You can not use the same journal for many data lvs.
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For example, a configuration to use ``lvm_osds`` would look like::
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lvm_osds: true
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lvm_volumes:
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data-lv1: journal-lv1
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data-lv2: /dev/sda
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data:lv3: /dev/sdb1
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