Feature #3807: crush: simple commands to create common rules - RADOS - Ceph

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Feature #3807

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crush: simple commands to create common rules

Added by Sage Weil over 11 years ago. Updated almost 7 years ago.

Status:

Resolved

Priority:

High

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Description

These should be in CrushWrapper or similar, and available via crushtool and via some 'ceph osd crush ...' commands.

Even something like "ceph osd rule add take default chooseleaf host emit" is way better than exporting/decompiling/editing/compiling/inserting the map.

Or 'ceph osd rule new simple root=default failure_domain=host'.

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Updated by Sage Weil over 11 years ago

Priority changed from Normal to High

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Updated by Sage Weil about 11 years ago

ceph osd crush rule list
ceph osd crush rule create-simple <name> <root> <failure domain>
ceph osd crush rule create-complex <name> [ruleset=<ruleset>] <steps ...>
step is
take <name>
chooseleaf [<number>] <type>
emit
ceph osd crush rule rm <name>
(will verify it is not in use)

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