[SOLVED] Crush rule: Error EINVAL: device class hdd does not exist

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vincentjanv

Member
Apr 29, 2020
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Hi all,

in order to prepare for some new HDD's to supplement our SSD's , I'm trying to creating a new crush rule. This works for 'ssd' but not for 'hdd' .

Bash: 
ceph osd crush rule create-replicated replicated-hdd default host hdd
returns the following error:

Code: 
Error EINVAL: device class hdd does not exist

Could it be because I do not have any HDDs installed at the moment, only SSDs?
 
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