CEPH Device Class Incorrect

Mihai

Renowned Member
Dec 22, 2015
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We have a number of Dell Hosts with PERC H700 raid controllers.

We just installed some SSDs so we can use the ssd class ceph replicated rule, but the disks show a class of hdd instead of ssd.

Anyone run into this problem?
 
Ok, on this other post, I see that sometimes the devices do not get automatically added to the correct class, but unsuccessfully, as in that post.
 
The H700 is a RAID only card, I suppose you created a RAID0 for every disk? CEPH than has no idea of the real nature of the device behind. Keep your hands off from Megaraid cards for CEPH and ZFS.

Try to replace the H700 with an HBA.