https://github.com/ceph/ceph/blob/master/udev/95-ceph-osd.rules Lists the 4 variants, in your case it sounds like a normal ceph volume so the guid you want is probably 4fbd7e29-9d25-41b8-afd0-062c0ceff05d.
You will need sgdisk to set the guid correctly (part of gdisk)from man-t, --typecode=partnum:{hexcode|GUID}Change a single partition's type code. You enter the type codeusing either a two-byte hexadecimal number, as described ear‐lier, or a fully-specified GUID value, such asEBD0A0A2-B9E5-4433-87C0-68B6B72699C7.your exec should look likesgdisk --typecode=4:4fbd7e29-9d25-41b8-afd0-062c0ceff05d /dev/sda
Wow! That's well hidden!
I've only had a cursory look at ceph-deploy's underlying code -- is this a feature missing from there, or is there a reason it's left out of the "osd prepare" phase?
It would be good to either document this on the ceph-deploy quickstart page or incorporate it into ceph-deploy. I can confirm sgdisk is in the path on login.
Matthew
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