Unfortunately, neither of those things will work. because ceph orch daemon add does not have a syntax that lets me add an SSD as a journal to a HDD and likewise ceph orch apply osd --all-available-devices will not do the right thing. both for mixed ssd/hdd.. but also, even though I have a lovely deployspec that does data_devices: rotational: 1 db_devices: rotational: 0 and works WONDERFULLY if you are giving it brand new unused SSDS and HDDS.... (it will actually carve up the SSD into lvns based on how many HDDS are present)... I dont think it works when 7/8 devices are already configured, and the SSD is already mostly sliced. ----- Original Message ----- From: "Stefan Kooman" <stefan@bit.nl> To: "Philip Brown" <pbrown@medata.com> Cc: "ceph-users" <ceph-users@ceph.io> Sent: Friday, March 19, 2021 11:34:58 AM Subject: Re: [ceph-users] ceph octopus mysterious OSD crash So make sure everything is destroyed from this device. ceph orch daemon add osd hostname:/dev/device or ceph orch apply osd --all-available-devices