Blinking lights is new feature present in the Ceph orchestrators (Cephadm and Rook). This feature allows the user to switch on/off the identification/fail lights in physical devices using the following command: > ceph device light on|off <devid> {ident|fault} {--force} Being <devid> the UDEV device identification, that can be seen using (apart of other UDEV commands): > ceph device ls The implementation used in Cephadm and Rook uses the "lsmcli" command from the libStorageMgmt library: This library has been tested with the current set of hardware: https://libstorage.github.io/libstoragemgmt-doc/doc/user_guide.html#supported-hardware So what we expect is that this functionality will support the same set of devices. A complete testing with the downstream hardware platforms will be needed in order to be sure that we fully support this functionality.
Please specify the severity of this bug. Severity is defined here: https://bugzilla.redhat.com/page.cgi?id=fields.html#bug_severity.
Hi Juan, This feature is intended for rook only or is it available in cephadm with 5.0?
This feature is available in both orchestrators (cephadm , rook).( But not working properly in Rook in Pacific/RHCS5 because Physical disk management has been deprecated for the moment.) See that in the upstream documentation: https://docs.ceph.com/en/latest/rados/operations/devices/#identifying-physical-devices Also it is now available from the Ceph dashboard - Physical disks - Identify using cephadm must work without problems, but the hardware (hard disks) must be compatible: Excerpt of my first comment in this bug: >The implementation used in Cephadm and Rook uses the "lsmcli" command from the libStorageMgmt library: >This library has been tested with the current set of hardware: >https://libstorage.github.io/libstoragemgmt-doc/doc/user_guide.html#supported-hardware