Ceph » Orchestrator

This issue came up on a system with a 4KB virtual floppy disk drive.

ceph-volume inventory gives:

Device Path               Size         rotates available Model name
/dev/fd0                  4.00 KB      True    False     
/dev/sda                  50.00 GB     True    False     Virtual disk
/dev/sdb                  50.00 GB     True    False     Virtual disk
/dev/sdc                  50.00 GB     True    False     Virtual disk
/dev/sdd                  50.00 GB     True    False     Virtual disk

Doing a simple ceph orch apply osd --all-available-devices works just fine, but service specs utilising size specifiers will fail to apply. For example:

service_id: at_least_8g
service_type: osd
placement:
  host_pattern: '*'
spec:
  data_devices:
    size: '8G:'

Applying the above will give the following error in ceph log last cephadm:

ceph.deployment.drive_group.DriveGroupValidationError: Failed to validate OSD spec "at_least_8g.data_devices": Unit 'KB' not supported

The problem is that the SizeMatcher class only understands MB, GB and TB. When presented with a disk whose size is expressed in KB, it doesn't know what to do with it.