Re: 2 OSD's per drive , unable to start the osd's

Burkhard Linke <Burkhard.Linke@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> · Fri, 16 Dec 2016 10:09:07 +0100



    Hi,

    
    On 12/16/2016 09:22 AM,
      sandeep.coolboy@xxxxxxxxx wrote:

    
      Hi,
        

        I was trying the scenario where i have partitioned my drive
          (/dev/sdb) into 4 (sdb1, sdb2 , sdb3, sdb4) using the sgdisk
          utility:
        

        # sgdisk -z /dev/sdb
        # sgdisk -n 1:0:+1024 /dev/sdb -c 1:"ceph journal"
        # sgdisk -n 1:0:+1024 /dev/sdb -c 2:"ceph journal"

        
        # sgdisk -n 1:0:+4096 /dev/sdb -c 3:"ceph data"

        
        # sgdisk -n 1:0:+4096 /dev/sdb -c 3:"ceph data"

        
        checked the partition with lsblk and it has created the
          partitions as expected.
        

        im using the ceph-disk command to create the osd's:

        
        # ceph-disk prepare --cluster ceph /dev/sdb3 /dev/sdb1
        prepare_device: OSD will not be hot-swappable if journal is
          not the same device as the osd data

          prepare_device: Journal /dev/sdb1 was not prepared with
          ceph-disk. Symlinking directly.

          set_data_partition: incorrect partition UUID:
          0fc63daf-8483-4772-8e79-3d69d8477de4, expected
          ['4fbd7e29-9d25-41b8-afd0-5ec00ceff05d',
          '4fbd7e29-9d25-41b8-afd0-062c0ceff05d',
          '4fbd7e29-8ae0-4982-bf9d-5a8d867af560',
          '4fbd7e29-9d25-41b8-afd0-35865ceff05d']

        
    *snipsnap*

    
    CEPH OSD and journal partitions have a certain partition type UUID,
    as the message suggests. To avoid problems with OSD autodetection at
    boot time you need to change the UUID.

    
    Regards,

    Burkhard
  

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