Fwd: Separate --block.wal --block.db bluestore not working as expected.

Gary Verhulp <garyv@xxxxxxxxxxxxxx> · Sat, 7 Apr 2018 08:59:31 -0700



        I’m trying
            to create bluestore osds with separate --block.wal
            --block.db devices on a write intensive SSD
         
        I’ve split
            the SSD (/dev/sda) into two partditions sda1 and sda2 for db
            and wal
         
         
        I seems to
            me the osd uuid is getting changed and I’m only able to
            start the last OSD
         
        Do I need
            to create a new partition or logical volume on the SSD for
            each OSD?
            
         
        I’m sure
            this is a simple fail in my understanding of how it is
            supposed to be provisioned. 
        Any advice
            would be appreciated.
         
        Thanks,
        Gary
         
         
        [root@osdhost
            osd]# ceph-volume lvm prepare --bluestore --data /dev/sdc
            --block.wal /dev/sda2 --block.db /dev/sda1
        Running
            command: sudo vgcreate --force --yes
            ceph-5a6b8ab6-ca12-4855-9a5a-a3a54c249034 /dev/sdc
        stdout:
            Physical volume "/dev/sdc" successfully created.
        stdout:
            Volume group "ceph-5a6b8ab6-ca12-4855-9a5a-a3a54c249034"
            successfully created
        Running
            command: sudo lvcreate --yes -l 100%FREE -n
            osd-block-9d7a103a-f590-4842-bd3d-e9da27c3fb09
            ceph-5a6b8ab6-ca12-4855-9a5a-a3a54c249034
        stdout:
            Logical volume
            "osd-block-9d7a103a-f590-4842-bd3d-e9da27c3fb09" created.
        Running
            command: sudo mount -t tmpfs tmpfs /var/lib/ceph/osd/ceph-1
        Running
            command: chown -R ceph:ceph /dev/dm-2
        Running
            command: sudo ln -s
/dev/ceph-5a6b8ab6-ca12-4855-9a5a-a3a54c249034/osd-block-9d7a103a-f590-4842-bd3d-e9da27c3fb09
            /var/lib/ceph/osd/ceph-1/block
        Running
            command: sudo ceph --cluster ceph --name
            client.bootstrap-osd --keyring
            /var/lib/ceph/bootstrap-osd/ceph.keyring mon getmap -o
            /var/lib/ceph/osd/ceph-1/activate.monmap
        stderr: got
            monmap epoch 1
        Running
            command: ceph-authtool /var/lib/ceph/osd/ceph-1/keyring
            --create-keyring --name osd.1 --add-key
            AQDjL8haKmzYOhAAM7ehRUUgF/n4x/Ybu7VR/g==
        stdout:
            creating /var/lib/ceph/osd/ceph-1/keyring
        stdout:
            added entity osd.1 auth auth(auid = 18446744073709551615
            key=AQDjL8haKmzYOhAAM7ehRUUgF/n4x/Ybu7VR/g== with 0 caps)
        Running
            command: chown -R ceph:ceph /var/lib/ceph/osd/ceph-1/keyring
        Running
            command: chown -R ceph:ceph /var/lib/ceph/osd/ceph-1/
        Running
            command: chown -R ceph:ceph /dev/sda2
        Running
            command: chown -R ceph:ceph /dev/sda1
        Running
            command: sudo ceph-osd --cluster ceph --osd-objectstore
            bluestore --mkfs -i 1 --monmap
            /var/lib/ceph/osd/ceph-1/activate.monmap --key
            ****************************************
            --bluestore-block-wal-path /dev/sda2
            --bluestore-block-db-path /dev/sda1 --osd-data
            /var/lib/ceph/osd/ceph-1/ --osd-uuid
            9d7a103a-f590-4842-bd3d-e9da27c3fb09 --setuser ceph
            --setgroup ceph
        stderr:
            2018-04-06 19:41:44.519662 7f734f2e4d00 -1
            bluestore(/var/lib/ceph/osd/ceph-1//block) _read_bdev_label
            unable to decode label at offset 102:
            buffer::malformed_input: void
            bluestore_bdev_label_t::decode(ceph::buffer::list::iterator&)
            decode past end of struct encoding
        stderr:
            2018-04-06 19:41:44.520939 7f734f2e4d00 -1
            bluestore(/var/lib/ceph/osd/ceph-1//block) _read_bdev_label
            unable to decode label at offset 102:
            buffer::malformed_input: void
            bluestore_bdev_label_t::decode(ceph::buffer::list::iterator&)
            decode past end of struct encoding
        stderr:
            2018-04-06 19:41:44.521190 7f734f2e4d00 -1
            bluestore(/var/lib/ceph/osd/ceph-1//block) _read_bdev_label
            unable to decode label at offset 102:
            buffer::malformed_input: void
            bluestore_bdev_label_t::decode(ceph::buffer::list::iterator&)
            decode past end of struct encoding
        stderr:
            2018-04-06 19:41:44.521454 7f734f2e4d00 -1
            bluestore(/var/lib/ceph/osd/ceph-1/) _read_fsid unparsable
            uuid
        stderr:
            2018-04-06 19:41:47.307648 7f734f2e4d00 -1 key
            AQDjL8haKmzYOhAAM7ehRUUgF/n4x/Ybu7VR/g==
        stderr:
            2018-04-06 19:41:48.068161 7f734f2e4d00 -1 created object
            store /var/lib/ceph/osd/ceph-1/ for osd.1 fsid
            1ff50434-64ad-42bd-9a70-1968e4a9a813
         
         
        [root@osdhost
            osd]# ceph-bluestore-tool show-label --dev /dev/sda1
        {
           
            "/dev/sda1": {
               
            "osd_uuid": "9d7a103a-f590-4842-bd3d-e9da27c3fb09",
               
            "size": 200043171840,
               
            "btime": "2018-04-06 19:41:44.523894",
               
            "description": "bluefs db"
            }
        }
         
        [root@osdhost
             osd]# ceph-volume lvm prepare --bluestore --data /dev/sdd
            --block.wal /dev/sda2 --block.db /dev/sda1
        Running
            command: sudo vgcreate --force --yes
            ceph-cc91203d-de5c-4d27-8c48-a58663075e67 /dev/sdd
        stdout:
            Physical volume "/dev/sdd" successfully created.
        stdout:
            Volume group "ceph-cc91203d-de5c-4d27-8c48-a58663075e67"
            successfully created
        Running
            command: sudo lvcreate --yes -l 100%FREE -n
            osd-block-eb6cbcb3-f644-4973-b745-0e4389ef719c
            ceph-cc91203d-de5c-4d27-8c48-a58663075e67
        stdout:
            Logical volume
            "osd-block-eb6cbcb3-f644-4973-b745-0e4389ef719c" created.
        Running
            command: sudo mount -t tmpfs tmpfs /var/lib/ceph/osd/ceph-6
        Running
            command: chown -R ceph:ceph /dev/dm-8
        Running
            command: sudo ln -s
/dev/ceph-cc91203d-de5c-4d27-8c48-a58663075e67/osd-block-eb6cbcb3-f644-4973-b745-0e4389ef719c
            /var/lib/ceph/osd/ceph-6/block
        Running
            command: sudo ceph --cluster ceph --name
            client.bootstrap-osd --keyring
            /var/lib/ceph/bootstrap-osd/ceph.keyring mon getmap -o
            /var/lib/ceph/osd/ceph-6/activate.monmap
        stderr: got
            monmap epoch 1
        Running
            command: ceph-authtool /var/lib/ceph/osd/ceph-6/keyring
            --create-keyring --name osd.6 --add-key
            AQA2MMha4FtRFRAAnWV4s4D7/Y9PVZpFBgoLpA==
        stdout:
            creating /var/lib/ceph/osd/ceph-6/keyring
        stdout:
            added entity osd.6 auth auth(auid = 18446744073709551615
            key=AQA2MMha4FtRFRAAnWV4s4D7/Y9PVZpFBgoLpA== with 0 caps)
        Running
            command: chown -R ceph:ceph /var/lib/ceph/osd/ceph-6/keyring
        Running
            command: chown -R ceph:ceph /var/lib/ceph/osd/ceph-6/
        Running
            command: chown -R ceph:ceph /dev/sda2
        Running
            command: chown -R ceph:ceph /dev/sda1
        Running
            command: sudo ceph-osd --cluster ceph --osd-objectstore
            bluestore --mkfs -i 6 --monmap
            /var/lib/ceph/osd/ceph-6/activate.monmap --key
            ****************************************
            --bluestore-block-wal-path /dev/sda2
            --bluestore-block-db-path /dev/sda1 --osd-data
            /var/lib/ceph/osd/ceph-6/ --osd-uuid
            eb6cbcb3-f644-4973-b745-0e4389ef719c --setuser ceph
            --setgroup ceph
        stderr:
            2018-04-06 19:43:06.855431 7f66aa9e1d00 -1
            bluestore(/var/lib/ceph/osd/ceph-6//block) _read_bdev_label
            unable to decode label at offset 102:
            buffer::malformed_input: void
            bluestore_bdev_label_t::decode(ceph::buffer::list::iterator&)
            decode past end of struct encoding
        stderr:
            2018-04-06 19:43:06.856732 7f66aa9e1d00 -1
            bluestore(/var/lib/ceph/osd/ceph-6//block) _read_bdev_label
            unable to decode label at offset 102:
            buffer::malformed_input: void
            bluestore_bdev_label_t::decode(ceph::buffer::list::iterator&)
            decode past end of struct encoding
        stderr:
            2018-04-06 19:43:06.856985 7f66aa9e1d00 -1
            bluestore(/var/lib/ceph/osd/ceph-6//block) _read_bdev_label
            unable to decode label at offset 102:
            buffer::malformed_input: void
            bluestore_bdev_label_t::decode(ceph::buffer::list::iterator&)
            decode past end of struct encoding
        stderr:
            2018-04-06 19:43:06.857229 7f66aa9e1d00 -1
            bluestore(/var/lib/ceph/osd/ceph-6/) _read_fsid unparsable
            uuid
        stderr:
            2018-04-06 19:43:09.643778 7f66aa9e1d00 -1 key
            AQA2MMha4FtRFRAAnWV4s4D7/Y9PVZpFBgoLpA==
        stderr:
            2018-04-06 19:43:10.404159 7f66aa9e1d00 -1 created object
            store /var/lib/ceph/osd/ceph-6/ for osd.6 fsid
            1ff50434-64ad-42bd-9a70-1968e4a9a813
            
         
        [root@osdhost
            osd]# ceph-bluestore-tool show-label --dev /dev/sda1
        {
           
            "/dev/sda1": {
               
            "osd_uuid": "eb6cbcb3-f644-4973-b745-0e4389ef719c",
               
            "size": 200043171840,
               
            "btime": "2018-04-06 19:43:06.859357",
               
            "description": "bluefs db"
            }
        }
        In this
            case I’ve made OSD 1 and OSD 6
            
        1 was first
            and I cannnot start it, but I can start 6
         
         
        In the OSD
            log for osd.1  it complains that sda1 fsid
            eb6cbcb3-f644-4973-b745-0e4389ef719c does not match our fsid
            9d7a103a-f590-4842-bd3d-e9da27c3fb09
         
        018-04-06
            19:45:43.397317 7fe91a9cfd00  0 set uid:gid to 1000:1000
            (ceph:ceph)
        2018-04-06
            19:45:43.397351 7fe91a9cfd00  0 ceph version 12.2.2
            (cf0baeeeeba3b47f9427c6c97e2144b094b7e5ba) luminous
            (stable), process (unknown), pid 145234
        2018-04-06
            19:45:43.402799 7fe91a9cfd00 -1 Public network was set, but
            cluster network was not set
            
        2018-04-06
            19:45:43.402807 7fe91a9cfd00 -1     Using public network
            also for cluster network
        2018-04-06
            19:45:43.408794 7fe91a9cfd00  0 pidfile_write: ignore empty
            --pid-file
        2018-04-06
            19:45:43.473264 7fe91a9cfd00  0 load: jerasure load: lrc
            load: isa
            
        2018-04-06
            19:45:43.473380 7fe91a9cfd00  1 bdev create path
            /var/lib/ceph/osd/ceph-1/block type kernel
        2018-04-06
            19:45:43.473394 7fe91a9cfd00  1 bdev(0x562bbfb82200
            /var/lib/ceph/osd/ceph-1/block) open path
            /var/lib/ceph/osd/ceph-1/block
        2018-04-06
            19:45:43.473802 7fe91a9cfd00  1 bdev(0x562bbfb82200
            /var/lib/ceph/osd/ceph-1/block) open size 1800358854656
            (0x1a32dc00000, 1676 GB) block_size 4096 (4096 B) rotational
        2018-04-06
            19:45:43.474000 7fe91a9cfd00  1
            bluestore(/var/lib/ceph/osd/ceph-1) _set_cache_sizes max 0.5
            < ratio 0.99
        2018-04-06
            19:45:43.474035 7fe91a9cfd00  1
            bluestore(/var/lib/ceph/osd/ceph-1) _set_cache_sizes
            cache_size 1073741824 meta 0.5 kv 0.5 data 0
        2018-04-06
            19:45:43.474045 7fe91a9cfd00  1 bdev(0x562bbfb82200
            /var/lib/ceph/osd/ceph-1/block) close
        2018-04-06
            19:45:43.729419 7fe91a9cfd00  1
            bluestore(/var/lib/ceph/osd/ceph-1) _mount path
            /var/lib/ceph/osd/ceph-1
        2018-04-06
            19:45:43.729695 7fe91a9cfd00  1 bdev create path
            /var/lib/ceph/osd/ceph-1/block type kernel
        2018-04-06
            19:45:43.729709 7fe91a9cfd00  1 bdev(0x562bbfb82a00
            /var/lib/ceph/osd/ceph-1/block) open path
            /var/lib/ceph/osd/ceph-1/block
        2018-04-06
            19:45:43.730019 7fe91a9cfd00  1 bdev(0x562bbfb82a00
            /var/lib/ceph/osd/ceph-1/block) open size 1800358854656
            (0x1a32dc00000, 1676 GB) block_size 4096 (4096 B) rotational
        2018-04-06
            19:45:43.730195 7fe91a9cfd00  1
            bluestore(/var/lib/ceph/osd/ceph-1) _set_cache_sizes max 0.5
            < ratio 0.99
        2018-04-06
            19:45:43.730208 7fe91a9cfd00  1
            bluestore(/var/lib/ceph/osd/ceph-1) _set_cache_sizes
            cache_size 1073741824 meta 0.5 kv 0.5 data 0
        2018-04-06
            19:45:43.730275 7fe91a9cfd00  1 bdev create path /dev/sda1
            type kernel
        2018-04-06
            19:45:43.730280 7fe91a9cfd00  1 bdev(0x562bbf831800
            /dev/sda1) open path /dev/sda1
        2018-04-06
            19:45:43.730477 7fe91a9cfd00  1 bdev(0x562bbf831800
            /dev/sda1) open size 200043171840 (0x2e93809000, 186 GB)
            block_size 4096 (4096 B) non-rotational
        2018-04-06
            19:45:43.730485 7fe91a9cfd00  1 bluefs add_block_device bdev
            1 path /dev/sda1 size 186 GB
        2018-04-06
            19:45:43.730515 7fe91a9cfd00 -1 bluestore(/dev/sda1)
            _check_or_set_bdev_label bdev /dev/sda1 fsid
            eb6cbcb3-f644-4973-b745-0e4389ef719c does not match our fsid
            9d7a103a-f590-4842-bd3d-e9da27c3fb09
        2018-04-06
            19:45:43.730522 7fe91a9cfd00 -1
            bluestore(/var/lib/ceph/osd/ceph-1) _open_db check block
            device(/dev/sda1) label returned: (5) Input/output error
        2018-04-06
            19:45:43.730539 7fe91a9cfd00  1 bdev(0x562bbf831800
            /dev/sda1) close
        2018-04-06
            19:45:43.984716 7fe91a9cfd00  1 bdev(0x562bbfb82a00
            /var/lib/ceph/osd/ceph-1/block) close
        2018-04-06
            19:45:44.234989 7fe91a9cfd00 -1 osd.1 0 OSD:init: unable to
            mount object store
      
      
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