Re: ceph-disk activate-block: not a block device

[Roger Brown <rogerpbrown@xxxxxxxxx>]

Also I'm just noticing osd1 is my only OSD host that even has an enabled target for ceph-disk (ceph-disk@dev-sdb2.service).

roger@osd1:~$ systemctl list-units ceph*

  UNIT                       LOAD   ACTIVE SUB     DESCRIPTION

● ceph-disk@dev-sdb2.service loaded failed failed  Ceph disk activation: /dev/sdb2

  ceph-osd@3.service         loaded active running Ceph object storage daemon osd.3

  ceph-mds.target            loaded active active  ceph target allowing to start/stop all ceph-mds@.service instances at once

  ceph-mgr.target            loaded active active  ceph target allowing to start/stop all ceph-mgr@.service instances at once

  ceph-mon.target            loaded active active  ceph target allowing to start/stop all ceph-mon@.service instances at once

  ceph-osd.target            loaded active active  ceph target allowing to start/stop all ceph-osd@.service instances at once

  ceph-radosgw.target        loaded active active  ceph target allowing to start/stop all ceph-radosgw@.service instances at once

  ceph.target                loaded active active  ceph target allowing to start/stop all ceph*@.service instances at once

roger@osd2:~$ systemctl list-units ceph*

UNIT                LOAD   ACTIVE SUB     DESCRIPTION

ceph-osd@4.service  loaded active running Ceph object storage daemon osd.4

ceph-mds.target     loaded active active  ceph target allowing to start/stop all ceph-mds@.service instances at once

ceph-mgr.target     loaded active active  ceph target allowing to start/stop all ceph-mgr@.service instances at once

ceph-mon.target     loaded active active  ceph target allowing to start/stop all ceph-mon@.service instances at once

ceph-osd.target     loaded active active  ceph target allowing to start/stop all ceph-osd@.service instances at once

ceph-radosgw.target loaded active active  ceph target allowing to start/stop all ceph-radosgw@.service instances at once

ceph.target         loaded active active  ceph target allowing to start/stop all ceph*@.service instances at once

roger@osd3:~$ systemctl list-units ceph*

UNIT                LOAD   ACTIVE SUB     DESCRIPTION

ceph-osd@0.service  loaded active running Ceph object storage daemon osd.0

ceph-mds.target     loaded active active  ceph target allowing to start/stop all ceph-mds@.service instances at once

ceph-mgr.target     loaded active active  ceph target allowing to start/stop all ceph-mgr@.service instances at once

ceph-mon.target     loaded active active  ceph target allowing to start/stop all ceph-mon@.service instances at once

ceph-osd.target     loaded active active  ceph target allowing to start/stop all ceph-osd@.service instances at once

ceph-radosgw.target loaded active active  ceph target allowing to start/stop all ceph-radosgw@.service instances at once

ceph.target         loaded active active  ceph target allowing to start/stop all ceph*@.service instances at once

On Thu, Jul 20, 2017 at 10:23 AM Roger Brown <rogerpbrown@xxxxxxxxx> wrote:

I think I need help with some OSD trouble. OSD daemons on two hosts started flapping. At length, I rebooted host osd1 (osd.3), but the OSD daemon still fails to start. Upon closer inspection, ceph-disk@dev-sdb2.service is failing to start due to, "Error: /dev/sdb2 is not a block device"

This is the command I see it failing to run: 

roger@osd1:~$ sudo /usr/sbin/ceph-disk --verbose activate-block /dev/sdb2

Traceback (most recent call last):

  File "/usr/sbin/ceph-disk", line 9, in <module>

    load_entry_point('ceph-disk==1.0.0', 'console_scripts', 'ceph-disk')()

  File "/usr/lib/python2.7/dist-packages/ceph_disk/main.py", line 5731, in run

    main(sys.argv[1:])

  File "/usr/lib/python2.7/dist-packages/ceph_disk/main.py", line 5682, in main

    args.func(args)

  File "/usr/lib/python2.7/dist-packages/ceph_disk/main.py", line 5438, in <lambda>

    func=lambda args: main_activate_space(name, args),

  File "/usr/lib/python2.7/dist-packages/ceph_disk/main.py", line 4160, in main_activate_space

    osd_uuid = get_space_osd_uuid(name, dev)

  File "/usr/lib/python2.7/dist-packages/ceph_disk/main.py", line 4115, in get_space_osd_uuid

    raise Error('%s is not a block device' % path)

ceph_disk.main.Error: Error: /dev/sdb2 is not a block device

osd1 environment:

$ ceph -v

ceph version 12.1.1 (f3e663a190bf2ed12c7e3cda288b9a159572c800) luminous (rc)

$ uname -r

4.4.0-83-generic

$ lsb_release -sc

xenial

Please advise.

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