Re: Error Creating OSD

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Thanks all,


Here is a link to our our command being executed: https://pastebin.com/iy8iSaKH



Here are the results from the command


Executed with debug enabled (after a zap with destroy)


[root@ceph-storage3 ~]# ceph-volume lvm create --bluestore --data /dev/sdu 
Running command: ceph-authtool --gen-print-key
Running command: ceph --cluster ceph --name client.bootstrap-osd --keyring /var/lib/ceph/bootstrap-osd/ceph.keyring -i - osd new 664894a8-530a-4557-b2f4-1af5b391f2b7
--> Was unable to complete a new OSD, will rollback changes
--> OSD will be fully purged from the cluster, because the ID was generated
Running command: ceph osd purge osd.140 --yes-i-really-mean-it
 stderr: purged osd.140
Traceback (most recent call last):
  File "/sbin/ceph-volume", line 6, in <module>
    main.Volume()
  File "/usr/lib/python2.7/site-packages/ceph_volume/main.py", line 37, in __init__
    self.main(self.argv)
  File "/usr/lib/python2.7/site-packages/ceph_volume/decorators.py", line 59, in newfunc
    return f(*a, **kw)
  File "/usr/lib/python2.7/site-packages/ceph_volume/main.py", line 153, in main
    terminal.dispatch(self.mapper, subcommand_args)
  File "/usr/lib/python2.7/site-packages/ceph_volume/terminal.py", line 182, in dispatch
    instance.main()
  File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/main.py", line 38, in main
    terminal.dispatch(self.mapper, self.argv)
  File "/usr/lib/python2.7/site-packages/ceph_volume/terminal.py", line 182, in dispatch
    instance.main()
  File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/create.py", line 74, in main
    self.create(args)
  File "/usr/lib/python2.7/site-packages/ceph_volume/decorators.py", line 16, in is_root
    return func(*a, **kw)
  File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/create.py", line 26, in create
    prepare_step.safe_prepare(args)
  File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/prepare.py", line 217, in safe_prepare
    self.prepare(args)
  File "/usr/lib/python2.7/site-packages/ceph_volume/decorators.py", line 16, in is_root
    return func(*a, **kw)
  File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/prepare.py", line 283, in prepare
    block_lv = self.prepare_device(args.data, 'block', cluster_fsid, osd_fsid)
  File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/prepare.py", line 193, in prepare_device
    if api.get_vg(vg_name=vg_name):
  File "/usr/lib/python2.7/site-packages/ceph_volume/api/lvm.py", line 334, in get_vg
    return vgs.get(vg_name=vg_name, vg_tags=vg_tags)
  File "/usr/lib/python2.7/site-packages/ceph_volume/api/lvm.py", line 429, in get
    raise MultipleVGsError(vg_name)
ceph_volume.exceptions.MultipleVGsError: Got more than 1 result looking for volume group: ceph-6a2e8f21-bca2-492b-8869-eecc995216cc



Rhian Resnick

Associate Director Middleware and HPC

Office of Information Technology


Florida Atlantic University

777 Glades Road, CM22, Rm 173B

Boca Raton, FL 33431

Phone 561.297.2647

Fax 561.297.0222

 image




From: Alfredo Deza <adeza@xxxxxxxxxx>
Sent: Saturday, April 14, 2018 8:45 AM
To: Rhian Resnick
Cc: ceph-users@xxxxxxxxxxxxxx
Subject: Re: Error Creating OSD
 


On Fri, Apr 13, 2018 at 8:20 PM, Rhian Resnick <rresnick@xxxxxxx> wrote:

Evening,

When attempting to create an OSD we receive the following error. 

[ceph-admin@ceph-storage3 ~]$ sudo ceph-volume lvm create --bluestore --data /dev/sdu
Running command: ceph-authtool --gen-print-key
Running command: ceph --cluster ceph --name client.bootstrap-osd --keyring /var/lib/ceph/bootstrap-osd/ceph.keyring -i - osd new c8cb8cff-dad9-48b8-8d77-6f130a4b629d
--> Was unable to complete a new OSD, will rollback changes
--> OSD will be fully purged from the cluster, because the ID was generated
Running command: ceph osd purge osd.140 --yes-i-really-mean-it
 stderr: purged osd.140
-->  MultipleVGsError: Got more than 1 result looking for volume group: ceph-6a2e8f21-bca2-492b-8869-eecc995216cc

Any hints on what to do? This occurs when we attempt to create osd's on this node. 

Can you use a paste site and get the /var/log/ceph/ceph-volume.log contents? Also, if you could try the same command but with:

CEPH_VOLUME_DEBUG=1

I think you are hitting two issues here:

1) Somehow `osd new` is not completing and failing
2) The `purge` command to wipe out the LV is getting multiple LV's and cannot make sure to match the one it used.

#2 definitely looks like something we are doing wrong, and #1 can have a lot of different causes. The logs would be tremendously helpful!


Rhian Resnick

Associate Director Middleware and HPC

Office of Information Technology


Florida Atlantic University

777 Glades Road, CM22, Rm 173B

Boca Raton, FL 33431

Phone 561.297.2647

Fax 561.297.0222

 image


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