Re: Migrating filestore to bluestore using ceph-volume

[David Majchrzak <david@xxxxxxxxxx>]

Ran:

ceph auth del osd.0

ceph auth del osd.6

ceph auth del osd.7

ceph osd rm osd.0

ceph osd rm osd.6

ceph osd rm osd.7

which seems to have removed them.

Thanks for the help Reed!

Kind Regards,

David Majchrzak

26 jan. 2018 kl. 18:32 skrev David Majchrzak <david@xxxxxxxxxx>:

Thanks that helped!

Since I had already "halfway" created a lvm volume I wanted to start from the beginning and zap it.

Tried to zap the raw device but failed since --destroy doesn't seem to be in 12.2.2

http://docs.ceph.com/docs/master/ceph-volume/lvm/zap/

root@int1:~# ceph-volume lvm zap /dev/sdc --destroy

usage: ceph-volume lvm zap [-h] [DEVICE]

ceph-volume lvm zap: error: unrecognized arguments: --destroy

So i zapped it with the vg/lvm instead.

ceph-volume lvm zap /dev/ceph-efad7df8-721d-43d8-8d02-449406e70b90/osd-block-138ce507-f28a-45bf-814c-7fa124a9d9b9

However I run create on it since the LVM was already there.

So I zapped it with sgdisk and ran dmsetup remove. After that I was able to create it again.

However - each "ceph-volume lvm create" that I ran that failed, successfully added an osd to crush map ;)

So I've got this now:

root@int1:~# ceph osd df tree

ID CLASS WEIGHT  REWEIGHT SIZE  USE    AVAIL  %USE  VAR  PGS TYPE NAME

-1       2.60959        - 2672G  1101G  1570G 41.24 1.00   - root default

-2       0.87320        -  894G   369G   524G 41.36 1.00   -     host int1

 3   ssd 0.43660  1.00000  447G   358G 90295M 80.27 1.95 301         osd.3

 8   ssd 0.43660  1.00000  447G 11273M   436G  2.46 0.06  19         osd.8

-3       0.86819        -  888G   366G   522G 41.26 1.00   -     host int2

 1   ssd 0.43159  1.00000  441G   167G   274G 37.95 0.92 147         osd.1

 4   ssd 0.43660  1.00000  447G   199G   247G 44.54 1.08 173         osd.4

-4       0.86819        -  888G   365G   523G 41.09 1.00   -     host int3

 2   ssd 0.43159  1.00000  441G   193G   248G 43.71 1.06 174         osd.2

 5   ssd 0.43660  1.00000  447G   172G   274G 38.51 0.93 146         osd.5

 0             0        0     0      0      0     0    0   0 osd.0

 6             0        0     0      0      0     0    0   0 osd.6

 7             0        0     0      0      0     0    0   0 osd.7

I guess I can just remove them from crush,auth and rm them?

Kind Regards,

David Majchrzak

26 jan. 2018 kl. 18:09 skrev Reed Dier <reed.dier@xxxxxxxxxxx>:

This is the exact issue that I ran into when starting my bluestore conversion journey.

See my thread here: https://www.spinics.net/lists/ceph-users/msg41802.html

Specifying --osd-id causes it to fail.

Below are my steps for OSD replace/migrate from filestore to bluestore.

BIG caveat here in that I am doing destructive replacement, in that I am not allowing my objects to be migrated off of the OSD I’m replacing before nuking it.

With 8TB drives it just takes way too long, and I trust my failure domains and other hardware to get me through the backfills.

So instead of 1) reading data off, writing data elsewhere 2) remove/re-add 3) reading data elsewhere, writing back on, I am taking step one out, and trusting my two other copies of the objects. Just wanted to clarify my steps.

I also set norecover and norebalance flags immediately prior to running these commands so that it doesn’t try to start moving data unnecessarily. Then when done, remove those flags, and let it backfill.

systemctl stop ceph-osd@$ID.service

ceph-osd -i $ID --flush-journal

umount /var/lib/ceph/osd/ceph-$ID

ceph-volume lvm zap /dev/$ID

ceph osd crush remove osd.$ID

ceph auth del osd.$ID

ceph osd rm osd.$ID

ceph-volume lvm create --bluestore --data /dev/$DATA --block.db /dev/$NVME

So essentially I fully remove the OSD from crush and the osdmap, and when I add the OSD back, like I would a new OSD, it fills in the numeric gap with the $ID it had before.

Hope this is helpful.

Been working well for me so far, doing 3 OSDs at a time (half of a failure domain).

Reed

On Jan 26, 2018, at 10:01 AM, David <david@xxxxxxxxxx> wrote:

Hi!

On luminous 12.2.2

I'm migrating some OSDs from filestore to bluestore using the "simple" method as described in docs: http://docs.ceph.com/docs/master/rados/operations/bluestore-migration/#convert-existing-osds

Mark out and Replace.

However, at 9.: ceph-volume create --bluestore --data $DEVICE --osd-id $ID

it seems to create the bluestore but it fails to authenticate with the old osd-id auth.

(the command above is also missing lvm or simple)

I think it's related to this:

http://tracker.ceph.com/issues/22642

# ceph-volume lvm create --bluestore --data /dev/sdc --osd-id 0

Running command: sudo vgcreate --force --yes ceph-efad7df8-721d-43d8-8d02-449406e70b90 /dev/sdc

 stderr: WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!

 stdout: Physical volume "/dev/sdc" successfully created

 stdout: Volume group "ceph-efad7df8-721d-43d8-8d02-449406e70b90" successfully created

Running command: sudo lvcreate --yes -l 100%FREE -n osd-block-138ce507-f28a-45bf-814c-7fa124a9d9b9 ceph-efad7df8-721d-43d8-8d02-449406e70b90

 stderr: WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!

 stdout: Logical volume "osd-block-138ce507-f28a-45bf-814c-7fa124a9d9b9" created.

Running command: sudo mount -t tmpfs tmpfs /var/lib/ceph/osd/ceph-0

Running command: chown -R ceph:ceph /dev/dm-4

Running command: sudo ln -s /dev/ceph-efad7df8-721d-43d8-8d02-449406e70b90/osd-block-138ce507-f28a-45bf-814c-7fa124a9d9b9 /var/lib/ceph/osd/ceph-0/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-0/activate.monmap

 stderr: got monmap epoch 2

Running command: ceph-authtool /var/lib/ceph/osd/ceph-0/keyring --create-keyring --name osd.0 --add-key XXXXXXXX

 stdout: creating /var/lib/ceph/osd/ceph-0/keyring

 stdout: added entity osd.0 auth auth(auid = 18446744073709551615 key= XXXXXXXX with 0 caps)

Running command: chown -R ceph:ceph /var/lib/ceph/osd/ceph-0/keyring

Running command: chown -R ceph:ceph /var/lib/ceph/osd/ceph-0/

Running command: sudo ceph-osd --cluster ceph --osd-objectstore bluestore --mkfs -i 0 --monmap /var/lib/ceph/osd/ceph-0/activate.monmap --key **************************************** --osd-data /var/lib/ceph/osd/ceph-0/ --osd-uuid 138ce507-f28a-45bf-814c-7fa124a9d9b9 --setuser ceph --setgroup ceph

 stderr: 2018-01-26 14:59:10.039549 7fd7ef951cc0 -1 bluestore(/var/lib/ceph/osd/ceph-0//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: 2018-01-26 14:59:10.039744 7fd7ef951cc0 -1 bluestore(/var/lib/ceph/osd/ceph-0//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: 2018-01-26 14:59:10.039925 7fd7ef951cc0 -1 bluestore(/var/lib/ceph/osd/ceph-0//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: 2018-01-26 14:59:10.039984 7fd7ef951cc0 -1 bluestore(/var/lib/ceph/osd/ceph-0/) _read_fsid unparsable uuid

 stderr: 2018-01-26 14:59:11.359951 7fd7ef951cc0 -1 key XXXXXXXX

 stderr: 2018-01-26 14:59:11.888476 7fd7ef951cc0 -1 created object store /var/lib/ceph/osd/ceph-0/ for osd.0 fsid efad7df8-721d-43d8-8d02-449406e70b90

Running command: sudo ceph-bluestore-tool --cluster=ceph prime-osd-dir --dev /dev/ceph-efad7df8-721d-43d8-8d02-449406e70b90/osd-block-138ce507-f28a-45bf-814c-7fa124a9d9b9 --path /var/lib/ceph/osd/ceph-0

Running command: sudo ln -snf /dev/ceph-efad7df8-721d-43d8-8d02-449406e70b90/osd-block-138ce507-f28a-45bf-814c-7fa124a9d9b9 /var/lib/ceph/osd/ceph-0/block

Running command: chown -R ceph:ceph /dev/dm-4

Running command: chown -R ceph:ceph /var/lib/ceph/osd/ceph-0

Running command: sudo systemctl enable ceph-volume@lvm-0-138ce507-f28a-45bf-814c-7fa124a9d9b9

 stderr: Created symlink from /etc/systemd/system/multi-user.target.wants/ceph-volume@lvm-0-138ce507-f28a-45bf-814c-7fa124a9d9b9.service to /lib/systemd/system/ceph-volume@.service.

Running command: sudo systemctl start ceph-osd@0

ceph-osd.0.log shows:

2018-01-26 15:09:07.379039 7f545d3b9cc0  4 rocksdb: [/build/ceph-12.2.2/src/rocksdb/db/version_set.cc:2859] Recovered from manifest file:db/MANIFEST-000095 succeeded,manifest_file_number is 95, next_file_number is 97, last_sequence is 21, log_number is 0,prev_log_number is 0,max_column_family is 0

2018-01-26 15:09:07.379046 7f545d3b9cc0  4 rocksdb: [/build/ceph-12.2.2/src/rocksdb/db/version_set.cc:2867] Column family [default] (ID 0), log number is 94

2018-01-26 15:09:07.379087 7f545d3b9cc0  4 rocksdb: EVENT_LOG_v1 {"time_micros": 1516979347379083, "job": 1, "event": "recovery_started", "log_files": [96]}

2018-01-26 15:09:07.379091 7f545d3b9cc0  4 rocksdb: [/build/ceph-12.2.2/src/rocksdb/db/db_impl_open.cc:482] Recovering log #96 mode 0

2018-01-26 15:09:07.379102 7f545d3b9cc0  4 rocksdb: [/build/ceph-12.2.2/src/rocksdb/db/version_set.cc:2395] Creating manifest 98

2018-01-26 15:09:07.380466 7f545d3b9cc0  4 rocksdb: EVENT_LOG_v1 {"time_micros": 1516979347380463, "job": 1, "event": "recovery_finished"}

2018-01-26 15:09:07.381331 7f545d3b9cc0  4 rocksdb: [/build/ceph-12.2.2/src/rocksdb/db/db_impl_open.cc:1063] DB pointer 0x556ecb8c3000

2018-01-26 15:09:07.381353 7f545d3b9cc0  1 bluestore(/var/lib/ceph/osd/ceph-0) _open_db opened rocksdb path db options compression=kNoCompression,max_write_buffer_number=4,min_write_buffer_number_to_merge=1,recycle_log_file_num=4,write_buffer_size=268435456,writable_file_max_buffer_size=0,compaction_readahead_size=2097152

2018-01-26 15:09:07.381616 7f545d3b9cc0  1 freelist init

2018-01-26 15:09:07.381660 7f545d3b9cc0  1 bluestore(/var/lib/ceph/osd/ceph-0) _open_alloc opening allocation metadata

2018-01-26 15:09:07.381679 7f545d3b9cc0  1 bluestore(/var/lib/ceph/osd/ceph-0) _open_alloc loaded 447 G in 1 extents

2018-01-26 15:09:07.382077 7f545d3b9cc0  0 _get_class not permitted to load kvs

2018-01-26 15:09:07.382309 7f545d3b9cc0  0 <cls> /build/ceph-12.2.2/src/cls/cephfs/cls_cephfs.cc:197: loading cephfs

2018-01-26 15:09:07.382583 7f545d3b9cc0  0 _get_class not permitted to load sdk

2018-01-26 15:09:07.382827 7f545d3b9cc0  0 <cls> /build/ceph-12.2.2/src/cls/hello/cls_hello.cc:296: loading cls_hello

2018-01-26 15:09:07.385755 7f545d3b9cc0  0 _get_class not permitted to load lua

2018-01-26 15:09:07.386073 7f545d3b9cc0  0 osd.0 0 crush map has features 288232575208783872, adjusting msgr requires for clients

2018-01-26 15:09:07.386078 7f545d3b9cc0  0 osd.0 0 crush map has features 288232575208783872 was 8705, adjusting msgr requires for mons

2018-01-26 15:09:07.386079 7f545d3b9cc0  0 osd.0 0 crush map has features 288232575208783872, adjusting msgr requires for osds

2018-01-26 15:09:07.386132 7f545d3b9cc0  0 osd.0 0 load_pgs

2018-01-26 15:09:07.386134 7f545d3b9cc0  0 osd.0 0 load_pgs opened 0 pgs

2018-01-26 15:09:07.386137 7f545d3b9cc0  0 osd.0 0 using weightedpriority op queue with priority op cut off at 64.

2018-01-26 15:09:07.386580 7f545d3b9cc0 -1 osd.0 0 log_to_monitors {default=true}

2018-01-26 15:09:07.388077 7f545d3b9cc0 -1 osd.0 0 init authentication failed: (1) Operation not permitted

The old osd is still there.

# ceph osd tree

ID CLASS WEIGHT  TYPE NAME     STATUS    REWEIGHT PRI-AFF

-1       2.60458 root default

-2       0.86819     host int1

 0   ssd 0.43159         osd.0 destroyed        0 1.00000

 3   ssd 0.43660         osd.3        up  1.00000 1.00000

-3       0.86819     host int2

 1   ssd 0.43159         osd.1        up  1.00000 1.00000

 4   ssd 0.43660         osd.4        up  1.00000 1.00000

-4       0.86819     host int3

 2   ssd 0.43159         osd.2        up  1.00000 1.00000

 5   ssd 0.43660         osd.5        up  1.00000 1.00000

What's the best course of action? Purging osd.0, zapping the device again and creating without --osd-id set?

Kind Regards,

David Majchrzak

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com

_______________________________________________
ceph-users mailing list
ceph-users@xxxxxxxxxxxxxx
http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com