26 jan. 2018 kl. 18:09 skrev Reed Dier <reed.dier@xxxxxxxxxxx <mailto: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@$ID.service <mailto:ceph-osd@$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 <mailto: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 <mailto: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 <http://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 <http://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 <http://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 <http://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 <http://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 <http://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 <http://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
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