Good morning all,
Last week I started converting my filestore based OSDs to bluestore
using the following steps assembled from documentation and mailing list:
admin: ceph osd out ${OSD_ID}
on stor-node:
systemctl kill ceph-osd@${OSD_ID}
umount /var/lib/ceph/osd/ceph-${OSD_ID}
ceph-disk zap /dev/sdX
ceph-volume lvm zap /dev/sdx
on admin:
ceph osd destroy ${OSD_ID} --yes-i-really-mean-it
ceph osd purge ${OSD_ID} --yes-i-really-mean-it
on stor-node:
ceph-volume lvm prepare --bluestore --data /dev/sde --block.db /dev/sdc1
systemctl start ceph-osd@${OSD_ID}
However, after a reboot of the storage node, none of the OSD's are
starting. I noticed that the tmpfs based filesystems mounted on
/var/lib/ceph/osd/ceph-X prior to reboot do not exist. Did I miss a
step when converting to bluestore? Was there a missed step when
converting to ceph-volume?
The documentation step for ceph-volume does mention an activation step
that didn't appear needed after the above prepare (the OSD mounted and
started recovery when the "systemctl start ceph-osd@0" was issued.
Note: I can see all of the lvm volumes on the storage node:
# pvscan
PV /dev/sdg VG ceph-9854968e-659b-432a-b816-8ce3400e90d3 lvm2
[<2.73 TiB / 0 free]
PV /dev/sdi VG ceph-08abf9b3-fae0-4113-b889-0bb218e6d613 lvm2
[<2.73 TiB / 0 free]
PV /dev/sdh VG ceph-cddd89e5-87b2-4d8a-b905-03bd7c50a429 lvm2
[<2.73 TiB / 0 free]
PV /dev/sde VG ceph-baa8d599-02ab-4a55-9b2f-a82fef253df8 lvm2
[<2.73 TiB / 0 free]
PV /dev/sdf VG ceph-2ea66a6f-762d-4f46-8ec9-ff9f4a114ef9 lvm2
[<2.73 TiB / 0 free]
PV /dev/sdk VG ceph-6bb12ce7-042b-4ffe-bf7a-62296dc36fa2 lvm2
[<2.73 TiB / 0 free]
PV /dev/sdl VG ceph-7a6a54c9-664f-499a-83ad-7396d801ab3f lvm2
[<2.73 TiB / 0 free]
PV /dev/sdj VG ceph-50effcbd-a926-4a7f-bb00-62a6fa5b6aec lvm2
[<2.73 TiB / 0 free]
But if I issue the following it just hangs/timeouts:
systemctl start ceph-volume@lvm-0-baa8d599-02ab-4a55-9b2f-a82fef253df8
Any assistance would be appreciated.
Gary
--
Gary Molenkamp Computer Science/Science Technology Services
Systems Administrator University of Western Ontario
molenkam@xxxxxx http://www.csd.uwo.ca
(519) 661-2111 x86882 (519) 661-3566
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