I've tried to reproduce the problem on a VM (that uses ZFS as rootfs)
setting up a single-node ceph cluster, but OSD is coming up correctly:
$ sudo ceph -s | grep osd
osd: 1 osds: 1 up (since 50m), 1 in (since 59m)
Could you provide more details about your particular ceph configuration
/ infrastructure, so that I can try to reproduce the problem in an
environment more similar to yours? Thanks.
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https://bugs.launchpad.net/bugs/1881747
Title:
cephadm does not work with zfs root
Status in zfs-linux package in Ubuntu:
New
Bug description:
When trying to install ceph on ubuntu 20.04 with zfs as root file
system the OSD's do not come up.
The OSD's give an error of:
May 29 16:51:11 ip-10-0-0-148 systemd[1]:
ceph-a3ed1cb2-a1cb-11ea-8daf-a729fb450032@osd.0.service: Main process exited,
code=exited, status=1/FAILURE
May 29 16:51:12 ip-10-0-0-148 systemd[1]:
ceph-a3ed1cb2-a1cb-11ea-8daf-a729fb450032@osd.0.service: Failed with result
'exit-code'.
May 29 16:51:22 ip-10-0-0-148 systemd[1]:
ceph-a3ed1cb2-a1cb-11ea-8daf-a729fb450032@osd.0.service: Scheduled restart job,
restart counter is at 4.
May 29 16:51:22 ip-10-0-0-148 systemd[1]: Stopped Ceph osd.0 for
a3ed1cb2-a1cb-11ea-8daf-a729fb450032.
May 29 16:51:22 ip-10-0-0-148 systemd[1]: Starting Ceph osd.0 for
a3ed1cb2-a1cb-11ea-8daf-a729fb450032...
May 29 16:51:22 ip-10-0-0-148 docker[114525]: Error: No such container:
ceph-a3ed1cb2-a1cb-11ea-8daf-a729fb450032-osd.0
May 29 16:51:22 ip-10-0-0-148 systemd[1]: Started Ceph osd.0 for
a3ed1cb2-a1cb-11ea-8daf-a729fb450032.
May 29 16:51:23 ip-10-0-0-148 bash[114543]: Running command: /usr/bin/mount
-t tmpfs tmpfs /var/lib/ceph/osd/ceph-0
May 29 16:51:23 ip-10-0-0-148 bash[114543]: Running command: /usr/bin/chown
-R ceph:ceph /var/lib/ceph/osd/ceph-0
May 29 16:51:23 ip-10-0-0-148 bash[114543]: Running command:
/usr/bin/ceph-bluestore-tool --cluster=ceph prime-osd-dir --dev
/dev/ceph-b3cf0dc5-a5fb-45c5-af3c-b85ef0b115ee/osd-block-3bfa4417-18e5-49f9->
May 29 16:51:23 ip-10-0-0-148 bash[114543]: Running command: /usr/bin/ln -snf
/dev/ceph-b3cf0dc5-a5fb-45c5-af3c-b85ef0b115ee/osd-block-3bfa4417-18e5-49f9-95ee-4c5912f0fa22
/var/lib/ceph/osd/ceph-0/block
May 29 16:51:23 ip-10-0-0-148 bash[114543]: Running command: /usr/bin/chown
-h ceph:ceph /var/lib/ceph/osd/ceph-0/block
May 29 16:51:23 ip-10-0-0-148 bash[114543]: Running command: /usr/bin/chown
-R ceph:ceph
/dev/mapper/ceph--b3cf0dc5--a5fb--45c5--af3c--b85ef0b115ee-osd--block--3bfa4417--18e5--49f9--95ee--4c5912f0fa22
May 29 16:51:23 ip-10-0-0-148 bash[114543]: Running command: /usr/bin/chown
-R ceph:ceph /var/lib/ceph/osd/ceph-0
May 29 16:51:23 ip-10-0-0-148 bash[114543]: --> ceph-volume lvm activate
successful for osd ID: 0
May 29 16:51:24 ip-10-0-0-148 bash[115166]: debug
2020-05-29T16:51:24.602+0000 7f05cfb9cec0 0 set uid:gid to 167:167 (ceph:ceph)
May 29 16:51:24 ip-10-0-0-148 bash[115166]: debug
2020-05-29T16:51:24.602+0000 7f05cfb9cec0 0 ceph version 15.2.2
(0c857e985a29d90501a285f242ea9c008df49eb8) octopus (stable), process ceph-osd,
pid 1
May 29 16:51:24 ip-10-0-0-148 bash[115166]: debug
2020-05-29T16:51:24.602+0000 7f05cfb9cec0 0 pidfile_write: ignore empty
--pid-file
May 29 16:51:24 ip-10-0-0-148 bash[115166]: debug
2020-05-29T16:51:24.602+0000 7f05cfb9cec0 -1 missing 'type' file and unable to
infer osd type
Using ubuntu 20.04 without root zfs works fine.
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