Hi,
I would expect that you have a similar config-key entry:
ceph config-key ls |grep "peer/cephfs"
"cephfs/mirror/peer/cephfs/18c02021-8902-4e3f-bc17-eaf48331cc56",
Maybe removing that peer would already suffice?
Zitat von Jan Zeinstra <j...@delectat.nl>:
Hi,
This is my first post to the forum and I don't know if it's appropriate,
but I'd like to express my gratitude to all people working hard on ceph
because I think it's a fantastic piece of software.
The problem I'm having is caused by me; we had a well working ceph fs
mirror solution; let's call it source cluster A, and target cluster B.
Source cluster A is a modest cluster consisting of 6 instances, 3 OSD
instances, and 3 mon instances. The OSD instances all have 3 disks (HDD's)
and 3 OSD demons, totalling 9 OSD daemons and 9 HDD's. Target cluster B is
a single node system having 3 OSD daemons and 3 HDD's. Both clusters run
ceph 18.2.4 reef. Both clusters use Ubuntu 22.04 as OS throughout. Both
systems are installed using cephadm.
I have destroyed cluster B, and have built it from the ground up (I made a
mistake in PG sizing in the original cluster)
Now i find i cannot create/ reinstate the mirroring between 2 ceph fs
filesystems, and i suspect there is a peer left behind in the filesystem of
the source, pointing to the now non-existent target cluster.
When i do 'ceph fs snapshot mirror peer_list prodfs', i get:
'{"f3ea4e15-6d77-4f28-aacb-9afbfe8cc1c5": {"client_name":
"client.mirror_remote", "site_name": "bk-site", "fs_name": "prodfs"}}'
When i try to delete it: 'ceph fs snapshot mirror peer_remove prodfs
f3ea4e15-6d77-4f28-aacb-9afbfe8cc1c5', i get: 'Error EACCES: failed to
remove peeraccess denied: does your client key have mgr caps? See
http://docs.ceph.com/en/latest/mgr/administrator/#client-authentication',
but the logging of the daemon points to the more likely reason of failure:
----
Apr 08 12:54:26 s1mon systemd[1]: Started Ceph cephfs-mirror.s1mon.lvlkwp
for d0ea284a-8a16-11ee-9232-5934f0f00ec2.
Apr 08 12:54:26 s1mon cephfs-mirror[310088]: set uid:gid to 167:167
(ceph:ceph)
Apr 08 12:54:26 s1mon cephfs-mirror[310088]: ceph version 18.2.4
(e7ad5345525c7aa95470c26863873b581076945d) reef (stable), process
cephfs-mirror, pid 2
Apr 08 12:54:26 s1mon cephfs-mirror[310088]: pidfile_write: ignore empty
--pid-file
Apr 08 12:54:26 s1mon cephfs-mirror[310088]: mgrc service_daemon_register
cephfs-mirror.22849497 metadata
{arch=x86_64,ceph_release=reef,ceph_version=ceph version 18.2.4
(e7ad5345525c7a>
Apr 08 12:54:30 s1mon cephfs-mirror[310088]:
cephfs::mirror::PeerReplayer(f3ea4e15-6d77-4f28-aacb-9afbfe8cc1c5) init:
remote monitor host=[v2:172.17.16.12:3300/0,v1:172.17.16.12:6789/0]
Apr 08 12:54:30 s1mon conmon[310082]: 2025-04-08T10:54:30.365+0000
7f57c51ba640 -1 monclient(hunting): handle_auth_bad_method server
allowed_methods [2] but i only support [2,1]
Apr 08 12:54:30 s1mon conmon[310082]: 2025-04-08T10:54:30.365+0000
7f57d81e0640 -1 cephfs::mirror::Utils connect: error connecting to bk-site:
(13) Permission denied
Apr 08 12:54:30 s1mon cephfs-mirror[310088]: cephfs::mirror::Utils connect:
error connecting to bk-site: (13) Permission denied
Apr 08 12:54:30 s1mon conmon[310082]: 2025-04-08T10:54:30.365+0000
7f57d81e0640 -1
cephfs::mirror::PeerReplayer(f3ea4e15-6d77-4f28-aacb-9afbfe8cc1c5) init:
error connecting to remote cl>
Apr 08 12:54:30 s1mon cephfs-mirror[310088]:
cephfs::mirror::PeerReplayer(f3ea4e15-6d77-4f28-aacb-9afbfe8cc1c5) init:
error connecting to remote cluster: (13) Permission denied
Apr 09 00:00:16 s1mon cephfs-mirror[310088]: received signal: Hangup from
Kernel ( Could be generated by pthread_kill(), raise(), abort(), alarm() )
UID: 0
Apr 09 00:00:16 s1mon conmon[310082]: 2025-04-08T22:00:16.362+0000
7f57d99e3640 -1 received signal: Hangup from Kernel ( Could be generated
by pthread_kill(), raise(), abort(), alarm()>
Apr 09 00:00:16 s1mon conmon[310082]: 2025-04-08T22:00:16.386+0000
7f57d99e3640 -1 received signal: Hangup from Kernel ( Could be generated
by pthread_kill(), raise(), abort(), alarm()>
Apr 09 00:00:16 s1mon cephfs-mirror[310088]: received signal: Hangup from
Kernel ( Could be generated by pthread_kill(), raise(), abort(), alarm() )
UID: 0
Apr 09 00:00:16 s1mon conmon[310082]: 2025-04-08T22:00:16.430+0000
7f57d99e3640 -1 received signal: Hangup from Kernel ( Could be generated
by pthread_kill(), raise(), abort(), alarm()>
Apr 09 00:00:16 s1mon cephfs-mirror[310088]: received signal: Hangup from
Kernel ( Could be generated by pthread_kill(), raise(), abort(), alarm() )
UID: 0
Apr 09 00:00:16 s1mon conmon[310082]: 2025-04-08T22:00:16.466+0000
7f57d99e3640 -1 received signal: Hangup from Kernel ( Could be generated
by pthread_kill(), raise(), abort(), alarm()>
Apr 09 00:00:16 s1mon cephfs-mirror[310088]: received signal: Hangup from
Kernel ( Could be generated by pthread_kill(), raise(), abort(), alarm() )
UID: 0
Apr 10 00:00:01 s1mon cephfs-mirror[310088]: received signal: Hangup from
Kernel ( Could be generated by pthread_kill(), raise(), abort(), alarm() )
UID: 0
Apr 10 00:00:01 s1mon conmon[310082]: 2025-04-09T22:00:01.767+0000
7f57d99e3640 -1 received signal: Hangup from Kernel ( Could be generated
by pthread_kill(), raise(), abort(), alarm()>
Apr 10 00:00:01 s1mon cephfs-mirror[310088]: received signal: Hangup from
Kernel ( Could be generated by pthread_kill(), raise(), abort(), alarm() )
UID: 0
Apr 10 00:00:01 s1mon conmon[310082]: 2025-04-09T22:00:01.811+0000
7f57d99e3640 -1 received signal: Hangup from Kernel ( Could be generated
by pthread_kill(), raise(), abort(), alarm()>
Apr 10 00:00:01 s1mon cephfs-mirror[310088]: received signal: Hangup from
Kernel ( Could be generated by pthread_kill(), raise(), abort(), alarm() )
UID: 0
Apr 10 00:00:01 s1mon conmon[310082]: 2025-04-09T22:00:01.851+0000
7f57d99e3640 -1 received signal: Hangup from Kernel ( Could be generated
by pthread_kill(), raise(), abort(), alarm()>
Apr 10 00:00:01 s1mon conmon[310082]: 2025-04-09T22:00:01.891+0000
7f57d99e3640 -1 received signal: Hangup from Kernel ( Could be generated
by pthread_kill(), raise(), abort(), alarm()>
Apr 10 00:00:01 s1mon cephfs-mirror[310088]: received signal: Hangup from
Kernel ( Could be generated by pthread_kill(), raise(), abort(), alarm() )
UID: 0
----
Is there any chance I can get the mirroring daemon to forget about the
cluster I lost ?
Best regards, Jan Zeinstra
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