To add, on this, the issue seemed related to a process (ceph-volume) which was doing check operations on all devices. The systemctl osd service was timing out because of that and the osd daemon was going into error state. We noticed that version 17.2.5 had a change related to ceph-volume, in particular https://tracker.ceph.com/issues/57627. We decided to skip 16.2.11 and jump to 17.2.5. This second attempt went well, so the issue is now solved. Note: the upgrade 16.2.7 -> 16.2.11 went smoothly in a TDS cluster with identical OS/software, but much smaller, 3 nodes with a couple of disk each, so the issue seems really to be about the number of devices and nodes. Regards, Giuseppe On 30.03.23, 16:56, "Lo Re Giuseppe" &lt;giuseppe.lore(a)cscs.ch <mailto:giuseppe.lore@cscs.ch>> wrote: Dear all, On one of our clusters I started the upgrade process from 16.2.7 to 16.2.11. Mon and mgr and crash processes were done easily/quickly, then at the first attempt of upgrading a OSD container the upgrade process stopped because of the OSD process is not able to start after the upgrade. Does anyone have any hint on how to unblock the upgrade? Some details below: Regards, Giuseppe I started the upgrade process with the cephadm command: “”” [root@naret-monitor01 ~]# ceph orch upgrade start --ceph-version 16.2.11 Initiating upgrade to quay.io/ceph/ceph:v16.2.11 “”” After a short time: “”” [root@naret-monitor01 ~]# ceph orch upgrade status { "target_image": quay.io/ceph/ceph@sha256:1b9803c8984bef8b82f05e233e8fe8ed8f0bba8e5cc2c57f6efaccbeea682add<mailto:quay.io/ceph/ceph@sha256:1b9803c8984bef8b82f05e233e8fe8ed8f0bba8e5cc2c57f6efaccbeea682add>, "in_progress": true, "which": "Upgrading all daemon types on all hosts", "services_complete": [ "crash", "mon", "mgr" ], "progress": "64/2039 daemons upgraded", "message": "Error: UPGRADE_REDEPLOY_DAEMON: Upgrading daemon osd.4 on host naret-osd01 failed.", "is_paused": true } “”” The ceph health command reports: “”” [root@naret-monitor01 ~]# ceph health detail HEALTH_WARN 1 failed cephadm daemon(s); 1 osds down; Degraded data redundancy: 2654362/6721382840 objects degraded (0.039%), 14 pgs degraded, 14 pgs undersized; Upgrading daemon osd.4 on host naret-osd01 failed. [WRN] CEPHADM_FAILED_DAEMON: 1 failed cephadm daemon(s) daemon osd.22 on naret-osd01 is in error state [WRN] OSD_DOWN: 1 osds down osd.4 (root=default,host=naret-osd01) is down [WRN] PG_DEGRADED: Degraded data redundancy: 2654362/6721382840 objects degraded (0.039%), 14 pgs degraded, 14 pgs undersized pg 28.88 is stuck undersized for 6m, current state active+undersized+degraded, last acting [1373,1337,1508,852,2147483647,483] pg 28.528 is stuck undersized for 6m, current state active+undersized+degraded, last acting [1063,793,2147483647,931,338,1777] pg 28.594 is stuck undersized for 6m, current state active+undersized+degraded, last acting [1208,891,1651,364,2147483647,53] pg 28.8b4 is stuck undersized for 6m, current state active+undersized+degraded, last acting [521,1273,1238,138,1539,2147483647] pg 28.a90 is stuck undersized for 6m, current state active+undersized+degraded, last acting [237,1665,1836,2147483647,192,1410] pg 28.ad6 is stuck undersized for 6m, current state active+undersized+degraded, last acting [870,466,350,885,1601,2147483647] pg 28.b34 is stuck undersized for 6m, current state active+undersized+degraded, last acting [920,1596,2147483647,115,201,941] pg 28.c14 is stuck undersized for 6m, current state active+undersized+degraded, last acting [1389,424,2147483647,268,1646,632] pg 28.dba is stuck undersized for 6m, current state active+undersized+degraded, last acting [1099,561,2147483647,1806,1874,1145] pg 28.ee2 is stuck undersized for 6m, current state active+undersized+degraded, last acting [1621,1904,1044,2147483647,1545,722] pg 29.163 is stuck undersized for 6m, current state active+undersized+degraded, last acting [1883,2147483647,1509,1697,1187,235] pg 29.1c1 is stuck undersized for 6m, current state active+undersized+degraded, last acting [122,1226,962,1254,1215,2147483647] pg 29.254 is stuck undersized for 6m, current state active+undersized+degraded, last acting [1782,1839,1545,412,196,2147483647] pg 29.2a1 is stuck undersized for 6m, current state active+undersized+degraded, last acting [370,2147483647,575,1423,1755,446] [WRN] UPGRADE_REDEPLOY_DAEMON: Upgrading daemon osd.4 on host naret-osd01 failed. Upgrade daemon: osd.4: cephadm exited with an error code: 1, stderr:Redeploy daemon osd.4 ... Non-zero exit code 1 from systemctl start ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4<mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4> systemctl: stderr Job for ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice<mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice> failed because a timeout was exceeded. systemctl: stderr See "systemctl status ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice<mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice>" and "journalctl -xe" for details. Traceback (most recent call last): File "/var/lib/ceph/63334166-d991-11eb-99de-40a6b72108d0/cephadm.8d0364fef6c92fc3580b0d022e32241348e6f11a7694d2b957cdafcb9d059ff2", line 9248, in <module> main() File "/var/lib/ceph/63334166-d991-11eb-99de-40a6b72108d0/cephadm.8d0364fef6c92fc3580b0d022e32241348e6f11a7694d2b957cdafcb9d059ff2", line 9236, in main r = ctx.func(ctx) File "/var/lib/ceph/63334166-d991-11eb-99de-40a6b72108d0/cephadm.8d0364fef6c92fc3580b0d022e32241348e6f11a7694d2b957cdafcb9d059ff2", line 1990, in _default_image return func(ctx) File "/var/lib/ceph/63334166-d991-11eb-99de-40a6b72108d0/cephadm.8d0364fef6c92fc3580b0d022e32241348e6f11a7694d2b957cdafcb9d059ff2", line 5041, in command_deploy ports=daemon_ports) File "/var/lib/ceph/63334166-d991-11eb-99de-40a6b72108d0/cephadm.8d0364fef6c92fc3580b0d022e32241348e6f11a7694d2b957cdafcb9d059ff2", line 2952, in deploy_daemon c, osd_fsid=osd_fsid, ports=ports) File "/var/lib/ceph/63334166-d991-11eb-99de-40a6b72108d0/cephadm.8d0364fef6c92fc3580b0d022e32241348e6f11a7694d2b957cdafcb9d059ff2", line 3197, in deploy_daemon_units call_throws(ctx, ['systemctl', 'start', unit_name]) File "/var/lib/ceph/63334166-d991-11eb-99de-40a6b72108d0/cephadm.8d0364fef6c92fc3580b0d022e32241348e6f11a7694d2b957cdafcb9d059ff2", line 1657, in call_throws raise RuntimeError(f'Failed command: {" ".join(command)}: {s}') RuntimeError: Failed command: systemctl start ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4<mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4>: Job for ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice<mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice> failed because a timeout was exceeded. See "systemctl status ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice<mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice>" and "journalctl -xe" for details. “”” On the OSD server we have: “”” [root@naret-osd01 ~]# uname -a Linux naret-osd01 4.18.0-425.10.1.el8_7.x86_64 #1 SMP Wed Dec 14 16:00:01 EST 2022 x86_64 x86_64 x86_64 GNU/Linux [root@naret-osd01 ~]# podman -v podman version 4.2.0 [root@naret-osd01 ~]# ceph -v ceph version 15.2.17 (8a82819d84cf884bd39c17e3236e0632ac146dc4) octopus (stable) [root@naret-osd01 ~]# cat /etc/os-release NAME="Red Hat Enterprise Linux" VERSION="8.7 (Ootpa)" ID="rhel" ID_LIKE="fedora" VERSION_ID="8.7" PLATFORM_ID="platform:el8" PRETTY_NAME="Red Hat Enterprise Linux 8.7 (Ootpa)" ANSI_COLOR="0;31" CPE_NAME="cpe:/o:redhat:enterprise_linux:8::baseos" HOME_URL=https://www.redhat.com/ <https://www.redhat.com/> DOCUMENTATION_URL=https://access.redhat.com/documentation/red_hat_enterpris… <https://access.redhat.com/documentation/red_hat_enterprise_linux/8/> BUG_REPORT_URL=https://bugzilla.redhat.com/ <https://bugzilla.redhat.com/> REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 8" REDHAT_BUGZILLA_PRODUCT_VERSION=8.7 REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux" REDHAT_SUPPORT_PRODUCT_VERSION="8.7" “”” Systemctl says: “”” systemctl status ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice<mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice> … ● ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice<mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice> - Ceph osd.4 for 63334166-d991-11eb-99de-40a6b72108d0 Loaded: loaded (/etc/systemd/system/ceph-63334166-d991-11eb-99de-40a6b72108d0@.service<mailto:/etc/systemd/system/ceph-63334166-d991-11eb-99de-40a6b72108d0@.service>; enabled; vendor preset: disabled) Active: failed (Result: timeout) since Mon 2023-03-27 15:34:29 CEST; 6min ago Process: 730621 ExecStopPost=/bin/rm -f /run/ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice-pid<mailto:/run/ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice-pid> /run/ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice-cid<mailto:/run/ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice-cid> (code=exited, status=0/SUCCESS) Process: 730209 ExecStopPost=/bin/bash /var/lib/ceph/63334166-d991-11eb-99de-40a6b72108d0/osd.4/unit.poststop (code=exited, status=0/SUCCESS) Process: 710355 ExecStartPre=/bin/rm -f /run/ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice-pid<mailto:/run/ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice-pid> /run/ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice-cid<mailto:/run/ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice-cid> (code=exited, status=0/SUCCESS) Main PID: 23025 (code=exited, status=0/SUCCESS) Tasks: 62 (limit: 1647878) Memory: 961.8M CGroup: /system.slice/system-ceph\x2d63334166\x2dd991\x2d11eb\x2d99de\x2d40a6b72108d0.slice/ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice ├─libpod-payload-b4f0ebebdfec38942b614756b6329b04d2939db29a0a9823e314b848680bc58e │ └─754976 /usr/bin/ceph-osd -n osd.4 -f --setuser ceph --setgroup ceph --default-log-to-file=false --default-log-to-stderr=true --default-log-stderr-prefix=debug └─runtime └─754965 /usr/bin/conmon --api-version 1 -c b4f0ebebdfec38942b614756b6329b04d2939db29a0a9823e314b848680bc58e -u b4f0ebebdfec38942b614756b6329b04d2939db29a0a9823e314b848680bc58e -r /usr/bin/runc -b /var/lib/containers/storage/overlay-containers/b4f0ebebdfec38942b614756b6329b04d2939db29a0a9823e314b848680bc58e/userdata -p /run/containers/storage/overlay-containers/b4f0ebebdfec38942b614756b6329b04d2939db29a0a9823e314b848680bc58e/userdata/pidfile -n ceph-63334166-d991-11eb-99de-40a6b72108d0-osd-4 --exit-dir /run/libpod/exits --full-attach -l journald --log-level warning --runtime-arg --log-format=json --runtime-arg --log --runtime-arg=/run/containers/storage/overlay-containers/b4f0ebebdfec38942b614756b6329b04d2939db29a0a9823e314b848680bc58e/userdata/oci-log --conmon-pidfile /run/ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice-pid<mailto:/run/ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice-pid> --exit-command /usr/bin/podman --exit-command-arg --root --exit-command-arg /var/lib/containers/storage --exit-command-arg --runroot --exit-command-arg /run/containers/storage --exit-command-arg --log-level --exit-command-arg warning --exit-command-arg --cgroup-manager --exit-command-arg systemd --exit-command-arg --tmpdir --exit-command-arg /run/libpod --exit-command-arg --network-config-dir --exit-command-arg --exit-command-arg --network-backend --exit-command-arg cni --exit-command-arg --volumepath --exit-command-arg /var/lib/containers/storage/volumes --exit-command-arg --runtime --exit-command-arg runc --exit-command-arg --storage-driver --exit-command-arg overlay --exit-command-arg --storage-opt --exit-command-arg overlay.mountopt=nodev,metacopy=on --exit-command-arg --events-backend --exit-command-arg file --exit-command-arg container --exit-command-arg cleanup --exit-command-arg --rm --exit-command-arg b4f0ebebdfec38942b614756b6329b04d2939db29a0a9823e314b848680bc58e Mar 27 15:36:56 naret-osd01 ceph-63334166-d991-11eb-99de-40a6b72108d0-osd-4[754965]: debug 2023-03-27T13:36:56.886+0000 7f52e6ae1700 1 osd.4 pg_epoch: 821628 pg[28.dbas2( v 821618'4657799 (819107'4647770,821618'4657799] local-lis/les=749842/749843 n=239290 ec=130297/130290 lis/c=821623/749842 les/c/f=821624/749843/0 sis=821628 pruub=7.751406670s) [1099,561,4,1806,1874,1145]p1099(0) r=2 lpr=821628 pi=[749842,821628)/1 crt=821618'4657799 lcod 0'0 mlcod 0'0 unknown NOTIFY pruub 12.039081573s@ mbc={} ps=[4~6]] state<Start>: transitioning to Stray Mar 27 15:36:56 naret-osd01 ceph-63334166-d991-11eb-99de-40a6b72108d0-osd-4[754965]: debug 2023-03-27T13:36:56.886+0000 7f52e8ae5700 1 osd.4 pg_epoch: 821628 pg[29.163s1( v 821572'139334 (776804'129273,821572'139334] local-lis/les=749851/749852 n=65683 ec=130801/130801 lis/c=821623/749851 les/c/f=821624/749852/0 sis=821628 pruub=8.023463249s) [1883,4,1509,1697,1187,235]p1883(0) r=1 lpr=821628 pi=[749851,821628)/1 crt=821572'139334 lcod 0'0 mlcod 0'0 unknown NOTIFY pruub 12.311203003s@ mbc={}] start_peering_interval up [1883,4,1509,1697,1187,235] -> [1883,4,1509,1697,1187,235], acting [1883,2147483647,1509,1697,1187,235] -> [1883,4,1509,1697,1187,235], acting_primary 1883(0) -> 1883, up_primary 1883(0) -> 1883, role -1 -> 1, features acting 4540138297136906239 upacting 4540138297136906239 Mar 27 15:36:56 naret-osd01 ceph-63334166-d991-11eb-99de-40a6b72108d0-osd-4[754965]: debug 2023-03-27T13:36:56.886+0000 7f52e72e2700 1 osd.4 pg_epoch: 821628 pg[29.2a1s1( v 821500'140649 (776804'130601,821500'140649] local-lis/les=749849/749850 n=65848 ec=130801/130801 lis/c=821623/749849 les/c/f=821624/749850/0 sis=821628 pruub=7.845988274s) [370,4,575,1423,1755,446]p370(0) r=1 lpr=821628 pi=[749849,821628)/1 crt=821500'140649 lcod 0'0 mlcod 0'0 unknown NOTIFY pruub 12.133728981s@ mbc={}] start_peering_interval up [370,4,575,1423,1755,446] -> [370,4,575,1423,1755,446], acting [370,2147483647,575,1423,1755,446] -> [370,4,575,1423,1755,446], acting_primary 370(0) -> 370, up_primary 370(0) -> 370, role -1 -> 1, features acting 4540138297136906239 upacting 4540138297136906239 Mar 27 15:36:56 naret-osd01 ceph-63334166-d991-11eb-99de-40a6b72108d0-osd-4[754965]: debug 2023-03-27T13:36:56.887+0000 7f52e8ae5700 1 osd.4 pg_epoch: 821628 pg[29.163s1( v 821572'139334 (776804'129273,821572'139334] local-lis/les=749851/749852 n=65683 ec=130801/130801 lis/c=821623/749851 les/c/f=821624/749852/0 sis=821628 pruub=8.023443222s) [1883,4,1509,1697,1187,235]p1883(0) r=1 lpr=821628 pi=[749851,821628)/1 crt=821572'139334 lcod 0'0 mlcod 0'0 unknown NOTIFY pruub 12.311203003s@ mbc={}] state<Start>: transitioning to Stray Mar 27 15:36:56 naret-osd01 ceph-63334166-d991-11eb-99de-40a6b72108d0-osd-4[754965]: debug 2023-03-27T13:36:56.887+0000 7f52e72e2700 1 osd.4 pg_epoch: 821628 pg[29.2a1s1( v 821500'140649 (776804'130601,821500'140649] local-lis/les=749849/749850 n=65848 ec=130801/130801 lis/c=821623/749849 les/c/f=821624/749850/0 sis=821628 pruub=7.845966339s) [370,4,575,1423,1755,446]p370(0) r=1 lpr=821628 pi=[749849,821628)/1 crt=821500'140649 lcod 0'0 mlcod 0'0 unknown NOTIFY pruub 12.133728981s@ mbc={}] state<Start>: transitioning to Stray Mar 27 15:36:56 naret-osd01 ceph-63334166-d991-11eb-99de-40a6b72108d0-osd-4[754965]: debug 2023-03-27T13:36:56.887+0000 7f52e72e2700 1 osd.4 pg_epoch: 821628 pg[28.8b4s5( v 821618'2906095 (817032'2896088,821618'2906095] local-lis/les=749842/749843 n=239377 ec=130295/130290 lis/c=821623/749842 les/c/f=821624/749843/0 sis=821628 pruub=8.158309937s) [521,1273,1238,138,1539,4]p521(0) r=5 lpr=821628 pi=[749842,821628)/1 crt=821618'2906095 lcod 0'0 mlcod 0'0 unknown NOTIFY pruub 12.446221352s@ mbc={} ps=[4~6]] start_peering_interval up [521,1273,1238,138,1539,4] -> [521,1273,1238,138,1539,4], acting [521,1273,1238,138,1539,2147483647] -> [521,1273,1238,138,1539,4], acting_primary 521(0) -> 521, up_primary 521(0) -> 521, role -1 -> 5, features acting 4540138297136906239 upacting 4540138297136906239 Mar 27 15:36:56 naret-osd01 ceph-63334166-d991-11eb-99de-40a6b72108d0-osd-4[754965]: debug 2023-03-27T13:36:56.887+0000 7f52e72e2700 1 osd.4 pg_epoch: 821628 pg[28.8b4s5( v 821618'2906095 (817032'2896088,821618'2906095] local-lis/les=749842/749843 n=239377 ec=130295/130290 lis/c=821623/749842 les/c/f=821624/749843/0 sis=821628 pruub=8.158291817s) [521,1273,1238,138,1539,4]p521(0) r=5 lpr=821628 pi=[749842,821628)/1 crt=821618'2906095 lcod 0'0 mlcod 0'0 unknown NOTIFY pruub 12.446221352s@ mbc={} ps=[4~6]] state<Start>: transitioning to Stray Mar 27 15:39:36 naret-osd01 systemd[1]: ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice<mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice>: Start request repeated too quickly. Mar 27 15:39:36 naret-osd01 systemd[1]: ceph-63334166-d991-11eb-99de-40a6b72108d0(a)osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice<mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv <mailto:ceph-63334166-d991-11eb-99de-40a6b72108d0@osd.4.serv>ice>: Failed with result 'timeout'. Mar 27 15:39:36 naret-osd01 systemd[1]: Failed to start Ceph osd.4 for 63334166-d991-11eb-99de-40a6b72108d0. “”” _______________________________________________ ceph-users mailing list -- ceph-users(a)ceph.io <mailto:ceph-users@ceph.io> To unsubscribe send an email to ceph-users-leave(a)ceph.io <mailto:ceph-users-leave@ceph.io>