Fix #47528
systemd: Support Graceful Reboot for AIO Node
0%
Description
Ceph AIO installation with single/multiple node is not friendly for loopback mount, especially always get deadlock issue during graceful system reboot.
We already have `rbdmap.service` with graceful system reboot friendly as below:
[Unit]
After=network-online.target
Before=remote-fs-pre.target
Wants=network-online.target remote-fs-pre.target
[Service]
ExecStart=/usr/bin/rbdmap map
ExecReload=/usr/bin/rbdmap map
ExecStop=/usr/bin/rbdmap unmap-all
This PR introduce:
- `ceph-mon.target`: Ensure startup after `network-online.target` and before `remote-fs-pre.target`
- `ceph-*.target`: Ensure startup after `ceph-mon.target` and before `remote-fs-pre.target`
- `rbdmap.service`: Once all `_netdev` get unmount by `remote-fs.target`, ensure unmap all RBD BEFORE any Ceph components under `ceph.target` get stopped during shutdown
The logic is concept proof by https://github.com/alvistack/ansible-role-ceph_common/tree/develop; also works as expected with Ceph + Kubernetes deployment by https://github.com/alvistack/ansible-collection-kubernetes/tree/develop. No more deadlock happened during graceful system reboot, both AIO single/multiple no de with loopback mount.
Also see:
- https://github.com/ceph/ceph/pull/36776
- https://github.com/etcd-io/etcd/pull/12259
- https://github.com/cri-o/cri-o/pull/4128
- https://github.com/kubernetes/release/pull/1504
Signed-off-by: Wong Hoi Sing Edison hswong3i@gmail.com
Related issues
History
#1 Updated by Kefu Chai over 3 years ago
- Status changed from New to Fix Under Review
- Assignee set to Wong Hoi Sing Edison
- Pull request ID set to 36776
#2 Updated by Patrick Donnelly over 3 years ago
- Target version set to v16.0.0
- Source set to Community (dev)
- Backport set to octopus,nautilus
#3 Updated by Patrick Donnelly over 3 years ago
- Status changed from Fix Under Review to Pending Backport
#4 Updated by Nathan Cutler over 3 years ago
- Copied to Backport #47576: octopus: systemd: Support Graceful Reboot for AIO Node added
#5 Updated by Nathan Cutler over 3 years ago
- Copied to Backport #47577: nautilus: systemd: Support Graceful Reboot for AIO Node added
#6 Updated by Nathan Cutler over 3 years ago
- Status changed from Pending Backport to Resolved
While running with --resolve-parent, the script "backport-create-issue" noticed that all backports of this issue are in status "Resolved" or "Rejected".