View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0007757 | Rocky-Linux-9 | systemd | public | 2024-08-29 14:05 | 2024-08-29 14:05 |
| Reporter | Andrew K | Assigned To | |||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | new | Resolution | open | ||
| Platform | x64 | OS | Rocky Linux | OS Version | 9.4 |
| Summary | 0007757: NFS reexport causes systemd ordering cycle | ||||
| Description | Adding an NFS mount to /etc/fstab and then re-exporting it via /etc/exports causes an ordering cycle in systemd where both the mount and nfs-server think they depend on each other. Instead, nfs-server should depend on the mount, and not the other way around. | ||||
| Steps To Reproduce | Add to /etc/fstab: server:/export /reexport nfs ro,vers=3,proto=tcp 0 0 Add to /etc/exports: /reexport 127.0.0.1/32(ro,no_root_squash,insecure,fsid=5f6e56bd-ac3d-4031-b516-e2a658f3fc98) Reload systemd: systemd daemon-reload View the circular dependency: systemd-analyze dot reexport.mount digraph systemd { "reexport.mount"->"nfs-server.service" [color="green"]; ########## The mount is depending on nfs-server, which it shouldn't "reexport.mount"->"systemd-journald.socket" [color="green"]; "reexport.mount"->"-.mount" [color="green"]; "reexport.mount"->"network-online.target" [color="green"]; "reexport.mount"->"remote-fs-pre.target" [color="green"]; "reexport.mount"->"network.target" [color="green"]; "reexport.mount"->"system.slice" [color="green"]; "reexport.mount"->"system.slice" [color="black"]; "reexport.mount"->"-.mount" [color="black"]; "reexport.mount"->"network-online.target" [color="grey66"]; "reexport.mount"->"umount.target" [color="red"]; "nfs-server.service"->"reexport.mount" [color="green"]; ####### nfs-server is depending on the mount, which is correct "nfs-server.service"->"reexport.mount" [color="black"]; "umount.target"->"reexport.mount" [color="green"]; "remote-fs.target"->"reexport.mount" [color="green"]; "remote-fs.target"->"reexport.mount" [color="black"]; } Reboot, and see that nfs-server has failed with: reexport.mount: Found ordering cycle on nfs-server.service/start reexport.mount: Found dependency on mnt-software_reexport.mount/start reexport.mount: Job nfs-server.service/start deleted to break ordering cycle starting with reexport.mount/start | ||||
| Tags | nfs, systemd | ||||
