opensource/podman
1
0
Fork 0
mirror of https://github.com/containers/podman.git synced 2025-08-06 03:19:52 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add RequiresMountsFor= to systemd generate

Browse Source 
It is rare but possible that storage locations for the graphroot and the
runroot are not mounted at boot time, and therefore might race when
doing container operations.  An example we've seen in the wild is that a
slow tmpfs mount for the runroot would suddenly mount over /run, causing
the container to lose all currently-running data, requiring a system
refresh to get it back.

This patch adds RequiresMountsFor= to the systemd.unit header to ensure
the paths for both the graphroot and runroot are mounted prior to
starting any generated unit files.

Signed-off-by: Robb Manes <rmanes@redhat.com>
This commit is contained in:
Robb Manes
2021-03-16 12:42:02 -04:00
parent 604459b404
commit 748826fc88
6 changed files with 111 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
docs/source/markdown/podman-generate-systemd.1.md
View File

@ -61,7 +61,7 @@ Set the systemd unit name separator between the name/id of a container/pod and t
### Generate and print a systemd unit file for a container
Generate a systemd unit file for a container running nginx with an *always* restart policy and 1-second timeout to stdout.
Generate a systemd unit file for a container running nginx with an *always* restart policy and 1-second timeout to stdout. Note that the **RequiresMountsFor** option in the **Unit** section ensures that the container storage for both the GraphRoot and the RunRoot are mounted prior to starting the service. For systems with container storage on disks like iSCSI or other remote block protocols, this ensures that Podman is not executed prior to any necessary storage operations coming online.
```
$ podman create --name nginx nginx:latest
@ -73,6 +73,9 @@ $ podman generate systemd --restart-policy=always -t 1 nginx
[Unit]
Description=Podman container-de1e3223b1b888bc02d0962dd6cb5855eb00734061013ffdd3479d225abacdc6.service
Documentation=man:podman-generate-systemd(1)
Wants=network.target
After=network-online.target
RequiresMountsFor=/var/lib/containers/storage /var/run/container/storage
[Service]
Restart=always
@ -101,6 +104,7 @@ Description=Podman container-busy_moser.service
Documentation=man:podman-generate-systemd(1)
Wants=network.target
After=network-online.target
RequiresMountsFor=/var/lib/containers/storage /var/run/container/storage
[Service]
Environment=PODMAN_SYSTEMD_UNIT=%n
@ -140,6 +144,9 @@ Description=Podman pod-systemd-pod.service
Documentation=man:podman-generate-systemd(1)
Requires=container-amazing_chandrasekhar.service container-jolly_shtern.service
Before=container-amazing_chandrasekhar.service container-jolly_shtern.service
Wants=network.target
After=network-online.target
RequiresMountsFor=/var/lib/containers/storage /var/run/container/storage
[Service]
Restart=on-failure