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  1. RHEL
  2. RHEL-33566

[RHEL EPIC] Persist runtime resource changes in Podman - RHEL 10.0 Beta

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    • [RHEL EPIC] Persist runtime resource changes in Podman - RHEL 10.0 Beta
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      The following needs to be verified in order for this epic to be considered complete:

      • See test suggestions in description.
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      The following needs to be verified in order for this epic to be considered complete: See test suggestions in description.
    • Red Hat Enterprise Linux
    • rhel-sst-container-tools
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    • QE ack, Dev ack, Docs ack, PXE ack
    • Enhancement
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      .Runtime resource changes in Podman are persistent

      The updates of container configuration by using the `podman update` command are persistent. Note that this enhancement is for both SQLite and BoltDB database backends.
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      .Runtime resource changes in Podman are persistent The updates of container configuration by using the `podman update` command are persistent. Note that this enhancement is for both SQLite and BoltDB database backends.
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      Description

      SME: Matt Heon

      Changes made via `podman update` (for example, to change resource quotas) are not currently persistent. This was a design choice in keeping with typical immutable-style deployments. It was later reinforced by database decisions. With the change to SQLite, there was an opportunity to revisit design.

      Possible QE Test:

      podman run dt  -name tester alpine

      podman exec tester cat /sys/fs/cgroup/pids.max   # note number s/b 2048

      podman update --pids-limit=1024 tester

      podman exec tester cat /sys/fs/cgroup/pids.max   # validate 1024

      podman stop tester

      podman start tester

      podman exec tester cat /sys/fs/cgroup/pids.max   # validate 1024

      1. Prior versions of Podman would have the original pids.max value after the stop/start, and NOT 1024

      Goal

      Persist resource modifications made with `podman update` when using SQLite database.

      Non-Goal

      Changing existing BoltDB based deployments.

       

       

              tsweeney@redhat.com Tom Sweeney
              tsweeney@redhat.com Tom Sweeney
              Container Runtime Eng Bot Container Runtime Eng Bot
              Container Runtime Bugs Bot Container Runtime Bugs Bot
              Gabriela Necasova Gabriela Necasova
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