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InstantON power Z to 24001 staging #7212

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Feb 6, 2024
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InstantON power Z to 24001 staging #7212

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Updates to Document InstantOn is supported on Power and Z (s390x) wi…
dmuelle Jan 23, 2024
5f3908b
Merge pull request #7211 from OpenLiberty/7172-InstanOn-power-Z
ramkumar-k-9286 Feb 6, 2024
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10 changes: 5 additions & 5 deletions modules/ROOT/pages/instanton.adoc
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Expand Up @@ -63,14 +63,14 @@ For more information about limitations with early startup code and possible work
[#prereq]
== Runtime and host build system prerequisites

Starting with Open Liberty version 23.0.0.6, all X86-64/AMD64 UBI xref:container-images.adoc[Open Liberty container images] include the prerequisites for InstantOn to checkpoint and restore Open Liberty application processes. Open Liberty Ubuntu container images are not enabled for InstantOn.
Starting with Open Liberty version 23.0.0.6, all X86-64/AMD64 UBI xref:container-images.adoc[Open Liberty container images] include the prerequisites for InstantOn to checkpoint and restore Open Liberty application processes. In version 24.0.0.1 and later, Power and Z (s390x) processor architectures are also supported when you use IBM Semeru Java version 21.0.1+. Open Liberty Ubuntu container images are not enabled for InstantOn.

Currently, InstantOn is supported with IBM Semeru Java version 11.0.19+ and IBM Semeru Java version 17.0.7+. InstantOn is expected to support new versions of IBM Semeru Java as they are released. Currently, InstantOn is not supported on other Java vendor implementations.
Currently, InstantOn is supported with IBM Semeru Java version 11.0.19+, IBM Semeru Java version 17.0.7+, and IBM Semeru Java version 21.0.1+. InstantOn is expected to support new versions of IBM Semeru Java as they are released. Currently, InstantOn is not supported on other Java vendor implementations.

To use InstantOn during an application container image build, the host machine must satisfy the following prerequisites:

- Uses the Linux Operating System with kernel version 5.9 or greater
- Uses the X86-64/AMD64 processor architecture
- Uses one of the following the processor architectures: X86-64/AMD64, Power (with IBM Semeru Java version 21.0.1+), Z (s390x) (with IBM Semeru Java version 21.0.1+)
- Allows execution of privileged container builds by using Podman or Docker

The use of privileged containers in the application container image build is required only when you build the container image with InstantOn. Running the resulting InstantOn application image does not require the use of privileged containers.
Expand Down Expand Up @@ -235,11 +235,11 @@ Special considerations are required to run an InstantOn application image locall
1. The host that is running the container image must use Linux kernel 5.9 or greater
2. The Linux capabilities CHECKPOINT_RESTORE and SETPCAP must be granted to the running container
3. The necessary system calls must be granted to the running container
4. The host processor must be X86-64/AMD64
4. The host processor must be X86-64/AMD64. If you are running IBM Semeru Java version 21.0.1+, Power and Z (s390x) processor architectures are also supported.

=== Running an InstantOn application image locally

If a host system is running the Linux kernel 5.9 or greater with the X86-64/AMD64 processor, you can run an InstantOn application image by using Podman or Docker locally. The following command runs the `liberty-app-instanton` InstantOn application image with Podman:
If a host system is running the Linux kernel 5.9 or greater with the X86-64/AMD64 processor, you can run an InstantOn application image by using Podman or Docker locally. If you are running IBM Semeru Java version 21.0.1+, Power and Z (s390x) processor architectures are also supported. The following command runs the `liberty-app-instanton` InstantOn application image with Podman:

[source,sh]
----
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