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Error out early if system does not support pre-copy checkpointing #12672

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adrianreber
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CRIU's pre-copy migration support relies on the soft dirty page tracking in the Linux kernel:

https://www.kernel.org/doc/Documentation/vm/soft-dirty.txt

This functionality is not implemented for all architectures and it can also be turned off in the kernel.

CRIU can check if the combination of architecture/kernel/CRIU supports the soft dirty page tracking and exports this feature checking functionality in go-criu.

This commit adds an early check if the user selects pre-copy checkpointing to error out if the system does not support it.

@rhatdan
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rhatdan commented Dec 21, 2021

LGTM

@TomSweeneyRedHat
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Tests aren't happy. Couple doc nits, otherwise LGTM

@adrianreber adrianreber force-pushed the 2021-12-21-check-for-memtrack branch 3 times, most recently from e7c9869 to 9f788fd Compare December 22, 2021 12:36
@mheon
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mheon commented Dec 22, 2021

I think this was Quay hiccuping - restarted

@mheon
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mheon commented Dec 22, 2021

/approve

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openshift-ci bot commented Dec 22, 2021

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: adrianreber, mheon

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@openshift-ci openshift-ci bot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Dec 22, 2021
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mheon commented Dec 22, 2021

One nit otherwise LGTM

@adrianreber adrianreber force-pushed the 2021-12-21-check-for-memtrack branch from 9f788fd to 9a8794d Compare December 23, 2021 09:39
@rhatdan
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rhatdan commented Dec 23, 2021

@adrianreber Needs a rebase.

Signed-off-by: Adrian Reber <[email protected]>
CRIU's pre-copy migration support relies on the soft dirty page tracking
in the Linux kernel:

 https://www.kernel.org/doc/Documentation/vm/soft-dirty.txt

This functionality is not implemented for all architectures and it can
also be turned off in the kernel.

CRIU can check if the combination of architecture/kernel/CRIU supports
the soft dirty page tracking and exports this feature checking
functionality in go-criu.

This commit adds an early check if the user selects pre-copy
checkpointing to error out if the system does not support it.

Signed-off-by: Adrian Reber <[email protected]>
@adrianreber adrianreber force-pushed the 2021-12-21-check-for-memtrack branch from 9a8794d to d669dbf Compare December 23, 2021 09:51
@adrianreber
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Rebased

@rhatdan
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rhatdan commented Dec 23, 2021

/lgtm

@openshift-ci openshift-ci bot added the lgtm Indicates that a PR is ready to be merged. label Dec 23, 2021
@openshift-merge-robot openshift-merge-robot merged commit fbdfd55 into containers:main Dec 23, 2021
@github-actions github-actions bot added the locked - please file new issue/PR Assist humans wanting to comment on an old issue or PR with locked comments. label Sep 22, 2023
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5 participants