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podman system df: fix percent calculation #13575

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merged 1 commit into from
Mar 21, 2022

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Luap99
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@Luap99 Luap99 commented Mar 21, 2022

The calculate the percentage we need floating point numbers. The current
code however casted the result of reclaimable/size to an int first.
Casting to an int in go will just discard the decimal points, thus the
result was either 0 or 1 so if multiplied by 100 it would show up as 0%
or 100%.

To fix this we have to multiply by 100 first before casting the result
to an int. Also add a check for div by zero which results in NaN and use
math.Round() to correctly round a number.

Ref #13516

The calculate the percentage we need floating point numbers. The current
code however casted the result of reclaimable/size to an int first.
Casting to an int in go will just discard the decimal points, thus the
result was either 0 or 1 so if multiplied by 100 it would show up as 0%
or 100%.

To fix this we have to multiply by 100 first before casting the result
to an int. Also add a check for div by zero which results in NaN and use
math.Round() to correctly round a number.

Ref containers#13516

Signed-off-by: Paul Holzinger <pholzing@redhat.com>
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openshift-ci bot commented Mar 21, 2022

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Luap99

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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 Mar 21, 2022
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LGTM

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rhatdan commented Mar 21, 2022

/lgtm
/hold

@openshift-ci openshift-ci bot added the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Mar 21, 2022
@openshift-ci openshift-ci bot added the lgtm Indicates that a PR is ready to be merged. label Mar 21, 2022
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/hold cancel

@openshift-ci openshift-ci bot removed the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Mar 21, 2022
@openshift-merge-robot openshift-merge-robot merged commit e034db1 into containers:main Mar 21, 2022
@Luap99 Luap99 deleted the percent branch March 21, 2022 14:07
@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 21, 2023
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4 participants