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Reduce calls to EFS API#1226

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mskanth972 merged 1 commit into
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otorreno:reduce-calls-to-efs-api
Jan 3, 2024
Merged

Reduce calls to EFS API#1226
mskanth972 merged 1 commit into
kubernetes-sigs:masterfrom
otorreno:reduce-calls-to-efs-api

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@otorreno otorreno commented Dec 29, 2023 •
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Is this a bug fix or adding new feature?
Bug fix

What is this PR about? / Why do we need it?
With #850, the new way of allocating GIDs introduced a new call to the ListAccessPoints endpoint of EFS API, that is generating problems on systems where EFS CSI driver is under high load (lots of PVC created within a short time period). In this PR, we are extracting the ListAccessPoints call from gid_allocator, moving it one level up. In case of dynamic provisioining of GIDs we can reuse the ListAccessPoints call to check for the file system existence (thus removing the DescribeFileSystem call in such case). In case of a fixed UID/GID, we continue calling DescribeFileSystem, and no calls to ListAccessPoints.

In addition to the change explained above, gidMin and gidMax have been converted to int64. #850 made both uid and gid int64, but gidMin and gidMax were nout touched. Also changing the default value for gidMax, as the value of 7000000 was spamming the logs with a message coming from gid_allocator (i.e. range bigger than the max number of access points). Setting the value to 51000 (the value that gid_allocator was setting by adding 1000 to gidMin). Removing an unused function and field from gid_allocator too.

What testing is done?
Coverage with unit tests

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linux-foundation-easycla Bot commented Dec 29, 2023 •
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CLA Signed

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  • ✅ login: otorreno / name: Oscar Torreno (dbbc733)

@k8s-ci-robot k8s-ci-robot added the cncf-cla: no Indicates the PR's author has not signed the CNCF CLA. label Dec 29, 2023
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k8s-ci-robot commented Dec 29, 2023

Welcome @otorreno!

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@k8s-ci-robot k8s-ci-robot added the needs-ok-to-test Indicates a PR that requires an org member to verify it is safe to test. label Dec 29, 2023
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k8s-ci-robot commented Dec 29, 2023

Hi @otorreno. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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@k8s-ci-robot k8s-ci-robot requested a review from wongma7 December 29, 2023 21:21
@k8s-ci-robot k8s-ci-robot added the size/L Denotes a PR that changes 100-499 lines, ignoring generated files. label Dec 29, 2023
@otorreno otorreno force-pushed the reduce-calls-to-efs-api branch from b36b4ef to a80e7b0 Compare December 29, 2023 21:22
@k8s-ci-robot k8s-ci-robot added cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. and removed cncf-cla: no Indicates the PR's author has not signed the CNCF CLA. labels Dec 29, 2023
@otorreno otorreno mentioned this pull request Dec 29, 2023
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@otorreno otorreno force-pushed the reduce-calls-to-efs-api branch from a80e7b0 to e2489a5 Compare December 29, 2023 21:31
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otorreno commented Dec 30, 2023

#1217 should be merged before this one, as it is the reason #1225 is happening I believe. I will then rebase and fix the merge conflicts here

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otorreno commented Dec 30, 2023

@mskanth972 you may want to review this one as it is in the same area of code of #1217

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mskanth972 commented Jan 2, 2024

Hi @otorreno, the respected PR is merged, can you rebase this PR?
Thanks

@k8s-ci-robot k8s-ci-robot added the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label Jan 2, 2024
@otorreno otorreno force-pushed the reduce-calls-to-efs-api branch from e2489a5 to 693fe84 Compare January 2, 2024 21:51
@k8s-ci-robot k8s-ci-robot removed the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label Jan 2, 2024
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otorreno commented Jan 2, 2024 •
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@mskanth972 rebased on top of latest master. Commit message and original comment for the PR updated, as I had to change gidMax instead of gidMin (because #1217 flipped the overriden param in case the range is too wide)

@otorreno
Reduce calls to EFS API
dbbc733 
With kubernetes-sigs#850, the new way of allocating GIDs introduced a new call
to the ListAccessPoints endpoint of EFS API, that is generating
problems on systems where EFS CSI driver is under high load
(lots of PVC created within a short time period). In this PR,
we are extracting the ListAccessPoints call from gid_allocator,
moving it one level up. In case of dynamic provisioining of GIDs
we can reuse the ListAccessPoints call to check for the file
system existence (thus removing the DescribeFileSystem call in
such case). In case of a fixed UID/GID, we continue calling
DescribeFileSystem, and no calls to ListAccessPoints.

In addition to the change explained above, gidMin and gidMax have
been converted to int64. kubernetes-sigs#850 made both uid and gid int64, but
gidMin and gidMax were nout touched. Also changing the default
value for gidMax, as the value of 7000000 was spamming the logs
with a message coming from gid_allocator (i.e. range bigger than
the max number of access points). Setting the value to 51000
(the value that gid_allocator was setting by adding 1000 to
gidMin). Removing an unused function and field from gid_allocator
too.
@otorreno otorreno force-pushed the reduce-calls-to-efs-api branch from 693fe84 to dbbc733 Compare January 2, 2024 21:57
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mskanth972 commented Jan 3, 2024

/ok-to-test

@k8s-ci-robot k8s-ci-robot added ok-to-test Indicates a non-member PR verified by an org member that is safe to test. and removed needs-ok-to-test Indicates a PR that requires an org member to verify it is safe to test. labels Jan 3, 2024
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mskanth972 commented Jan 3, 2024

/lgtm

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Jan 3, 2024
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mskanth972 commented Jan 3, 2024

/approve

@k8s-ci-robot k8s-ci-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Jan 3, 2024
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otorreno commented Jan 3, 2024

/approve

Thank you for the review!

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mskanth972 commented Jan 3, 2024

/test pull-aws-efs-csi-driver-unit

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mskanth972 commented Jan 3, 2024

/approve

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k8s-ci-robot commented Jan 3, 2024

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mskanth972, otorreno

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@mskanth972 mskanth972 merged commit f054e2c into kubernetes-sigs:master Jan 3, 2024
@otorreno otorreno deleted the reduce-calls-to-efs-api branch January 3, 2024 21:41
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