DAOS-17661 control: Maintain hugepage allocations with nvme-rebind

[tanabarr]

The dmg storage nvme-rebind command can be used when, during non-VMD hotplug, a "new" SSD is hot-plugged into a slot that previously contained a faulty SSD. Errors related to creating a new SPDK I/O channel on dmg storage replace nvme have been attributed to the inadvertent shrinking of SPDK hugepage kernel allocations during the nvme-rebind call. This change addresses the problem by maintaining the number of hugepages allocated during nvme-rebind.

Features: control

Steps for the author:

• [ ] Commit message follows the guidelines.
• [ ] Appropriate Features or Test-tag pragmas were used.
• [ ] Appropriate Functional Test Stages were run.
• [ ] At least two positive code reviews including at least one code owner from each category referenced in the PR.
• [ ] Testing is complete. If necessary, forced-landing label added and a reason added in a comment.

After all prior steps are complete:

• [ ] Gatekeeper requested (daos-gatekeeper added as a reviewer).

[github-actions[bot]]

Ticket title is 'Command to rebind NVMe SSD to userspace driver shrinks hugepage allocation' Status is 'In Review' Labels: 'SPDK,hotplug' https://daosio.atlassian.net/browse/DAOS-17661

[daosbuild3]

Test stage Functional Hardware Medium Verbs Provider MD on SSD completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-16493/2/execution/node/1382/log

[daosbuild3]

Test stage Functional Hardware Medium MD on SSD completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-16493/2/execution/node/1337/log

[daosbuild3]

Test stage Functional Hardware Large MD on SSD completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-16493/2/execution/node/1427/log

[daosbuild3]

Test stage Unit Test on EL 8.8 completed with status UNSTABLE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos//view/change-requests/job/PR-16493/4/testReport/

[daosbuild3]

Test stage Functional Hardware Medium MD on SSD completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-16493/4/execution/node/1485/log

[daosbuild3]

Test stage Unit Test on EL 8.8 completed with status UNSTABLE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos//view/change-requests/job/PR-16493/5/testReport/

[tanabarr]

Apologies for force-push, I couldn't get the child PRs in the stack merged cleanly. No changes as the rebase applied clearly with no conflicts. TIA

[tanabarr]

This PR is needed for non-VMD hotplug (CP req).

[daosbuild3]

Test stage Build RPM on EL 8 completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-16493/13/execution/node/307/log

[daosbuild3]

Test stage Build RPM on EL 9 completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-16493/13/execution/node/306/log

[daosbuild3]

Test stage Build RPM on Leap 15.5 completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-16493/13/execution/node/322/log

[tanabarr]

https://jenkins.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos/job/PR-16493/15/ passed all CI test stages

[tanabarr]

reviews please

[tanabarr]

CI run 16 passed all