DAOS-16286 client: intercept fdatasync()

[wiliamhuang]

To intercept function fdatasync() in libpil4dfs.

Features: pil4dfs

Required-githooks: true

Before requesting gatekeeper:

• Two review approvals and any prior change requests have been resolved.
• Testing is complete and all tests passed or there is a reason documented in the PR why it should be force landed and forced-landing tag is set.
• Features: (or Test-tag*) commit pragma was used or there is a reason documented that there are no appropriate tags for this PR.
• Commit messages follows the guidelines outlined here.
• Any tests skipped by the ticket being addressed have been run and passed in the PR.

Gatekeeper:

• You are the appropriate gatekeeper to be landing the patch.
• The PR has 2 reviews by people familiar with the code, including appropriate owners.
• Githooks were used. If not, request that user install them and check copyright dates.
• Checkpatch issues are resolved. Pay particular attention to ones that will show up on future PRs.
• All builds have passed. Check non-required builds for any new compiler warnings.
• Sufficient testing is done. Check feature pragmas and test tags and that tests skipped for the ticket are run and now pass with the changes.
• If applicable, the PR has addressed any potential version compatibility issues.
• Check the target branch. If it is master branch, should the PR go to a feature branch? If it is a release branch, does it have merge approval in the JIRA ticket.
• Extra checks if forced landing is requested
  • Review comments are sufficiently resolved, particularly by prior reviewers that requested changes.
  • No new NLT or valgrind warnings. Check the classic view.
  • Quick-build or Quick-functional is not used.
• Fix the commit message upon landing. Check the standard here. Edit it to create a single commit. If necessary, ask submitter for a new summary.

[github-actions]

Ticket title is 'Application crash with libpil4dfs.so interception library -- fdatasync: Bad file descriptor'
Status is 'In Review'
Labels: 'HPE'
https://daosio.atlassian.net/browse/DAOS-16286

[wiliamhuang]

The added utest passed without issues.
https://build.hpdd.intel.com/job/daos-stack/job/daos/job/PR-14835/1/testReport/FTEST_daos_test/DaosCoreTestDfuse-io_tests/

[daosbuild1]

Test stage Functional Hardware Medium Verbs Provider completed with status UNSTABLE. https://build.hpdd.intel.com/job/daos-stack/job/daos//view/change-requests/job/PR-14835/1/testReport/

[wiliamhuang]

The only failed test is a known issue reported in ticket https://daosio.atlassian.net/browse/DAOS-16035.
@wangshilong @knard-intel Could you please review? Thank you very much!

[mchaarawi]

looks straightforward / simple enough to request for 2.6.1

[wiliamhuang]

looks straightforward / simple enough to request for 2.6.1

ok. I will create a backport for 2.6.1. Thank you!

[wiliamhuang]

#14859
PR for release/2.6.1 was created.