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DAOS-18976 rebuild: refine rebuild SCAN process#18289

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DAOS-18976 rebuild: refine rebuild SCAN process#18289
gnailzenh wants to merge 3 commits into
release/2.6from
liang/b2_6_rebuild_hang

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@gnailzenh gnailzenh commented May 19, 2026 •
edited by liuxuezhao
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1. in rebuild_obj_scan_cb()
   Check rt_finishing to allow rebuild_scan_leader to exit quickly when
   rebuild_tgt_fini() is waiting for the refcount to drop. Without this,
   a stale scan_leader continues scanning all VOS objects indefinitely,
   blocking TLS cleanup and causing retries to fail with -DER_BUSY.
2. in rebuild_tgt_scan_handler()
   fix a race window between rebuild_tgt_fini() ->
   rebuild_pool_tls_destroy() and rebuild_pool_tls_lookup().

Signed-off-by: Liang Zhen <[email protected]>
Co-authored-by: Xuezhao Liu <[email protected]>

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).

@gnailzenh gnailzenh requested review from a team as code owners May 19, 2026 18:30
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github-actions Bot commented May 19, 2026

Ticket title is 'Aurora rebuild failing with DER_HG / DER_SHUTDOWN'
Status is 'In Progress'
Labels: 'test_2.6.5rc1'
https://daosio.atlassian.net/browse/DAOS-18976

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daosbuild3 commented May 19, 2026

Test stage Build RPM on Leap 15 completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-18289/1/execution/node/318/log

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daosbuild3 commented May 19, 2026

Test stage Test RPMs 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-18289/1/execution/node/1159/log

liuxuezhao
liuxuezhao reviewed May 20, 2026
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Comment thread src/object/srv_obj_migrate.c Outdated
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daosbuild3 commented May 20, 2026

Test stage Build RPM on Leap 15 completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-18289/2/execution/node/336/log

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daosbuild3 commented May 20, 2026

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-18289/2/execution/node/335/log

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daosbuild3 commented May 20, 2026

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-18289/2/execution/node/392/log

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daosbuild3 commented May 21, 2026

Test stage Test RPMs on EL 8.6 completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos/job/PR-18289/2/display/redirect

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daosbuild3 commented May 21, 2026

Test stage Test RPMs 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-18289/2/execution/node/1143/log

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daosbuild3 commented May 21, 2026

Test stage Functional on EL 8.8 completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos/job/PR-18289/2/display/redirect

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daosbuild3 commented May 21, 2026

Test stage Functional on EL 8.8 completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos/job/PR-18289/2/display/redirect

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daosbuild3 commented May 21, 2026

Test stage Build RPM on Leap 15 completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-18289/3/execution/node/318/log

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daosbuild3 commented May 21, 2026

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-18289/3/execution/node/309/log

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daosbuild3 commented May 21, 2026

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-18289/3/execution/node/332/log

@gnailzenh gnailzenh force-pushed the liang/b2_6_rebuild_hang branch from 2b2479c to 0e86c5d Compare May 21, 2026 07:57
@gnailzenh @liuxuezhao
DAOS-18976 rebuild: refine rebuild SCAN process
eae35f3 
1. in rebuild_obj_scan_cb()
   Check rt_finishing to allow rebuild_scan_leader to exit quickly when
   rebuild_tgt_fini() is waiting for the refcount to drop. Without this,
   a stale scan_leader continues scanning all VOS objects indefinitely,
   blocking TLS cleanup and causing retries to fail with -DER_BUSY.
2. in rebuild_tgt_scan_handler()
   fix a race window between rebuild_tgt_fini() ->
   rebuild_pool_tls_destroy() and rebuild_pool_tls_lookup().

Signed-off-by: Liang Zhen <[email protected]>
Co-authored-by: Xuezhao Liu <[email protected]>
@liuxuezhao liuxuezhao force-pushed the liang/b2_6_rebuild_hang branch from 0e86c5d to eae35f3 Compare May 22, 2026 07:56
@liuxuezhao liuxuezhao changed the title DAOS-18976 rebuild: avoid to triggerFAIL_RECLAIM too early DAOS-18976 rebuild: refine rebuild SCAN process May 22, 2026
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daosbuild3 commented May 22, 2026

Test stage Functional Hardware Medium completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos/job/PR-18289/4/display/redirect

@liuxuezhao liuxuezhao requested a review from wangshilong May 22, 2026 07:58
liuxuezhao
liuxuezhao previously approved these changes May 22, 2026
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@liuxuezhao liuxuezhao dismissed stale reviews from wangshilong and themself via ae8f65c May 22, 2026 08:23
liuxuezhao
liuxuezhao previously approved these changes May 22, 2026
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@liuxuezhao liuxuezhao requested a review from wangshilong May 22, 2026 08:25
wangshilong
wangshilong previously approved these changes May 22, 2026
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@wangshilong wangshilong mentioned this pull request May 22, 2026
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@liuxuezhao liuxuezhao dismissed stale reviews from wangshilong and themself via 8b95c22 May 22, 2026 09:56
@liuxuezhao liuxuezhao requested a review from wangshilong May 22, 2026 09:58
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daosbuild3 commented May 22, 2026

Test stage Functional Hardware Medium completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-18289/8/execution/node/900/log

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