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DAOS-18782 cart: Change default mrc settings#18004

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frostedcmos wants to merge 2 commits intorelease/2.6from
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DAOS-18782 cart: Change default mrc settings#18004
frostedcmos wants to merge 2 commits intorelease/2.6from
frostedcmos/DAOS-18768-2.6

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@frostedcmos
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  • Disable mrc for all providers on servers, leave untouched on clients
  • Include UCX_RCACHE_ENABLE=n setting when disabling MRC
  • Move mrc code from per-provider setup to data_init()

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).

- Disable mrc for all providers on servers, leave untouched on clients
- Include UCX_RCACHE_ENABLE=n setting when disabling MRC
- Move mrc code from per-provider setup to data_init()

Signed-off-by: Alexander A Oganezov <alexander.oganezov@hpe.com>
@frostedcmos frostedcmos requested review from a team as code owners April 14, 2026 14:57
@frostedcmos frostedcmos changed the title DAOS-18768 cart: Change default mrc settings DAOS-18782 cart: Change default mrc settings Apr 14, 2026
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Ticket title is 'CART: Disable mrc for ucx and ofi on engines'
Status is 'In Review'
https://daosio.atlassian.net/browse/DAOS-18782

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Closing in favor of #18021

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