由于可写节点不足，StorageGRID EC Rebalance 立即失败

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适用于

NetApp StorageGRID
纠删码 (EC) 重新平衡流程

问题

EC 重新平衡程序在开始新作业或重新启动作业后立即失败，且未尝试任何移动：
- rebalance-data status
  ========================
  JobID: 1234567890
  Site: SiteName
  State: Failure
  Planned Moves: 0
  Completed Moves: 0
  Failed Moves: 0
  Site Imbalance: Unknown
  Retry Rebalance: Yes
  ========================

从主管理节点/var/local/log/rebalance-data.log记录未找到用于 EC 修复的作业：

D, [2026-04-29T12:31:32.611561 #4050370] DEBUG -- : No jobs found for replicated repair for the given parameters {"alert_for_node_repair"=>false, "include_node_repair"=>true, "repair"=>["replicated", "erasure-coded"], "state"=>"running"}
D, [2026-04-29T12:31:32.634167 #4050370] DEBUG -- : No jobs found for erasure-coded repair for the given parameters {"alert_for_node_repair"=>false, "include_node_repair"=>true, "repair"=>["replicated", "erasure-coded"], "state"=>"running"}
I, [2026-04-29T12:31:32.723691 #4050370] INFO -- : EC Site rebalance is restarted successfully.

从EC Job Leader存储节点/var/local/log/bycast.log记录用尽重试限制：

Apr 29 12:28:44 nodename ADE: |21014662 1884999497 ECJM ???? 2026-04-29T12:28:44.205607| NOTICE 0040 ECJM: Starting job 1234567890: Site Rebalance - Group ID 20.
Apr 29 12:28:44 nodename ADE: |21014662 1884999497 ECJM ^RDY 2026-04-29T12:28:44.231500| NOTICE 0234 ECJM: 1234567890(rebalance 20): Retrying
Apr 29 12:28:44 nodename ADE: |21014662 1884999497 ECJM ^RDY 2026-04-29T12:28:44.231579| NOTICE 1283 ECJM: 1234567890(rebalance 20): saving state. status: JOBSTATUS_IN_PROGRESS
Apr 29 12:28:44 nodename ADE: |21014662 1884999497 ECJM EVIU 2026-04-29T12:28:44.254866| NOTICE 0281 ECJM: 1234567890(rebalance 20): Already have 0 recommendations, asking for a further 200...
Apr 29 12:28:46 nodename ADE: |21014662 1884999497 ECJM EVIU 2026-04-29T12:28:46.179064| NOTICE 0295 ECJM: 1234567890(rebalance 20): received message GVCR
Apr 29 12:28:46 nodename ADE: |21014662 1884999497 ECJM EVIU 2026-04-29T12:28:46.179083| WARNING 0300 ECJM: 1234567890(rebalance 20): Got error SUNV while trying to retrieve VCS moves. Retrying.
Apr 29 12:28:46 nodename ADE: |21014662 1884999497 ECJM GVCR 2026-04-29T12:28:46.179112| NOTICE 1283 ECJM: 1234567890(rebalance 20): saving state. status: JOBSTATUS_PAUSED
Apr 29 12:28:46 nodename ADE: |21014662 1884999497 ECJM ^RDY 2026-04-29T12:28:46.270051| WARNING 0062 ECJM: Caught exception 'ENFORCE failed: !"Exhausted retry limit or retry time for getting move recommendations"' when running job 1234567890: Site Rebalance - Group ID 20.
Apr 29 12:28:46 nodename ADE: |21014662 1884999497 ECJM ^RDY 2026-04-29T12:28:46.292765| ERROR 1125 PROC: Exception: /build/src/modules/ErasureCoding/EC_JobManager_Module/SiteRebalanceJob.cc(382): Throw in function getMoveRecommendations#012Dynamic exception type: boost::wrapexcept<std::runtime_error>#012std::exception::what: ENFORCE failed: !"Exhausted retry limit or retry time for getting move recommendations"#012
某些存储节点处于只读状态。
ILM placement unachievable 警报也可能存在。