聚結器 CFIFO 螺紋鎖定

Summary: 因 cfifo 執行緒爭奪導致叢集死鎖

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Symptoms

可能沒有回應 isi 由於鎖定爭用，命令、性能下降和用戶端連接可能會變得無回應。 

Cause

在某些極少數情況下，群集可能會由於線程爭用而遇到死鎖。
這可能是當多個線程正在執行插入，而另一個線程正在執行聚結器刷新時。 

Resolution

此問題已在 9.4.0.17+、9.5.0.3 hotfix、9.5.0.7 中解決。

若要確認問題是否即時發生，請檢查”cfifo' 使用以下命令在叢集上鎖定線程--

# isi_for_array ‘sysctl kern.proc.all_stacks |grep cfifo’

如果顯示 cfifo 等待超過 100k 個即時報價，則需要節點崩潰才能釋放鎖。 

例子——

Waiting on 0xfffff8142b2dd580 with msg "cfifo" for 32619857 ticks     <------ cfifo waiting for over 100k ticks
    Stack: --------------------------------------------------
    kernel:sched_switch+0xbcc
    kernel:mi_switch+0x128
    kernel:sleepq_wait+0x2b
    kernel:_sleep+0x264
    kernel:write_sleep+0x4e
    kernel:coalescer_insert+0x1e26
    kernel:coalescer_write+0x2bfe
    kernel:bam_coal_write+0x64
    kernel:_ifs_write_mbuf+0x6b
    kernel:ifs_vnop_wrapunlocked_write_mbuf+0xdc
    kernel:VOP_UNLOCKED_WRITE_MBUF_APV+0x93
    isi_lwext.ko:lwextsvc_write+0x4ff
    kernel:amd64_syscall+0x380
    --------------------------------------------------

如果擔心遇到上述問題，必須提出案例以支持完整的日誌收集以供審查。 

Affected Products

PowerScale OneFS
Article Properties
Article Number: 000221351
Article Type: Solution
Last Modified: 02 Jan 2026
Version:  3
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