凝聚器 CFIFO 螺纹锁紧

Summary: CFIFO 线程争用导致群集死锁

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Symptoms

可能无响应 isi 由于锁定争用，命令、性能下降和客户端连接可能看起来变得无响应。 

Cause

在极少数情况下，由于线程争用，群集可能会遇到死锁。
这可能是多个线程执行插入，而另一个线程执行合并器刷新的情况。 

Resolution

此问题已在 9.4.0.17+、9.5.0.3 修补程序、9.5.0.7 中得到解决。

要确认问题实时发生，请检查”cfifo' 线程锁定在群集上使用以下命令--

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

如果显示 cfifo 等待超过 10 万个滴答周期，则需要节点崩溃才能释放锁定。 

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
    --------------------------------------------------

如果担心遇到上述问题，则必须向支持部门提交案例，并进行完整的日志收集以供审查。 

Affected Products

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