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多路径守护进程在消息日志中报告 "multipathd:asm!.asm_ctl_vmb" 或 "multipathd: ofsctl: failed to get path uid" 的原因是什么?

Solution In Progress - Updated -

Issue

  • 信息日志中报告的 multipathd: asm!.asm_ctl_vmb 的原因是什么?

    multipathd: asm!.asm_ctl_vbg3: add path (uevent) 
    multipathd: asm!.asm_ctl_vbg3: failed to store path info 
    multipathd: uevent trigger error
    multipathd: ofsctl: add path (uevent)
    multipathd: ofsctl: failed to get path uid
    

    或者

    # multipath -ll
    :
    asm/.asm_ctl_spec: No fc_host device for 'host-1'
    asm/.asm_ctl_vbg0: No fc_host device for 'host-1'
    :
    

Environment

  • Red Hat Enterprise Linux (RHEL) 5, 6, 7, 8
  • device-mapper-multipath
  • Oracle ASM
  • 例外:
    • device-mapper-multipath-0.8.4-2.el8 及更新版本
      • 从多路径的 0.8.4-2.el8 (RHEL 8)版本开始,默认的黑名单被改为 devnode "!^(sd[a-z]|dasd[a-z]|nvme[0-9])"。 这意味着,默认只允许 scsi、dasd 和 nvme 设备用于多路径设备。 因此,将 asm、ofsctl 和 oracleafd 设备列入黑名单。 如果需要,可以在 multipath.conf 中使用 blacklist_exceptions 子句手动添加其它设备类型。 请参阅 Errata: 中的"Fixes":RHEA-2020:4540 ,以获取更多详细信息。

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