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什么是 LVM 过滤器?如何在 RHEL 中配置它?

Solution Verified - Updated -

Issue

  • 服务器上有多个磁盘,但不是所有磁盘都分配给 LVM
  • 默认的 LVM 过滤 filter = [ "a/.*/" ]global_filter = [ "a/.*/" ] 在引导时会造成对 LVM 设置进行额外的、不需要的 I/O 测试。
  • LVM 命令会报告多路径设备中的被动路径 I/O 错误。
  • "LVM 命令报告"Found duplicate" UUID 检测事件"
  • pvs 和 pvscan 命令显示以下消息:

    WARNING: Not useing lvmetad because duplicate PVs were found.
    :
    WARNING: PV <uuid> on /dev/sdX was already found on /dev/mapper/mpatha.
    WARNING: PV <uuid> prefers device /dev/mapper/mpatha becasue device is used by LVM.

Environment

  • Red Hat Enterprise Linux (RHEL) 5、6、7、8
  • Logical Volume Manager (LVM/LVM2)

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