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[Linux] 一个关于 md 和 lvm 的问题

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做了一套这样的存储布局:

  1. 先用 md ,每两只磁盘做一个 raid1 ,做了 3 组
  2. 然后用 lvm ,将 3 组 md 做成 3 个 pv (--dataalignment 64K ),组成 1 个 vg ,再组一个条带 lv (近似 raid0 ,-i 3 )
  3. 这个 lv 再格式化为一个 ext4 ( block=4k ,stride=16,stripe-width=48 )

以前也组过类似的组合,不过只有 2 组 raid0 。并且通过 iostat 检查磁盘读写来定时让磁盘休眠。

现在新组的这套存储,iostat 发现每隔几秒就有几 k 的数据写入。用 lsof 也没找到有进程在使用挂载的文件夹,然后 umount 掉就静止下来了。

有没办法确认到这个文件系统是被哪个进程操作中?

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