linux查看raid信息

linux查看raid信息

 

有时我们需要看一下服务器的raid信息. 

１.软件raid的话可以通过 cat /proc/mdstat 

  md1 : active raid1 sdb3[1] sda3[0] 

      480572352 blocks [2/2] [UU] 

      

  md3 : active raid1 sdb2[1] sda2[0] 

      1952704 blocks [2/2] [UU] 

      

  md2 : active raid1 sda1[0] sdb1[1] 

      194496 blocks [2/2] [UU] 

 

  我的是做了软raid1(sda,sdb两块硬盘).软raid会将设备标记为mdN(硬件raid不会,硬件raid对外表现就像没做raid一样) 

 

2.也可以通过dmesg,比如我的dmesg | grep -i raid 

[    1.020628] md: raid0 personality registered for level 0 

[    1.024236] md: raid1 personality registered for level 1 

[    1.196998] raid6: int64x1   2119 MB/s 

[    1.366685] raid6: int64x2   2724 MB/s 

[    1.536404] raid6: int64x4   1841 MB/s 

[    1.706119] raid6: int64x8   1770 MB/s 

[    1.875805] raid6: sse2x1    5876 MB/s 

[    2.045514] raid6: sse2x2    6967 MB/s 

[    2.215220] raid6: sse2x4    7653 MB/s 

[    2.215221] raid6: using algorithm sse2x4 (7653 MB/s) 

[    2.221300] raid1: raid set md3 active with 2 out of 2 mirrors 

[    2.223621] raid1: raid set md2 active with 2 out of 2 mirrors 

[    2.226764] raid1: raid set md1 active with 2 out of 2 mirrors 

[    2.268897] md: raid6 personality registered for level 6 

[    2.268899] md: raid5 personality registered for level 5 

[    2.268901] md: raid4 personality registered for level 4 

[    2.273807] md: raid10 personality registered for level 10 

 

看raid１的那三行. 

 

我的dell服务器的硬件raid利用dmesg　| grep -i raid结果如下 

[    4.051200] megaraid_sas 0000:03:00.0: PCI INT A -> GSI 38 (level, low) -> IRQ 38 

[    4.051306] megaraid_sas 0000:03:00.0: setting latency timer to 64 

[    4.169477] scsi4 : LSI SAS based MegaRAID driver.