How can I check the LVM mirroring under Linux? E.g.: are there any mirrors on a given machine & some details about them, etc.

lvs | fgrep "mwi"

"m" means: mirrored

  • and with this I could be 100% sure that it's not mirrored in any way (on the server)? – LanceBaynes Dec 27 '11 at 7:07

The commands pvdisplay, vgdisplay and lvdisplay will show you the configured physical volumes, volume groups and logical volumes respectively of the LVM subsystem on a machine. mdadm will give you information about the configured raid subsystem.


You can use this too:

cat /proc/mdstat
Personalities :
unused devices: <none>

It means you don't have mirror or any RAID configuration in your system.

  • 1
    How does software RAID relate to LVM? – thrig Mar 16 '17 at 19:34

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