pvcreate fails with "Can't open <device> exclusively. Mounted filesystem?"

Solution Unverified - Updated -


  • pvcreate throws an error:

    # pvcreate /dev/mapper/mpath1
    Can't open /dev/mapper/mpath1 exclusively.  Mounted  filesystem?
  • For vgcreate also below error message is displayed:

    # vgcreate vg1 /dev/mapper/mpath1
    Can't open /dev/mapper/mpath1 exclusively.  Mounted filesystem?
    Unable to add physical volume '/dev/mapper/mpath1' to volume group 'vg1'.


  • Red Hat Enterprise Linux (RHEL) 4, 5, 6
  • LVM2
    • Creating a physical volume with pvcreate

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In