mkfs.ext4 hangs with 100% CPU when using an LVM logical volume

Solution Verified - Updated -


  • Attempting to create an ext4 filesystem onto an LVM logical volume hangs, with the cpu at 100% and a forced shutdown is necessary.
  • Creating an ext4 filesystem with mkfs onto a partition succeeds, but doing the same operation on an LVM logical volume hangs.


  • Red Hat Enterprise Linux 7      
  • Red Hat Enterprise Linux 6.1     
    • 2.6.32-131.0.15.el6.x86_64
    • e2fsprogs-1.41.12-7.el6.x86_64
  • Storage Subsystem     
    • ext4 --> LVM LV --> SCSI --> SSD Fusion-IO

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