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After having added 2 disks of 1Tb to a Dell PowerEdge, I went through their initialization with the goal to add them to an existing LVM VG.

When the MegaCli background initialization went complete, I did fdisk the new disk to add a Linux LVM partition on it.

Then, pvcreate refused to work:
pvcreate /dev/sdn1
Can't open /dev/sdn1 exclusively. Mounted filesystem?

Part of strace of the pvcreation:
open("/dev/sdn1", O_RDWR|O_EXCL|O_DIRECT|O_NOATIME) = -1 EBUSY (Device or resource busy)

Of course, the device is NOT mounted nor used: (fuser reports nothing).

Any idea why this is blocked?


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