Which command initialises /dev/sdb1 as a physical volume for LVM?

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Multiple Choice

Which command initialises /dev/sdb1 as a physical volume for LVM?

Explanation:
Initialising a device as a physical volume is the first step in setting up LVM. pvcreate writes the LVM metadata to a partition or disk, marking it as a physical volume that can participate in a volume group. Without this metadata, LVM won’t recognize the device as part of any VG, so you can’t create logical volumes on it. Once the device is a PV, you can then build a volume group with vgcreate, and finally create logical volumes with lvcreate. pvdisplay would only show existing PV metadata; it won’t initialise the device. So the command that correctly initialises /dev/sdb1 as a physical volume is pvcreate /dev/sdb1.

Initialising a device as a physical volume is the first step in setting up LVM. pvcreate writes the LVM metadata to a partition or disk, marking it as a physical volume that can participate in a volume group. Without this metadata, LVM won’t recognize the device as part of any VG, so you can’t create logical volumes on it.

Once the device is a PV, you can then build a volume group with vgcreate, and finally create logical volumes with lvcreate. pvdisplay would only show existing PV metadata; it won’t initialise the device.

So the command that correctly initialises /dev/sdb1 as a physical volume is pvcreate /dev/sdb1.

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