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What is a physical partition?
A physical partition is the smallest unit of storage space allocation and is a contiguous space on a physical volume. Physical volumes inherit the volume group’s physical partition size, which you can set only when you create the volume group (for example, using the mkvg -s command).
Are disk partitions physical?
Although they appear as different disks, they’re still the same physical piece of hardware. There’s only so much speed to go around. You don’t gain the performance benefits from using two separate partitions that you do from using two separate physical drives.
What is a simple volume on a disk?
A simple volume is a portion of a physical disk that functions as though it were a physically separate unit. A simple volume can consist of a single region on a disk or multiple regions of the same disk that are linked together.
What’s the difference between a partition and physical volume?
A “physical extent” is just a consecutive chunk of 4MB (by default) on an LVM physical volume. It’s an LVM concept, not a disk concept.
What’s the difference between a disk, a partition, and an image?
There are disks, partitions, volumes, and images, as well as containers and the ever-popular drives. Windows computers use a similar naming scheme, but there might be small differences. Let’s examine the differences in definition between a drive, disk, volume, partition, and image. A drive is a physical device that’s used to store data.
Which is the logical volume of the LVM partition?
The lvm physical volume (pv) is just a standard partition (with lvm meta data) to be used in lvm volume group (vg) from which a logical volume (lv) can be created , and the final logical volume is just like a block device where you can write a file system and mount it somewhere.
What’s the difference between physical extent and physical volume?
A physical extent (PE) is just that – the actual section of the disk that you’re writing to, very similar to an old-style disk CHS (cylinder-head-sector) address. You will always have PEs in an LVM world. A “physical volume” is LVM terminology for the underlying storage on which it puts data.