pvcreate 命令

常用示例

说明

pvcreate initializes a disk or partition for use as a physical volume in LVM. This writes LVM metadata to the device, preparing it to be added to a volume group.

参数

-f, --force

Override various checks, confirmations, and protections. Use twice (`-ff`) to forcibly overwrite an existing physical volume.

-y, --yes

Answer yes to all prompts automatically.

-Z, --zero _y|n_

Controls if the first 4 sectors (2048 bytes) of the device are wiped. Default is yes unless `--restorefile` or `--uuid` are specified.

--metadatasize _size_

Approximate amount of space to set aside for each metadata area on the PV.

--metadatacopies _0|1|2_

Number of metadata area copies on this PV. 0 stores no copies, 1 stores at the front only, 2 stores copies at both front and end.

--metadataignore _y|n_

Whether to ignore metadata areas on this PV. Useful when creating a large number of PVs to limit the number of metadata copies.

--dataalignment _size_

Align the start of the data area to a multiple of this size.

--dataalignmentoffset _size_

Shift the start of the data area by this additional offset.

-u, --uuid _uuid_

Specify a UUID for the physical volume. Without this option, a random UUID is generated. Required when restoring metadata with vgcfgrestore.

--restorefile _file_

Use metadata from a backup file to ensure consistent PV placement when restoring a volume group.

--bootloaderareasize _size_

Reserve space for a bootloader between the LVM metadata and the first physical extent.

--labelsector _number_

Sector number where the LVM2 label is written (default 1).

--setphysicalvolumesize _size_

Override the automatically detected device size.

-v, --verbose

Set verbose level. Can be repeated up to 4 times to increase detail.