Linux command
pvdisplay 命令
安全
权限或系统影响较大，执行前请核对目标。
常用示例
Show every physical volume
sudo pvdisplay
Show one specific PV
sudo pvdisplay [/dev/sda2]
Include the map of physical extents
sudo pvdisplay --maps [/dev/sda2]
Short / columnar output
sudo pvdisplay -s
Only show PVs in a given volume group
sudo pvdisplay --select "vg_name=[vg0]"
Display sizes in human units
sudo pvdisplay --units h
JSON-formatted output
sudo pvdisplay --reportformat json
说明
pvdisplay prints per-PV information: device name, owning volume group, PV size, physical-extent (PE) size, total / free / allocated extent counts, allocation policy, UUID, and status. With `--maps` it also lists which logical-extent ranges of which LVs each PE belongs to — useful when planning evacuations with `pvmove` or sanity-checking device failures. For scriptable output, prefer `pvs` (short/columnar, tunable column list) or `pvdisplay -c`.
参数
- -v, --verbose
- Print more detail (repeatable: `-vv`, `-vvv` for more).
- -m, --maps
- Show the mapping of physical extents on this PV to the logical extents of each LV that uses it.
- -s, --short
- Short-form output — just name and size.
- -c, --colon
- Output as a colon-separated single line per PV (scriptable).
- -C, --columns
- Alias for running `pvs(8)`-style columnar output.
- --units _u_
- Report sizes in units _u_: `b`, `k`/`K`, `m`/`M`, `g`/`G`, `t`/`T`, `h` (human). Lower-case = SI (powers of 1000); upper-case = IEC (powers of 1024).
- --select _SELECTION_
- Filter to PVs matching a selection expression (e.g. `vg_name=vg0`, `pv_size>10g`).
- --reportformat _FMT_
- `basic`, `json`, or `json_std`.
- --foreign
- Show PVs owned by other hosts (shared storage).
- --ignorelockingfailure
- Continue even if file/locking fails (read-only operations).
- --nolocking
- Disable locking (for debugging / read-only rescue).
- --help
- Show help.
FAQ
What is the pvdisplay command used for?
pvdisplay prints per-PV information: device name, owning volume group, PV size, physical-extent (PE) size, total / free / allocated extent counts, allocation policy, UUID, and status. With `--maps` it also lists which logical-extent ranges of which LVs each PE belongs to — useful when planning evacuations with `pvmove` or sanity-checking device failures. For scriptable output, prefer `pvs` (short/columnar, tunable column list) or `pvdisplay -c`.
How do I run a basic pvdisplay example?
Run `sudo pvdisplay` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -v, --verbose do in pvdisplay?
Print more detail (repeatable: `-vv`, `-vvv` for more).