Arahan dalam Linux (intermediate)

1. lsblk

Untuk melihat 'disks' yang ada dalam linux dan anak-anaknya. Contoh output

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT

sda 8:0 0 200G 0 disk

├─sda1 8:1 0 600M 0 part /boot/efi

├─sda2 8:2 0 1G 0 part /boot

└─sda3 8:3 0 198.4G 0 part

├─almalinux-root 253:0 0 70G 0 lvm /

├─almalinux-swap 253:1 0 7.9G 0 lvm [SWAP]

└─almalinux-home 253:2 0 120.5G 0 lvm /home

sdb 8:16 0 200G 0 disk

2. pvs - nak tengok semua physical volume yang ada. tak semestinya disk ada tapi volume dah ada. Output

PV VG Fmt Attr PSize PFree

/dev/sda3 almalinux lvm2 a-- 198.41g 0

Command yang sama macam pvs adalah pvdisplay. Ni lagi banyak maklumat. Tak macam pvs. Output

--- Physical volume ---

PV Name /dev/sda3

VG Name almalinux

PV Size 198.41 GiB / not usable 2.00 MiB

Allocatable yes (but full)

PE Size 4.00 MiB

Total PE 50793

Free PE 0

Allocated PE 50793

PV UUID GbcRQx-RQOJ-egqT-fuRc-DkI6-q0Ip-oLEnY5

3. vgs - Volume group scan. Untuk tengok volume group yang ada.

VG #PV #LV #SN Attr VSize VFree

almalinux 1 3 0 wz--n- 198.41g 0

Arahan yang serupa adalah vgdisplay. Output

--- Volume group ---

VG Name almalinux

System ID

Format lvm2

Metadata Areas 1

Metadata Sequence No 4

VG Access read/write

VG Status resizable

MAX LV 0

Cur LV 3

Open LV 3

Max PV 0

Cur PV 1

Act PV 1

VG Size 198.41 GiB

PE Size 4.00 MiB

Total PE 50793

Alloc PE / Size 50793 / 198.41 GiB

Free PE / Size 0 / 0

VG UUID F6zi4v-3uVP-kWdm-jZOm-WJeI-6s46-bFJTAF

4. lvs - Logical volume scan. Untuk melihat segala logical volume yang ada

LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert

home almalinux -wi-ao---- 120.52g

root almalinux -wi-ao---- 70.00g

swap almalinux -wi-ao---- <7.89g

Arahan yang hampir serupa adalah lvdisplay. Output

--- Logical volume ---

LV Path /dev/almalinux/swap

LV Name swap

VG Name almalinux

LV UUID Yqta7D-DWFC-OsAf-kaP8-Xsog-xgid-SGVyYg

LV Write Access read/write

LV Creation host, time localhost.localdomain, 2023-01-31 21:54:30 +0800

LV Status available

# open 2

LV Size <7.89 GiB

Current LE 2019

Segments 1

Allocation inherit

Read ahead sectors auto

- currently set to 8192

Block device 253:1

--- Logical volume ---

LV Path /dev/almalinux/home

LV Name home

VG Name almalinux

LV UUID i8zaxO-79nV-7EKH-KCZp-7eDJ-P9ah-BI1SpY

LV Write Access read/write

LV Creation host, time localhost.localdomain, 2023-01-31 21:54:30 +0800

LV Status available

# open 1

LV Size 120.52 GiB

Current LE 30854

Segments 1

Allocation inherit

Read ahead sectors auto

- currently set to 8192

Block device 253:2

--- Logical volume ---

LV Path /dev/almalinux/root

LV Name root

VG Name almalinux

LV UUID 9mC2Dc-94CU-pFgO-cqlQ-L93v-7R2X-QDiCjU

LV Write Access read/write

LV Creation host, time localhost.localdomain, 2023-01-31 21:54:30 +0800

LV Status available

# open 1

LV Size 70.00 GiB

Current LE 17920

Segments 1

Allocation inherit

Read ahead sectors auto

- currently set to 8192

Block device 253:0