Linux 系統盤擴容
阿新 • • 發佈：2020-12-15
通過esxi 調整磁碟大小，由20G升級為200G
檢視磁碟和分割槽大小
root@localhost:/home/maoxian# fdisk -l Disk /dev/sda: 200 GiB, 214748364800 bytes, 419430400 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: E39886EF-370D-49F9-A1A5-C3B8152CF3A6 Device Start End Sectors Size Type /dev/sda1 2048 4095 2048 1M BIOS boot /dev/sda2 4096 41940991 41936896 20G Linux filesystem
root@localhost:/home/maoxian# df -h Filesystem Size Used Avail Use% Mounted on udev 7.9G 0 7.9G 0% /dev tmpfs 1.6G 892K 1.6G 1% /run /dev/sda2 20G 7.1G 12G 39% / tmpfs 7.9G 0 7.9G 0% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 7.9G 0 7.9G 0% /sys/fs/cgroup tmpfs 1.6G 0 1.6G 0% /run/user/1000
擴容對應的分割槽，這裡為 /dev/sda 的第 2 個分割槽
root@localhost:/home/maoxian# growpart /dev/sda 2
CHANGED: partition=2 start=4096 old: size=41936896 end=41940992 new: size=419426271,end=419430367
root@localhost:/home/maoxian# resize2fs /dev/sda2 resize2fs 1.44.1 (24-Mar-2018) Filesystem at /dev/sda2 is mounted on /; on-line resizing required old_desc_blocks = 3, new_desc_blocks = 25 The filesystem on /dev/sda2 is now 52428283 (4k) blocks long.
再次檢視分割槽大小
root@localhost:/home/maoxian# df -h
Filesystem Size Used Avail Use% Mounted on
udev 7.9G 0 7.9G 0% /dev
tmpfs 1.6G 892K 1.6G 1% /run
/dev/sda2 197G 7.1G 182G 4% /
tmpfs 7.9G 0 7.9G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 7.9G 0 7.9G 0% /sys/fs/cgroup
tmpfs 1.6G 0 1.6G 0% /run/user/1000
root@localhost:/home/maoxian# fdisk -l
Disk /dev/sda: 200 GiB, 214748364800 bytes, 419430400 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: E39886EF-370D-49F9-A1A5-C3B8152CF3A6
Device Start End Sectors Size Type
/dev/sda1 2048 4095 2048 1M BIOS boot
/dev/sda2 4096 419430366 419426271 200G Linux filesystem