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ARM环境上 openEuler扩展根盘并扩展到根分区中

news 2025/7/11 11:23:09

虚拟化平台中在线直接把磁盘40G扩展到100G，系统中无法识别，需要先关闭开机器后才可以识别到是100G

[root@openeuler ~]# uname -m
aarch64

[root@openeuler ~]# more /etc/os-release
NAME="openEuler"
VERSION="22.03 (LTS-SP4)"
ID="openEuler"
VERSION_ID="22.03"
PRETTY_NAME="openEuler 22.03 (LTS-SP4)"
ANSI_COLOR="0;31"
[root@openeuler ~]# vgs
VG #PV #LV #SN Attr VSize VFree
openeuler 1 2 0 wz--n- 38.41g 0
[root@openeuler ~]# lvdisplay
--- Logical volume ---
LV Path /dev/openeuler/root
LV Name root
VG Name openeuler
LV UUID rHuEgp-5lpI-HYIc-6sCg-ht7i-UmF8-okp27I
LV Write Access read/write
LV Creation host, time openeuler, 2024-12-01 23:48:52 +0800
LV Status available
# open 1
LV Size 22.41 GiB
Current LE 5737
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0

--- Logical volume ---
LV Path /dev/openeuler/swap
LV Name swap
VG Name openeuler
LV UUID sicsoy-TJMe-Nayq-br09-696r-7c6w-grPVkH
LV Write Access read/write
LV Creation host, time openeuler, 2024-12-01 23:48:53 +0800
LV Status available
# open 2
LV Size 16.00 GiB
Current LE 4096
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:1

[root@openeuler ~]# fdisk -l /dev/vda --查看磁盘大小及磁盘格式
GPT PMBR size mismatch (83886079 != 209715199) will be corrected by write.
The backup GPT table is not on the end of the device.
Disk /dev/vda: 100 GiB, 107374182400 bytes, 209715200 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: 6B1A02AA-01E2-4BBA-8BB0-D3F524D83E2F

Device Start End Sectors Size Type
/dev/vda1 2048 1230847 1228800 600M EFI System
/dev/vda2 1230848 81786879 80556032 38.4G Linux LVM
/dev/vda3 81786880 83884031 2097152 1G Linux filesystem
[root@openeuler ~]# parted /dev/vda --因是gpt格式磁盘，建议使用parted分区
GNU Parted 3.5
Using /dev/vda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Warning: Not all of the space available to /dev/vda appears to be used, you can fix the GPT to use all of the space (an extra 125829120 blocks) or continue with the current
setting?
Fix/Ignore? Fix --这里必须是Fix，选择Ignore分区无效
Model: Virtio Block Device (virtblk)
Disk /dev/vda: 107GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 1049kB 630MB 629MB fat32 EFI System Partition boot, esp
2 630MB 41.9GB 41.2GB lvm
3 41.9GB 42.9GB 1074MB xfs

(parted) mkpart
Partition name? []?
File system type? [ext2]? xfs
Start? 42.9GB
End? 107GB
(parted) p
Model: Virtio Block Device (virtblk)
Disk /dev/vda: 107GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 1049kB 630MB 629MB fat32 EFI System Partition boot, esp
2 630MB 41.9GB 41.2GB lvm
3 41.9GB 42.9GB 1074MB xfs
4 42.9GB 107GB 64.4GB xfs

(parted) q
Information: You may need to update /etc/fstab.

[root@openeuler ~]# vgextend openeuler /dev/vda4
Physical volume "/dev/vda4" successfully created.
Volume group "openeuler" successfully extended
[root@openeuler ~]# vgs
VG #PV #LV #SN Attr VSize VFree
openeuler 2 2 0 wz--n- <98.41g <60.00g
[root@openeuler ~]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 4.0M 0 4.0M 0% /dev
tmpfs 16G 0 16G 0% /dev/shm
tmpfs 6.1G 9.3M 6.1G 1% /run
tmpfs 4.0M 0 4.0M 0% /sys/fs/cgroup
/dev/mapper/openeuler-root 23G 2.3G 21G 10% /
tmpfs 16G 0 16G 0% /tmp
/dev/vda3 1014M 156M 859M 16% /boot
/dev/vda1 599M 6.5M 593M 2% /boot/efi

[root@openeuler ~]# xfs_info /dev/mapper/openeuler-root
meta-data=/dev/mapper/openeuler-root isize=512 agcount=4, agsize=1468672 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=0
= reflink=1 bigtime=1 inobtcount=0
data = bsize=4096 blocks=5874688, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=4096 blocks=2868, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@openeuler ~]#

[root@openeuler ~]# lvextend -l +100%FREE /dev/mapper/openeuler-root
Size of logical volume openeuler/root changed from 22.41 GiB (5737 extents) to <82.41 GiB (21096 extents).
Logical volume openeuler/root successfully resized.
[root@openeuler ~]# xfs_growfs /dev/mapper/openeuler-root
meta-data=/dev/mapper/openeuler-root isize=512 agcount=4, agsize=1468672 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=0
= reflink=1 bigtime=1 inobtcount=0
data = bsize=4096 blocks=5874688, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=4096 blocks=2868, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 5874688 to 21602304
[root@openeuler ~]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 4.0M 0 4.0M 0% /dev
tmpfs 16G 0 16G 0% /dev/shm
tmpfs 6.1G 9.3M 6.1G 1% /run
tmpfs 4.0M 0 4.0M 0% /sys/fs/cgroup
/dev/mapper/openeuler-root 83G 2.7G 80G 4% /
tmpfs 16G 0 16G 0% /tmp
/dev/vda3 1014M 156M 859M 16% /boot
/dev/vda1 599M 6.5M 593M 2% /boot/efi
[root@openeuler ~]#