关于linux:记一次-Ubuntu-Linux-动态调整分区空间

64次阅读

共计 5496 个字符，预计需要花费 14 分钟才能阅读完成。

1. 背景

用了一段时间后，发现 Ubuntu 空间太小了不够用了。于是扩容了硬盘大小，同时须要对分区进行调整来进行扩容。

零碎采纳的 LVM(Logical Volume Manager) 的形式进行治理的。

2. 解决

这里分两种状况进行解决：

  1. LV(Logical Volume) 没有用尽 VG(Volume Group)。
  2. VG(Volume Group) 没有用尽 PV(Physical Volume)，或者 PV(Physical Volume) 没有关联物理分区。

2.1 LV 应用全副 VG

能够看到 / 由 /dev/mapper/ubuntu--vg-ubuntu--lv 挂载：

$ df -hl
Filesystem                         Size  Used Avail Use% Mounted on
tmpfs                              196M  1.4M  195M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv  9.8G  7.5G  1.8G  81% /
tmpfs                              980M   16K  980M   1% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
/dev/sda2                          1.8G  127M  1.5G   8% /boot
tmpfs                              196M  4.0K  196M   1% /run/user/1000

ubuntu--vg-ubuntu--lv 应用的是 sda3 分区，而 sda3 总共 18.2G，ubuntu--vg-ubuntu--lv 只用了 10G:

$ sudo lsblk
NAME                      MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
fd0                         2:0    1    4K  0 disk 
loop0                       7:0    0 79.9M  1 loop /snap/lxd/22923
loop1                       7:1    0   62M  1 loop /snap/core20/1587
loop2                       7:2    0   47M  1 loop /snap/snapd/16292
sda                         8:0    0   50G  0 disk 
├─sda1                      8:1    0    1M  0 part 
├─sda2                      8:2    0  1.8G  0 part /boot
└─sda3                      8:3    0 18.2G  0 part 
  └─ubuntu--vg-ubuntu--lv 253:0    0   10G  0 lvm  /
# VG ubuntu-vg 残余 8.22G
$ sudo vgdisplay -A
--- Volume group ---
VG Name               ubuntu-vg
System ID             
Format                lvm2
Metadata Areas        1
Metadata Sequence No  2
VG Access             read/write
VG Status             resizable
MAX LV                0
Cur LV                1
Open LV               1
Max PV                0
Cur PV                1
Act PV                1
VG Size               18.22 GiB
PE Size               4.00 MiB
Total PE              4665
Alloc PE / Size       2560 / 10.00 GiB
Free  PE / Size       2105 / 8.22 GiB
VG UUID               gHs11o-PLvl-3cw4-SIax-mcw6-7RCx-D4BEpo

两条命令调整 LV 占用 VG 的全副空间：

$ sudo lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv
$ sudo resize2fs /dev/ubuntu-vg/ubuntu-lv

后果，扩容胜利：

$ sudo lsblk
NAME                      MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
fd0                         2:0    1    4K  0 disk 
loop0                       7:0    0 79.9M  1 loop /snap/lxd/22923
loop1                       7:1    0   62M  1 loop /snap/core20/1587
loop2                       7:2    0   47M  1 loop /snap/snapd/16292
sda                         8:0    0   50G  0 disk 
├─sda1                      8:1    0    1M  0 part 
├─sda2                      8:2    0  1.8G  0 part /boot
└─sda3                      8:3    0 18.2G  0 part 
  └─ubuntu--vg-ubuntu--lv 253:0    0 18.2G  0 lvm  /

2.2 VG 关联物理分区进行扩容

这里以不损坏数据为前提，所以就不对原分区 /dev/sda3 进行调整了。而是采纳将磁盘可用空间创立一个新的 /dev/sda4 分区，而后去关联 VG，毕竟 LVM 非常灵活。

上面对新减少的 30GB 进行解决。

创立分区 sda4，将设置为 lvm 类型：

$ sudo fdisk /dev/sda
==> Command (m for help): p

Disk /dev/sda: 50 GiB, 53687091200 bytes, 104857600 sectors
Disk model: VMware Virtual S
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: 3A0A0460-1FC2-46FF-A278-3299E8F2B745

Device       Start      End  Sectors  Size Type
/dev/sda1     2048     4095     2048    1M BIOS boot
/dev/sda2     4096  3719167  3715072  1.8G Linux filesystem
/dev/sda3  3719168 41940991 38221824 18.2G Linux filesystem

===> Command (m for help): n
Partition number (4-128, default 4): 
First sector (41940992-104857566, default 41940992): 
Last sector, +/-sectors or +/-size{K,M,G,T,P} (41940992-104857566, default 104857566): 

Created a new partition 4 of type 'Linux filesystem' and of size 30 GiB.

===> Command (m for help): p
Disk /dev/sda: 50 GiB, 53687091200 bytes, 104857600 sectors
Disk model: VMware Virtual S
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: 3A0A0460-1FC2-46FF-A278-3299E8F2B745

Device        Start       End  Sectors  Size Type
/dev/sda1      2048      4095     2048    1M BIOS boot
/dev/sda2      4096   3719167  3715072  1.8G Linux filesystem
/dev/sda3   3719168  41940991 38221824 18.2G Linux filesystem
/dev/sda4  41940992 104857566 62916575   30G Linux filesystem

===> Command (m for help): t
===> Partition number (1-4, default 4): 
===> Partition type or alias (type L to list all): lvm

Changed type of partition 'Linux filesystem' to 'Linux LVM'.

===> Command (m for help): p
Disk /dev/sda: 50 GiB, 53687091200 bytes, 104857600 sectors
Disk model: VMware Virtual S
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: 3A0A0460-1FC2-46FF-A278-3299E8F2B745

Device        Start       End  Sectors  Size Type
/dev/sda1      2048      4095     2048    1M BIOS boot
/dev/sda2      4096   3719167  3715072  1.8G Linux filesystem
/dev/sda3   3719168  41940991 38221824 18.2G Linux filesystem
/dev/sda4  41940992 104857566 62916575   30G Linux LVM

===> Command (m for help): w
The partition table has been altered.
Syncing disks.

能够看到 sda4 创立胜利，并应用所有可用空间：

$ sudo lsblk
NAME                      MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
fd0                         2:0    1    4K  0 disk 
loop0                       7:0    0 79.9M  1 loop /snap/lxd/22923
loop1                       7:1    0   62M  1 loop /snap/core20/1587
loop2                       7:2    0   47M  1 loop /snap/snapd/16292
sda                         8:0    0   50G  0 disk 
├─sda1                      8:1    0    1M  0 part 
├─sda2                      8:2    0  1.8G  0 part /boot
├─sda3                      8:3    0 18.2G  0 part 
│ └─ubuntu--vg-ubuntu--lv 253:0    0 18.2G  0 lvm  /
└─sda4                      8:4    0   30G  0 part

将 sda4 创立成 PV(Physical Volume)：

$ sudo pvcreate /dev/sda4
  Physical volume "/dev/sda4" successfully created.

$ sudo pvdisplay
  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               ubuntu-vg
  PV Size               <18.23 GiB / not usable 3.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              4665
  Free PE               0
  Allocated PE          4665
  PV UUID               vO0lgC-X0bG-nUat-kevg-FONv-OpNh-qwY5zF
   
  "/dev/sda4" is a new physical volume of "30.00 GiB"
  --- NEW Physical volume ---
  PV Name               /dev/sda4
  VG Name               
  PV Size               30.00 GiB
  Allocatable           NO
  PE Size               0   
  Total PE              0
  Free PE               0
  Allocated PE          0
  PV UUID               A87gcC-J2mc-3jPD-4emh-8Ute-VQ52-Ceg7zu

将 sda4 扩容到以后的 VG：

# 查看以后 VG
$ sudo vgdisplay
  --- Volume group ---
  VG Name               ubuntu-vg
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               1
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               18.22 GiB
  PE Size               4.00 MiB
  Total PE              4665
  Alloc PE / Size       4665 / 18.22 GiB
  Free  PE / Size       0 / 0   
  VG UUID               gHs11o-PLvl-3cw4-SIax-mcw6-7RCx-D4BEpo

# 将 PV 增加到 VG
$ sudo vgextend ubuntu-vg /dev/sda4

# 扩大胜利
$ sudo vgdisplay
  --- Volume group ---
  VG Name               ubuntu-vg
  System ID             
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  4
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               1
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               <48.22 GiB
  PE Size               4.00 MiB
  Total PE              12344
  Alloc PE / Size       4665 / 18.22 GiB
  Free  PE / Size       7679 / <30.00 GiB
  VG UUID               gHs11o-PLvl-3cw4-SIax-mcw6-7RCx-D4BEpo

接下来就同 2.1 的操作了：

$ sudo lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv
$ sudo resize2fs /dev/ubuntu-vg/ubuntu-lv

$ sudo lsblk
NAME                      MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
fd0                         2:0    1    4K  0 disk 
loop0                       7:0    0 79.9M  1 loop /snap/lxd/22923
loop1                       7:1    0   62M  1 loop /snap/core20/1587
loop2                       7:2    0   47M  1 loop /snap/snapd/16292
sda                         8:0    0   50G  0 disk 
├─sda1                      8:1    0    1M  0 part 
├─sda2                      8:2    0  1.8G  0 part /boot
├─sda3                      8:3    0 18.2G  0 part 
│ └─ubuntu--vg-ubuntu--lv 253:0    0 48.2G  0 lvm  /
└─sda4                      8:4    0   30G  0 part 
  └─ubuntu--vg-ubuntu--lv 253:0    0 48.2G  0 lvm  /

🌟 Github 原文地址

正文完
linux
发表至： linux
2022-10-26
 0
关于linux:Linux系统Manjaro分辨率调整恢复
开源性能可视化工具FlameScope模式识别
2020linux课程期末复习
linux下-配置tomcat使用https-附-申请证书过程