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PVE下UEFI引导的Centos7扩容

  • ~11.72K 字
  1. 1. 说明
  2. 2. 要求
  3. 3. 实施
    1. 3.1. 后台磁盘扩容
    2. 3.2. 查看扩容后磁盘大小 以及 分区类型
    3. 3.3. 扩容
      1. 3.3.1. 将扩容部分创建为新分区并设置为 8E00 分区类型
      2. 3.3.2. 显示设备和分区的概要信息
      3. 3.3.3. 显示现在可用块设备的信息
      4. 3.3.4. 显示现在物理卷
      5. 3.3.5. 将新建分区初始化为物理卷
      6. 3.3.6. 显示当前最新物理卷
      7. 3.3.7. 显示现有 LVM 卷组的信息
      8. 3.3.8. 向 LVM 卷组中添加物理卷
      9. 3.3.9. 调整 LVM 卷组中逻辑卷的空间大小
      10. 3.3.10. 更新文件系统信息
      11. 3.3.11. 验证扩容成功
  4. 4. 参考

说明

家里 PVE 服务器创建的 Centos7 虚拟机由于当时创建的时候只选了 20G，并且采用了 UEFI 引导，结果这段时间容量快满了，不想加另外一盘通过挂载来搞，所以就基于原盘进行扩容。

要求

增加 10G 将原来的 20G 扩容成 30G

实施

后台磁盘扩容

alt

alt

查看扩容后磁盘大小 以及 分区类型

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[root@drone-runner-exec ~]# gdisk -l /dev/sda
GPT fdisk (gdisk) version 0.8.10

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.
Disk /dev/sda: 62914560 sectors, 30.0 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): E8568926-5BBE-49AB-82E8-24044A0B914E
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 41943006
Partitions will be aligned on 2048-sector boundaries
Total free space is 2014 sectors (1007.0 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048          411647   200.0 MiB   EF00  EFI System Partition
   2          411648         2508799   1024.0 MiB  0700
   3         2508800        20969471   8.8 GiB     8E00
   4        20969472        41943006   10.0 GiB    8E00  Linux LVM

扩容

将扩容部分创建为新分区并设置为 8E00 分区类型

由于原来创建分区容量有一点未使用空间，现先将的未使用空间创建一个新分区

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[root@drone-runner-exec ~]# gdisk /dev/sda
GPT fdisk (gdisk) version 0.8.10

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.

Command (? for help): p
Disk /dev/sda: 62914560 sectors, 30.0 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): E8568926-5BBE-49AB-82E8-24044A0B914E
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 41943006
Partitions will be aligned on 2048-sector boundaries
Total free space is 2014 sectors (1007.0 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048          411647   200.0 MiB   EF00  EFI System Partition
   2          411648         2508799   1024.0 MiB  0700
   3         2508800        20969471   8.8 GiB     8E00
   4        20969472        41943006   10.0 GiB    8E00  Linux LVM

Command (? for help): n
Partition number (5-128, default 5):
First sector (34-2047, default = 34) or {+-}size{KMGTP}:
Last sector (34-2047, default = 2047) or {+-}size{KMGTP}:
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300): 8e00
Changed type of partition to 'Linux LVM'

Command (? for help): w
Warning! Secondary header is placed too early on the disk! Do you want to
correct this problem? (Y/N): y
Have moved second header and partition table to correct location.

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!

Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/sda.
Warning: The kernel is still using the old partition table.
The new table will be used at the next reboot.
The operation has completed successfully.

删掉上面新建的分区，让其合并进扩容容量中，在进行扩容部分的新分区创建

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[root@drone-runner-exec ~]# gdisk /dev/sda
GPT fdisk (gdisk) version 0.8.10

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.

Command (? for help): p
Disk /dev/sda: 62914560 sectors, 30.0 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): E8568926-5BBE-49AB-82E8-24044A0B914E
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 62914526
Partitions will be aligned on 2-sector boundaries
Total free space is 20971520 sectors (10.0 GiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048          411647   200.0 MiB   EF00  EFI System Partition
   2          411648         2508799   1024.0 MiB  0700
   3         2508800        20969471   8.8 GiB     8E00
   4        20969472        41943006   10.0 GiB    8E00  Linux LVM
   5              34            2047   1007.0 KiB  8E00  Linux LVM

Command (? for help): d
Partition number (1-5): 5

Command (? for help): p
Disk /dev/sda: 62914560 sectors, 30.0 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): E8568926-5BBE-49AB-82E8-24044A0B914E
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 62914526
Partitions will be aligned on 2-sector boundaries
Total free space is 20973534 sectors (10.0 GiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048          411647   200.0 MiB   EF00  EFI System Partition
   2          411648         2508799   1024.0 MiB  0700
   3         2508800        20969471   8.8 GiB     8E00
   4        20969472        41943006   10.0 GiB    8E00  Linux LVM

Command (? for help): n
Partition number (5-128, default 5):
First sector (34-62914526, default = 41943008) or {+-}size{KMGTP}:
Last sector (41943008-62914526, default = 62914526) or {+-}size{KMGTP}:
Current type is 'Linux filesystem'
Hex code or GUID (L to show codes, Enter = 8300): 8e00
Changed type of partition to 'Linux LVM'

Command (? for help): p
Disk /dev/sda: 62914560 sectors, 30.0 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): E8568926-5BBE-49AB-82E8-24044A0B914E
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 62914526
Partitions will be aligned on 2-sector boundaries
Total free space is 2015 sectors (1007.5 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048          411647   200.0 MiB   EF00  EFI System Partition
   2          411648         2508799   1024.0 MiB  0700
   3         2508800        20969471   8.8 GiB     8E00
   4        20969472        41943006   10.0 GiB    8E00  Linux LVM
   5        41943008        62914526   10.0 GiB    8E00  Linux LVM

Command (? for help): w

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!

Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/sda.
Warning: The kernel is still using the old partition table.
The new table will be used at the next reboot.
The operation has completed successfully.

显示设备和分区的概要信息

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[root@drone-runner-exec ~]# partprobe -s
/dev/sda: gpt partitions 1 2 3 4 5

显示现在可用块设备的信息

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[root@drone-runner-exec ~]# lsblk
NAME                             MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda                                8:0    0   30G  0 disk
├─sda1                             8:1    0  200M  0 part /boot/efi
├─sda2                             8:2    0    1G  0 part /boot
├─sda3                             8:3    0  8.8G  0 part
│ ├─centos_centos--template-root 253:0    0 17.8G  0 lvm  /
│ └─centos_centos--template-swap 253:1    0    1G  0 lvm  [SWAP]
├─sda4                             8:4    0   10G  0 part
│ └─centos_centos--template-root 253:0    0 17.8G  0 lvm  /
└─sda5                             8:5    0   10G  0 part

显示现在物理卷

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root@drone-runner-exec ~]# pvdisplay
  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               centos_centos-template
  PV Size               8.80 GiB / not usable 2.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              2253
  Free PE               0
  Allocated PE          2253
  PV UUID               QltmTV-hBoU-pASF-ioB9-llMd-AVgD-o766Qw

  --- Physical volume ---
  PV Name               /dev/sda4
  VG Name               centos_centos-template
  PV Size               10.00 GiB / not usable 4.98 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              2559
  Free PE               0
  Allocated PE          2559
  PV UUID               IBn2Rz-RURW-jrbM-Ijik-LXK5-73uj-5czCPv

将新建分区初始化为物理卷

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[root@drone-runner-exec ~]# pvcreate /dev/sda5
  Physical volume "/dev/sda5" successfully created.

显示当前最新物理卷

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[root@drone-runner-exec ~]# pvdisplay
  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               centos_centos-template
  PV Size               8.80 GiB / not usable 2.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              2253
  Free PE               0
  Allocated PE          2253
  PV UUID               QltmTV-hBoU-pASF-ioB9-llMd-AVgD-o766Qw

  --- Physical volume ---
  PV Name               /dev/sda4
  VG Name               centos_centos-template
  PV Size               10.00 GiB / not usable 4.98 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              2559
  Free PE               0
  Allocated PE          2559
  PV UUID               IBn2Rz-RURW-jrbM-Ijik-LXK5-73uj-5czCPv

  "/dev/sda5" is a new physical volume of "<10.00 GiB"
  --- NEW Physical volume ---
  PV Name               /dev/sda5
  VG Name
  PV Size               <10.00 GiB
  Allocatable           NO
  PE Size               0
  Total PE              0
  Free PE               0
  Allocated PE          0
  PV UUID               dwGjV0-M3JC-vczv-pM25-qyH5-5pgo-BbtVGf

显示现有 LVM 卷组的信息

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[root@drone-runner-exec ~]# vgdisplay
  --- Volume group ---
  VG Name               centos_centos-template
  System ID
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  5
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               <18.80 GiB
  PE Size               4.00 MiB
  Total PE              4812
  Alloc PE / Size       4812 / <18.80 GiB
  Free  PE / Size       0 / 0
  VG UUID               JagpPX-SGkz-UurK-7pJH-UxZD-HFTh-7invRM

向 LVM 卷组中添加物理卷

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[root@drone-runner-exec ~]# vgextend centos_centos-template /dev/sda5
  Volume group "centos_centos-template" successfully extended

调整 LVM 卷组中逻辑卷的空间大小

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[root@drone-runner-exec ~]# lvresize -l +100%FREE /dev/centos_centos-template/root
  Size of logical volume centos_centos-template/root changed from <17.80 GiB (4556 extents) to 27.79 GiB (7115 extents).
  Logical volume centos_centos-template/root successfully resized.

更新文件系统信息

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[root@drone-runner-exec ~]# xfs_growfs /
meta-data=/dev/mapper/centos_centos--template-root isize=512    agcount=10, agsize=511232 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=4665344, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 4665344 to 7285760

验证扩容成功

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[root@drone-runner-exec ~]# df -lh
文件系统                                  容量  已用  可用 已用% 挂载点
devtmpfs                                  1.9G     0  1.9G    0% /dev
tmpfs                                     1.9G     0  1.9G    0% /dev/shm
tmpfs                                     1.9G  8.6M  1.9G    1% /run
tmpfs                                     1.9G     0  1.9G    0% /sys/fs/cgroup
/dev/mapper/centos_centos--template-root   28G  2.1G   26G    8% /
/dev/sda2                                1014M  187M  828M   19% /boot
/dev/sda1                                 200M   12M  189M    6% /boot/efi
tmpfs                                     379M     0  379M    0% /run/user/0

参考

CentOS7 的 LVM 动态扩容

本作品采用 知识共享署名-相同方式共享 4.0 国际许可协议 进行许可