虚机磁盘扩容

发表于 Disqus：

vmware 的虚机磁盘扩容，从 vSphere 到 OS 层面

超详细

vSphere Client

不用关机，直接编辑虚拟机硬件，把磁盘大小改大，如 100G => 120G

确定后，等进度条，一般很快就完成

vmware 层面就搞定了

OS

OS 层面可能并未同步更新

可使用echo 1 > /sys/block/sda/device/rescan触发一下

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fdisk -l

Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
Disk model: Virtual disk

echo 1 > /sys/block/sda/device/rescan

fdisk -l

GPT PMBR size mismatch (209715199 != 251658239) will be corrected by write.
The backup GPT table is not on the end of the device.
Disk /dev/sda: 120 GiB, 128849018880 bytes, 251658240 sectors
Disk model: Virtual disk

由于是 AlmaLinux 9，这里我们并不使用 fdisk 进行分区调整，而是使用 parted

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parted -l

Warning: Not all of the space available to /dev/sda appears to be used, you can
fix the GPT to use all of the space (an extra 41943040 blocks) or continue with
the current setting?
Fix/Ignore? fix
Model: VMware Virtual disk (scsi)
Disk /dev/sda: 129GB
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   1704MB  1074MB  xfs
 3      1704MB  107GB   106GB                                      lvm


parted /dev/sda resizepart 3 100%

parted -l

Model: VMware Virtual disk (scsi)
Disk /dev/sda: 129GB
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   1704MB  1074MB  xfs
 3      1704MB  129GB   127GB                                      lvm

此时的 pv 还未更新，使用pvresize生效

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pvdisplay

  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               almalinux_211
  PV Size               98.41 GiB / not usable 2.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              25193
  Free PE               0
  Allocated PE          25193
  PV UUID               77PAja-dDP3-K2Ii-5jgw-AOFW-KnF5-ib8qg2

pvresize /dev/sda3

pvdisplay
  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               almalinux_211
  PV Size               118.41 GiB / not usable 1.98 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              30313
  Free PE               5120
  Allocated PE          25193
  PV UUID               77PAja-dDP3-K2Ii-5jgw-AOFW-KnF5-ib8qg2

接着lvextend你要扩容的 lv，通过df查看挂载点对应的 lv，比如这里我们扩容 root

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df -hT

Filesystem                     Type      Size  Used Avail Use% Mounted on
devtmpfs                       devtmpfs  4.0M     0  4.0M   0% /dev
tmpfs                          tmpfs     7.7G     0  7.7G   0% /dev/shm
tmpfs                          tmpfs     3.1G   65M  3.1G   3% /run
/dev/mapper/almalinux_211-root xfs        61G   56G  4.9G  93% /
/dev/sda2                      xfs       960M  324M  637M  34% /boot
/dev/sda1                      vfat      599M  7.1M  592M   2% /boot/efi
/dev/mapper/almalinux_211-home xfs        30G  4.5G   26G  16% /home

lvextend -l +100%FREE /dev/almalinux_211/root

  Size of logical volume almalinux_211/root changed from <60.84 GiB (15574 extents) to <80.84 GiB (20694 extents).
  Logical volume almalinux_211/root successfully resized.

这里直接再df查看会发现 root 并未扩大，需要最 grow 一下生效，这里是 xfs 所以使用 xfs_growfs

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xfs_growfs /dev/almalinux_211/root

meta-data=/dev/mapper/almalinux_211-root isize=512    agcount=4, agsize=3986944 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1    bigtime=1 inobtcount=1 nrext64=0
data     =                       bsize=4096   blocks=15947776, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=16384, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
data blocks changed from 15947776 to 21190656

df -h
Filesystem                      Size  Used Avail Use% Mounted on
devtmpfs                        4.0M     0  4.0M   0% /dev
tmpfs                           7.7G     0  7.7G   0% /dev/shm
tmpfs                           3.1G   65M  3.1G   3% /run
/dev/mapper/almalinux_211-root   81G   56G   26G  69% /
/dev/sda2                       960M  324M  637M  34% /boot
/dev/sda1                       599M  7.1M  592M   2% /boot/efi
/dev/mapper/almalinux_211-home   30G  4.5G   26G  16% /home

打完收工