扩充bhyve 虚拟Ubuntu系统的系统盘大小，比往常多用了一个partd命令

天马行空skywalk

766人浏览 · 2026-03-05 15:34:18

天马行空skywalk · 2026-03-05 15:34:18 发布

bhyve虚拟机的磁盘空间不够了，需要扩充一下。

bhyve的管理记录：https://skywalk.blog.csdn.net/article/details/157032015

以前扩充系统盘的记录：https://skywalk.blog.csdn.net/article/details/140570088

先到bhyve虚拟机的宿主机里，找到虚拟机磁盘文件/vm_images/ub19_ub22.img ，用truncate 调整磁盘文件大小。

先上结论

扩充bhyve 虚拟Ubuntu系统的系统盘大小，普通过程就是扩充逻辑卷和扩展文件系统。

如果空间没有分配，那么就用partd扩展逻辑卷对应的分区，然后再扩充逻辑卷和扩展文件系统。

常规操作

truncate 扩充虚拟机磁盘文件大小

找到虚拟Ubuntu系统的系统盘，在/vm_images ，文件是ub19_ub22.img

root@fb5:/vm_images # ls -la
total 12423627
drwxr-xr-x   3 root wheel           5 Feb  4 18:41 .
drwxr-xr-x  24 root wheel          29 Jan 25 16:17 ..
drwxr-xr-x   2 root wheel           2 Jan 20 12:27 .trash
-rw-r--r--   1 root wheel 19327352832 Mar  5 13:50 truenas_true13.img
-rw-r--r--   1 root wheel 17179869184 Mar  4 09:23 ub19_ub22.img

停止虚拟机，调整磁盘大小：

truncate -s +10G /vm_images/ub19_ub22.img

调整完毕：

root@fb5:/vm_images # ls -la
total 12423627
drwxr-xr-x   3 root wheel           5 Feb  4 18:41 .
drwxr-xr-x  24 root wheel          29 Jan 25 16:17 ..
drwxr-xr-x   2 root wheel           2 Jan 20 12:27 .trash
-rw-r--r--   1 root wheel 19327352832 Mar  5 13:50 truenas_true13.img
-rw-r--r--   1 root wheel 17179869184 Mar  4 09:23 ub19_ub22.img
root@fb5:/vm_images # truncate -s +10G /vm_images/ub19_ub22.img
root@fb5:/vm_images # ls -la
total 12424023
drwxr-xr-x   3 root wheel           5 Feb  4 18:41 .
drwxr-xr-x  24 root wheel          29 Jan 25 16:17 ..
drwxr-xr-x   2 root wheel           2 Jan 20 12:27 .trash
-rw-r--r--   1 root wheel 19327352832 Mar  5 13:55 truenas_true13.img
-rw-r--r--   1 root wheel 27917287424 Mar  5 13:55 ub19_ub22.img

启动Ubuntu，现在系统里面是这样的：

skywalk@ub19:/$ df -H
Filesystem                         Size  Used Avail Use% Mounted on
tmpfs                              206M  1.1M  205M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   11G   11G     0 100% /
tmpfs                              1.1G     0  1.1G   0% /dev/shm
tmpfs                              5.3M     0  5.3M   0% /run/lock
/dev/vda2                          1.9G  284M  1.5G  17% /boot
/dev/vda1                          799M  6.4M  793M   1% /boot/efi
tmpfs                              206M  4.1k  206M   1% /run/user/1000

扩充逻辑卷

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

可以看到磁盘从10G扩充到13G

sudo lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
  Size of logical volume ubuntu-vg/ubuntu-lv changed from 10.00 GiB (2560 extents) to 13.50 GiB (3456 extents).
  Logical volume ubuntu-vg/ubuntu-lv successfully resized.

扩展文件系统

sudo resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv

扩展完毕

sudo resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv
resize2fs 1.46.5 (30-Dec-2021)
Filesystem at /dev/mapper/ubuntu--vg-ubuntu--lv is mounted on /; on-line resizing required
old_desc_blocks = 2, new_desc_blocks = 2
The filesystem on /dev/mapper/ubuntu--vg-ubuntu--lv is now 3538944 (4k) blocks long.

skywalk@ub19:~/.cache$ df
Filesystem                        1K-blocks     Used Available Use% Mounted on
tmpfs                                200784     1032    199752   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv  13827112 10135468   2983204  78% /
tmpfs                               1003920        0   1003920   0% /dev/shm
tmpfs                                  5120        0      5120   0% /run/lock
/dev/vda2                           1768056   276444   1383480  17% /boot
/dev/vda1                            779768     6232    773536   1% /boot/efi
tmpfs                                200784        4    200780   1% /run/user/1000

但是我还有一些空间呢？我估计这是我以前分配给磁盘的，今天扩展上去了。

新分配的空间还没扩展。

lsblk命令查看当前磁盘和分区情况

lsblk
NAME                      MAJ:MIN RM  SIZE RO TYPE MOUNTPOINTS
loop0                       7:0    0 63.8M  1 loop /snap/core20/2686
loop1                       7:1    0 63.8M  1 loop /snap/core20/2717
loop2                       7:2    0 91.4M  1 loop /snap/lxd/36918
loop3                       7:3    0 38.8M  1 loop /snap/snapd/21759
loop4                       7:4    0 91.6M  1 loop /snap/lxd/37982
loop5                       7:5    0 48.1M  1 loop /snap/snapd/25935
vda                       252:0    0   26G  0 disk
├─vda1                    252:1    0  763M  0 part /boot/efi
├─vda2                    252:2    0  1.8G  0 part /boot
└─vda3                    252:3    0 13.5G  0 part
  └─ubuntu--vg-ubuntu--lv 253:0    0 13.5G  0 lvm  /

通过vgs查看未分配空间

sudo vgs

不过这台系统，刚开始看到了母系统的空间，后来再发同样的命令，看到的就是自己的了，看，还有13.5G空间没有分配。

skywalk@ub19:~/.cache$ sudo sudo vgs
Free
  ubuntu-vg   1   1   0 wz--n- 235.42g 135.42g  VG        #PV #LV #SN Attr   VSize   VFree
  ubuntu-vg   1   1   0 wz--n- 235.42g 135.42g  VG        #PV #LV #SN Attr   VSize   VFree
  ubuntu-vg   1   1   0 wz--n- 235.42g 135.42g  VG        #PV #LV #SN Attr   VSize  VFree
  ubuntu-vg   1   1   0 wz--n- 13.50g    0
skywalk@ub19:~/.cache$ sudo vgs
r   VSize   VFree
  ubuntu-vg   1   1   0 wz--n- 235.42g 135.42g  VG        #PV #LV #SN Attr   VSize   VFree
  ubuntu-vg   1   1   0 wz--n- 235.42g 135.42g  VG        #PV #LV #SN Attr   VSize  VFree
  ubuntu-vg   1   1   0 wz--n- 13.50g    0
skywalk@ub19:~/.cache$ vgs
  WARNING: Running as a non-root user. Functionality may be unavailable.
  /run/lock/lvm/P_global:aux: open failed: Permission denied
skywalk@ub19:~/.cache$ sudo vgs
  VG        #PV #LV #SN Attr   VSize  VFree
  ubuntu-vg   1   1   0 wz--n- 13.50g    0
skywalk@ub19:~/.cache$ sudo vgs
  VG        #PV #LV #SN Attr   VSize  VFree
  ubuntu-vg   1   1   0 wz--n- 13.50g    0

看错了，VFree是0，没有free空间了

lsblk看到还有空间，怎么分配出来？

vda 252:0 0 26G 0 disk
├─vda1 252:1 0 763M 0 part /boot/efi
├─vda2 252:2 0 1.8G 0 part /boot
└─vda3 252:3 0 13.5G 0 part
└─ubuntu--vg-ubuntu--lv 253:0 0 13.5G 0 lvm /

多一步partd扩展

用partd把前面lsblk看到的空间扩展到vda3分区。

用partd扩展vda3分区

 sudo parted /dev/vda
GNU Parted 3.4
Using /dev/vda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
Model: Virtio Block Device (virtblk)
Disk /dev/vda: 27.9GB
Sector size (logical/physical): 512B/131072B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system  Name  Flags
 1      1049kB  801MB   800MB   fat32              boot, esp
 2      801MB   2680MB  1879MB  ext4
 3      2680MB  17.2GB  14.5GB

(parted) resizepart 3 100%
(parted) print
Model: Virtio Block Device (virtblk)
Disk /dev/vda: 27.9GB
Sector size (logical/physical): 512B/131072B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system  Name  Flags
 1      1049kB  801MB   800MB   fat32              boot, esp
 2      801MB   2680MB  1879MB  ext4
 3      2680MB  27.9GB  25.2GB

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

扩展之后，使用pvresize更新 /dev/vda3

pvresize 更新 /dev/vda3

skywalk@ub19:~$ sudo pvresize /dev/vda3
  Physical volume "/dev/vda3" changed
  1 physical volume(s) resized or updated / 0 physical volume(s) not resized
skywalk@ub19:~$ lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
  WARNING: Running as a non-root user. Functionality may be unavailable.
  /dev/mapper/control: open failed: Permission denied
  Failure to communicate with kernel device-mapper driver.
  Incompatible libdevmapper 1.02.175 (2021-01-08) and kernel driver (unknown version).
  /run/lock/lvm/V_ubuntu-vg:aux: open failed: Permission denied
  Can't get lock for ubuntu-vg.
  Cannot process volume group ubuntu-vg
skywalk@ub19:~$ sudo lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
  Size of logical volume ubuntu-vg/ubuntu-lv changed from 13.50 GiB (3456 extents) to 23.50 GiB (6016 extents).
  Logical volume ubuntu-vg/ubuntu-lv successfully resized.

扩充逻辑卷和文件系统

skywalk@ub19:~$ sudo lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
  Size of logical volume ubuntu-vg/ubuntu-lv changed from 13.50 GiB (3456 extents) to 23.50 GiB (6016 extents).
  Logical volume ubuntu-vg/ubuntu-lv successfully resized.

sudo resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv
resize2fs 1.46.5 (30-Dec-2021)
Filesystem at /dev/mapper/ubuntu--vg-ubuntu--lv is mounted on /; on-line resizing required
old_desc_blocks = 2, new_desc_blocks = 3
The filesystem on /dev/mapper/ubuntu--vg-ubuntu--lv is now 6160384 (4k) blocks long.

skywalk@ub19:~$ df -H
Filesystem                         Size  Used Avail Use% Mounted on
tmpfs                              206M  1.1M  205M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   25G  9.8G   14G  42% /
tmpfs                              1.1G     0  1.1G   0% /dev/shm
tmpfs                              5.3M     0  5.3M   0% /run/lock
/dev/vda2                          1.9G  265M  1.5G  16% /boot
/dev/vda1                          799M  6.4M  793M   1% /boot/efi
tmpfs                              206M  4.1k  206M   1% /run/user/1000

搞定！

空间够了，可以装ollama啦！