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iTeY
Asked: 2021-08-12 00:46:04 +0800 CST

无法使用 LVM 或 resize2fs 将 oVirt VM 磁盘扩展到新大小

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我有一个带有 VM 的 oVirt 服务器，该 VM 是使用 20GB 磁盘创建的，但很快就用完了空间，所以我又添加了 20GB 空间，现在我正在尝试扩展磁盘。

我以前在旧虚拟机上做过一次，然后我运行了以下命令：

$ sudo lvm
lvm> lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
  Size of logical volume ubuntu-vg/ubuntu-lv changed from 4.00 GiB (1024 extents) to <49.00 GiB (12543 extents).
  Logical volume ubuntu-vg/ubuntu-lv successfully resized.
lvm> exit
  Exiting.



$ sudo lvm
lvm> lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
  Size of logical volume ubuntu-vg/ubuntu-lv changed from 4.00 GiB (1024 extents) to <49.00 GiB (12543 extents).
  Logical volume ubuntu-vg/ubuntu-lv successfully resized.
lvm> exit
  Exiting.
$ sudo resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv
resize2fs 1.45.5 (07-Jan-2020)
Filesystem at /dev/mapper/ubuntu--vg-ubuntu--lv is mounted on /; on-line resizing required old_desc_blocks = 1, new_desc_blocks = 7
The filesystem on /dev/mapper/ubuntu--vg-ubuntu--lv is now 12844032 (4k) blocks long.
$ df -h
Filesystem                         Size  Used Avail Use% Mounted on
udev                               949M     0  949M   0% /dev
tmpfs                              199M  1.2M  198M   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv   49G  3.8G   43G   9% /
tmpfs                              993M     0  993M   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
tmpfs                              993M     0  993M   0% /sys/fs/cgroup
/dev/sda2                          976M  107M  803M  12% /boot
/dev/loop0                          28M   28M     0 100% /snap/snapd/7264
/dev/loop1                          55M   55M     0 100% /snap/core18/1705
/dev/loop2                          69M   69M     0 100% /snap/lxd/14804
/dev/loop3                          33M   33M     0 100% /snap/snapd/12159
/dev/loop4                          56M   56M     0 100% /snap/core18/2074
/dev/loop5                          62M   62M     0 100% /snap/core20/1026
/dev/loop6                          67M   67M     0 100% /snap/lxd/20840
tmpfs                              199M     0  199M   0% /run/user/1000

这扩展了磁盘，但现在由于某种原因在我的新 VM 上这些命令不起作用，我得到以下输出：

$ sudo lvm
lvm> lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv
  New size (4863 extents) matches existing size (4863 extents).
lvm>



$ sudo resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv
resize2fs 1.45.5 (07-Jan-2020)
The filesystem is already 4979712 (4k) blocks long.  Nothing to do!

调查fdisk -l我有以下内容：

Disk /dev/loop0: 54.97 MiB, 57614336 bytes, 112528 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


Disk /dev/loop1: 55.45 MiB, 58134528 bytes, 113544 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


Disk /dev/loop2: 61.79 MiB, 64770048 bytes, 126504 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


Disk /dev/loop3: 68.26 MiB, 71573504 bytes, 139792 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


Disk /dev/loop4: 68.17 MiB, 71475200 bytes, 139600 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


Disk /dev/loop5: 27.9 MiB, 28405760 bytes, 55480 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


Disk /dev/loop6: 32.3 MiB, 33865728 bytes, 66144 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


Disk /dev/sda: 40 GiB, 42949672960 bytes, 83886080 sectors
Disk model: QEMU HARDDISK
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: EFA99D35-85DD-4D0D-A4DE-19514BF6AE89

Device       Start      End  Sectors Size Type
/dev/sda1     2048     4095     2048   1M BIOS boot
/dev/sda2     4096  2101247  2097152   1G Linux filesystem
/dev/sda3  2101248 41940991 39839744  19G Linux filesystem


Disk /dev/mapper/ubuntu--vg-ubuntu--lv: 18.102 GiB, 20396900352 bytes, 39837696                                                                                                              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
ubuntu kvm-virtualization ovirt

1 个回答

  1. Best Answer

    您还没有扩展磁盘分区。这是第一步，出于某种原因，您正试图跳过它（以及另一个强制性步骤）。

    Device       Start      End  Sectors Size Type
/dev/sda3  2101248 41940991 39839744  19G Linux filesystem

    使用该工具安全地growpart扩展分区。请记住，它将块设备和分区号作为单独的参数。

    sudo growpart /dev/sda 3

    如果您还没有安装它，请安装它。

    完成后，您可以继续调整 PV 的大小，然后调整 LV。

    sudo pvresize /dev/sda3

... the rest of what you were trying to do.
    • 0

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