[ovirt-users] VM File System expansion

Punit Dambiwal hypunit at gmail.com
Thu Sep 4 01:51:53 UTC 2014


Hi,

I read this article and found that we can expand the VM disk online but it
doesn't expand the filesystem of the VM.....

I tried the following but still it didn't work..all the below commands
failed on the host..

I am using :-
1. Ovirt 3.4.3
2. Glusterfs 3.5

https://inthecloud.readthedocs.org/zh_CN/latest/index.html it's
in Chinese but can translate here :-
http://translate.google.com.hk/translate?hl=en&sl=zh-CN&u=https://inthecloud.readthedocs.org/&prev=/search%3Fq%3Dhttps://inthecloud.readthedocs.org%26biw%3D1440%26bih%3D789

Virtual Machine File System expansion
<https://translate.googleusercontent.com/translate_c?depth=1&hl=en&prev=/search%3Fq%3Dhttps://inthecloud.readthedocs.org%26biw%3D1440%26bih%3D789&rurl=translate.google.com.hk&sl=zh-CN&u=https://inthecloud.readthedocs.org/zh_CN/latest/posts/ch03.html&usg=ALkJrhiaix6TlqJPXyUpzoTY1kZriRpW3Q#id11>

 oVirt 3.4 disks can be online expansion, but for the disk within a file
system requires a separate support for Linux and Windows lists commonly
used method in this expansion.

 *Linux file system expansion (libguestfs)*

 For details, please refer to libguestfs site
<https://translate.googleusercontent.com/translate_c?depth=1&hl=en&prev=/search%3Fq%3Dhttps://inthecloud.readthedocs.org%26biw%3D1440%26bih%3D789&rurl=translate.google.com.hk&sl=zh-CN&u=http://libguestfs.org/&usg=ALkJrhhw7qzZZdvvvGYkIoGrDbC9DiD_qw>
.

   1.  View disk

  # Virt-filesystem --all --long -h -a hda.img


   1.  Expansion disk copy to be created, while the expansion of 10G
   (Assuming the original disk size is 10G)

 For RAW format:

  # Truncate -r hda.img hda-new.img # Truncate -s + 10G hda-new.img

 For QCOW2 and other compressed formats:

  # Qemu-img create -f qcow2 -o preallocation = metadata hda-new.img 20G


   1.  Extended partition size

 Ordinary extended partition, / boot partition expansion 200M, all the rest
to the / partition:

  # Virt-resize --resize / dev / sda1 = + 200M --expand / dev / sda2
hda.img hda-new.img

 LVM partition expansion, expansion lv_root logical volume:

  # Virt-resize --expand / dev / sda2 --LV-expand / dev / vg_livecd /
lv_root hda.qcow2 hda-new.qcow2


Thanks,

Punit
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