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Re: [virt-tools-list] virt-manager not really allocating disk space



'Allocate entire disk now' is working correctly.
But if I need to add another volume to VM I use -> Connection Details -> Storage -> New Volume
So what's  the reason if I fill up
Max Capacity: 10240  MB
Allocation: 10240 MB ---> description  (Allocation: Actual size allocated to volume at this time)

As I wrote before file isn't really allocated.
If I leave there default 0 than your answer is correct from my point of view.




On 02/19/2013 06:26 PM, Michal Privoznik wrote:
On 19.02.2013 13:19, Peter Velas wrote:
Hello guys,


My environment
Fedora 18 with kernel   3.7.8-202.fc18.x86_64
Virtual Machine Manager 0.9.4

when creating New Storage Volume in virt-manager
newVM.img with qcow2 format  for example with following settings:


Max Capacity: 10240  MB
Allocation: 10240 MB

But then if I check the file its still small
  ls -lha newVM.img
-rw------- 1 root root 193K Feb 19 12:59 newVM.img

So I am not sure if its bug or this feature isn't implemented yet.
qemu-img create / convert preallocation is working fine.


In fact, this is feature. QCOW images are dynamically allocated as the
amount of written data grows. If you don't want this behavior, you can
check the 'Allocate entire disk now' checkbox in the 4th step when
creating a new domain. However, be aware that allocating huge files may
takes some time. But on the other hand, guest IOs are not delayed as if
they were in case of self allocating QCOW.

BTW: you can always check QCOW disk size via:

   qemu-img info /some/path

Michal



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