Re: [Xen-users] real HDD usage of XEN images

[Kai Schaetzl <maillists@xxxxxxxxxxxxx>]

Heiko wrote on Thu, 15 Jan 2009 12:37:58 +0100:

> Are the XEN images pre allocated or does XEN only use that space that
> really is used by the VM inside the image?

If I remember correctly virt-install does *not* create sparse files. This 
is a not a matter of Xen, but simply how the image file gets created. You 
can create it before use by virt-install for instance.

> I know have the Problem that an "du -h" inside my /VM folder gives me
> nearly a  higher number that the harddisk has on size.

well, du is missing from your quotes now ;-)

> /dev/sda3             106G  102G     0 100% /

your root system is full. Independant of the question whether your VMs are 
using sparse files or not ;-)

> [root@x1blade3:~]# ls -lah /VM
> total 101G

ls gives you the amount that is reserved for the file in the directory 
list, it doesn't give you the real size of the file. The real size is 
shown by du -s. Run a "du -s *" in that folder and it will list real sizes 
for each file and folder in there (or a "du -s /VM" to get the complete 
value for that directory).

Kai

-- 
Kai Schätzl, Berlin, Germany
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