[Labs-l] Spring Cleaning

[Andrew Bogott]

On 3/6/16 8:02 AM, Merlijn van Deen (valhallasw) wrote:
> On 5 March 2016 at 20:18, Mr. Maximilian Doerr 
> <maximilian.doerr at gmail.com <mailto:maximilian.doerr at gmail.com>> wrote:
>
>     38G  523df61c-07f0-41ba-924d-e2b8e474b4d7  tools-exec-cyberbot
>      tools marc
>
>     What on Earth could Cyberbot be generating? Nothing in its folder
>     amounts to that size!!!!
>
>
> The storage is 'flexible', but it doesn't shrink. This means that if 
> you have a 80GB disk, with only 20GB filled, it will use 20GB on the 
> VM server. If you then fill the disk, it will use 80GB on the VM 
> server. However, if you now delete 60GB of data, it will /still/ use 
> 80GB on the VM server. Andrew pointed out in an earlier email that 
> it's possible to reclaim the space by shutting down the instance and 
> compressing it, or by creating a new instance.
I ran a test of this on Friday and the recompressing process (qemu-img 
convert -O qcow2) didn't actually save me much space -- the instance had 
about 50 Gb of 'empty' space in it but recomressing only recaptured 
about 2Gb.  I'm not sure if there's a better process than the one I'm 
using;  it is nonetheless useful to delete unneeded files, though, since 
it prevents future footprint growth.
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