[Labs-l] Spring Cleaning
Andrew Bogott
abogott at wikimedia.org
Sun Mar 6 20:18:21 UTC 2016
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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