How much swap do you have?

> On Oct 16, 2014, at 9:41 PM, Mark Phillips <[email protected]> wrote:
> 
> I signed up for a free VPS on Ohava - 20GB is what is advertised. When I 
> logged into the system, df -h showed this:
> 
> Filesystem                   Size  Used Avail Use% Mounted on
> /dev/mapper/ubuntu--vg-root  6.6G  1.8G  4.6G  28% /
> none                         4.0K     0  4.0K   0% /sys/fs/cgroup
> udev                         235M  4.0K  235M   1% /dev
> tmpfs                         50M  368K   49M   1% /run
> none                         5.0M     0  5.0M   0% /run/lock
> none                         246M     0  246M   0% /run/shm
> none                         100M     0  100M   0% /run/user
> /dev/vda1                    236M   68M  156M  31% /boot
> 
> I queried to the support group, so they sent me instructions to add 10 more 
> GB. 
> 
> df now shows:
> 
> Filesystem                   Size  Used Avail Use% Mounted on
> /dev/mapper/ubuntu--vg-root   17G  1.8G   14G  12% /
> none                         4.0K     0  4.0K   0% /sys/fs/cgroup
> udev                         235M  4.0K  235M   1% /dev
> tmpfs                         50M  368K   49M   1% /run
> none                         5.0M     0  5.0M   0% /run/lock
> none                         246M     0  246M   0% /run/shm
> none                         100M     0  100M   0% /run/user
> /dev/vda1                    236M   68M  156M  31% /boot
> 
> The support groups said:
> Our apologies on the confusion. This is a current bug in the machines being 
> spun up, but we definitely offer (and want to help you get) the full amount 
> of space. Every instance gets 20GB partitioned to them. There is some 
> overhead in some of the other partitions of disk space so / won't ever show 
> the full 20GB, as small parts of the 20GBs are allocated elsewhere. 
> 
> The instructions sent to you are for extending the / partition an additional 
> 10GB. Since there was already some amount of storage there, the result after 
> completing the instructions (and the correction to the error that we made 
> when we originally sent you instructions on expanding the lvm volume..."sudo 
> lvextend -L+10G /dev/ubuntu-vg/root") should get you as close as possible to 
> 20GB (~18.75GB) on /root while allowing for the overhead. 
> 
> I get the calculation of disk size issue, so a 20 GB drive is really only 
> 18.63 GB. But shouldn't df show 18.63 GB and not 17 GB? Is the discrepancy 
> (1.63 GB or 8.75% of the drive) due to formatting the disk and adding Ubuntu 
> server?
> 
> Thanks,
> 
> Mark
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