Hello Mike,
On Thu, 13 Dec 2018 at 21:51, Mike Keehan <m...@keehan.net> wrote:
> On Thu, 13 Dec 2018 20:31:29 +0100
> 799 <one7tw...@gmail.com> wrote:
>
> > [...]
> > But when I bring both peaces together I only get one result back, not
> > the result for all AppVMs
> > [...]
>
> I can't figure out why the code above only returns the first VM's
> result, but the following code works for me :-
> for i in `qvm-ls --running -O name --raw-data|grep -v dom0`;
> do
> echo $i = `qvm-run --pass-io $i "free"| tail -n +3 | gawk '{print
> $3 }'`;
> done
>
with the help from you I was able to write a small script which will
generate a notification pop up if swap usage in an appvm reaches a
threshold (maxswap).
This script could then be run via cron or maybe watch.
--- 8< --- --- ---
#!/bin/bash
# name : qvm-show-swap.sh
# version: 0.1
# date : 15.12.2018
# author : one7two99 + help of Qubes OS mailinglist ;-)
# define allowed maximum swap usage in Kb
# if more swap space is used in an AppVM a warning notification will pop-up
maxswap=1024
# get a list of all running AppVms (except dom0)
for i in `qvm-ls --running -O name --raw-data | grep -v dom0`;
do
# get swap usage in the AppVM
freeswap=`qvm-run --pass-io $i "free" | tail -n+3 | gawk '{print $3}'`;
# convert swap usage from Kb to Mb
swapsize=$(expr $freeswap / 1024);
# Check if swap usage is > than maxswap
if [ "$freeswap" -gt "$maxswap" ]; then
# create a PopUp-notification
notify-send --urgency normal --icon dialog-warning --expire-time=5000
"$i" ".. is using $swapsize Mb swap";
fi;
done
--- 8< --- --- ---
For a simple test you could run this script every 5 min in dom0 via:
watch -n 300 ./qvm-show-swap.sh
or you setup something like cron in dom0 etc.
Let me know if you think there is a better approach.
- O
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