[libvirt] [PATCH 4/4] virnetdevbandwidthtest: Introduce testVirNetDevBandwidthSet
eblake at redhat.com
Fri Jan 24 22:12:41 UTC 2014
On 01/23/2014 06:44 AM, Michal Privoznik wrote:
> The test tries to set some QoS limits and check if the commands
> that are actually executed are the expected ones.
> Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
> tests/virnetdevbandwidthtest.c | 70 ++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 70 insertions(+)
Hmm - the idea of making virCommand have a dry-run mode might be useful
in other testsuites. Rather than mock things up with LD_PRELOAD, would
it be worth adding an internal entry point to vircommand.c where we can
pass in a file name from the testsuite code; if that file name is set,
we dump the command name to the file instead of executing the command.
While LD_PRELOAD hacks are nice, it would be even nicer to have the
reusable testing framework not depend on a Linux-only solution. That is
more against 3/4, although if you do go with that approach, this patch
might be impacted on calling into the internal hook to register the
dry-run filename to write into.
> + DO_TEST_SET("<bandwidth>"
> + " <inbound average='1' peak='2' floor='3' burst='4'/>"
> + " <outbound average='5' peak='6' burst='7'/>"
> + "</bandwidth>",
> + "/sbin/tc qdisc del dev eth0 root\n"
> + "/sbin/tc qdisc del dev eth0 ingress\n"
> + "/sbin/tc qdisc add dev eth0 root handle 1: htb default 1\n"
I'm finding it a bit hard to visually see the argument separation. I
would have written it:
" <inbound .../>"
" <outbound .../>"
("/sbin/tc qdisc del dev eth0 root\n"
to draw a bit more of a visual clue where the string concats are divided
into separate arguments. But that's cosmetic.
ACK to this patch, once we figure out whether patch 3 is the ideal
solution to the virCommand dry-run problem.
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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