This can be used for generic cell values with an arbitrary scale.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Instead of just disabling performance reports if running in demo
mode. This allows us to use table functions outside of performance
reports.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
I'm going to add yet another one of those, for which I have no quick
solution. It's a regression in some sense, but at least if we make
this regression more observable and defined, it should be easier to
find a comprehensive solution later, within this or another testing
framework.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
To test log files on a tmpfs mount, we need to unshare the mount
namespace, which means using a context for the passt pane is not
really practical at the moment, as we can't open a shell there, so
we would have to encapsulate all the commands under 'unshare -rUm',
plus the "inner" pasta command, running in turn a tcp_rr server.
It might be worth fixing this by e.g. detecting we are trying to
spawn an interactive shell and adding a special path in the context
setup with some form of stdin redirection -- I'm not sure it's doable
though.
For this reason, add a new layout, using a context only for the host
pane, while keeping the old command dispatch mechanism for the passt
pane.
We also need a new setup function that doesn't start pasta: we want
to start and restart it with different options.
Further, we need a 'pint' directive, to send an interrupt to the
passt pane: add that in lib/test.
All the tests before the one involving tmpfs and a detached mount
namespace were also tested with the context mechanism. To make an
eventual conversion easier, pass tcp_crr directly as a command on
pasta's command line where feasible.
While at it, fix the comment to the teardown_pasta() function.
The new test set can be semi-conveniently run as:
./run pasta_options/log_to_file
and it checks basic log creation, size of the log file after flooding
it with debug entries, rotations, and basic consistency after
rotations, on both an existing filesystem and a tmpfs, chosen as
it doesn't support collapsing data ranges via fallocate(), hence
triggering the fall-back mechanism for logging rotation.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
To keep this simple, only support tests that have corresponding setup
and teardown functions implied by their path. For example:
./run passt/ndp
will trigger the 'passt' setup and teardown functions.
This is not really elegant, but it looks robust, and while David is
considering proper alternatives, it should be quite useful.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
This loop goes through and gives a numeric label to each pane, even though
we name the panes properly shortly thereafter. Looks like a leftover from
some earlier version. Remove it.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
The setup functions for passt_in_ns and two_guests perform some fairly slow
dhclient calls to configure the network in the namespace before starting
the guest. This isn't really part of the tests, just necessary for the
operations later.
We can simplify and speed this up a bit by using pasta's '--config-net'
option to configure the networking for us. As a bonus this means we have
at least a minimal test of the --config-net option itself.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
When we start passt or pasta, it may take a short time to be ready to
handle packets, especially if running under valgrind. We have a
number of semi-arbitrary fixed sleeps to account for this.
We can do this more robustly by exploiting the fact that pasta/passt
doesn't write its pidfile until it's ready to go, so if we wait for
the pidfile to be created, we can proceed with confidence.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Add a shell helper function to wait for some command to succeed - typically
a test for something to be done by a background process. Use it in the
context code which waits for the guest to respond to ssh-over-vsock
connections.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
It's not used anymore. While at it, fix the function name in the
comment to perf_report_append_js().
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
I'm not sure why, but dhclient hangs otherwise. This reflects what we
do in the passt_in_ns setup steps.
Eventually, this whole block could go away if we let pasta configure
this network namespace with --config-net.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
If we start another server on the same port right away, we might fail
to bind the port. A small delay appears to be needed -- I'm not
entirely sure why at this point.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Unfortunately, this partially counters recent efforts by David to
speed up these tests, but it looks like iperf3 clients don't reliably
terminate, in some rare cases I couldn't isolate yet.
For the moment being, reintroduce the time-based wait approach, now
using the configurable test duration, and terminate the servers at
the end of it, in case they're stuck. There's no point in keeping
the 'sleep 2' later, so drop that, and while at it, make sure that
the stuck servers have time to flush the JSON output before we use
it.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
It appears that if we run throughput tests with one-second periodic
reports, the sending side of the vhost channel used for SSH-based
command dispatch occasionally stops working altogether. I haven't
investigated this further, all I see is that output is truncated
at some point, and doesn't resume.
If we use gzip compression (ssh -C) this happens less frequently,
but it still happens, seemingly indicating the issue is probably
related to vhost itself.
Disable periodic reports in iperf3 clients. The -i options were
actually redundant, so remove them from both test files as well as
from test_iperf3().
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
An iperf3 client might fail to send the control message indicating
the end of the test, if the kernel buffer doesn't accept it, and exit
without having sent it, as the control socket is non-blocking. Should
this happen, the server will just wait forever for this message,
instead of terminating.
Restore some of the behaviour that went away with the
"test: Rewrite test_iperf3" patch: instead of waiting on servers to
terminate, wait on the clients. When they are done, wait 2 seconds,
and then send SIGINT to the servers, which make them still write
out the JSON report before terminating.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
If we don't, guest command dispatch will fail altogether, given that
we use cat(1) on the enter file, which contains spaces.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
We use the [ "$x" -eq "$x" ] syntax to check if $x is a number. The
behaviour is clearly implied by POSIX, but some shells might actually
report the (intended) error, and dash floods script.log with
"Illegal number" error messages. Hide them.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
The tests generate a performance report in $BASEPATH/perf.js and
hooks/pre-push copies it to the website. To avoid cluttering the working
directory, instead put perf.js in $LOGDIR/web, since it's a test output
artefact. Update hooks/pre-push to copy from its new location.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The asciinema video handling creates a number of temporary files (.uncat,
.start, .stop) which currently go into the source tree. Put them in the
temporary state directory to avoid clutter.
The final processed output is now placed into test_logs/web/ along with the
corresponding .js file with links, since they're essentially test
artefacts. hooks/pre-push is updated to look for those files in the new
location when updating the web site.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Currently they go in the passt source tree with a fixed names, which means
their presence can mess with subsequent test runs.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The capture files are more or less a different form of log output from the
tests, so place them in $LOGDIR.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Instead of using the 'temp' and 'tempdir' DSL directives to create
temporary files, use fixed paths relative to __STATEDIR__. This has two
advantages:
1) The files are automatically cleaned up if the tests fail (and even if
that doesn't work they're easier to clean up manuall)
2) When debugging tests it's easier to figure out which of the temporary
files are relevant to whatever's going wrong
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Currently the context command dispatch subsystem creates a bunch of
temporary files in $LOGDIR, which is messy. Store them in $STATEDIR which
is for precisely this purpose. The logs from each context still go into
$LOGDIR.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
We use this fifo to send messages to the information pane. Put it in the
state directory so it doesn't need its own cleanup.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The test scripts create a bunch of temporary files to keep track of
internal state. Some are made in /tmp with individual mktemp calls, some
go in the passt source directory, and some go in $LOGDIR. This can
sometimes make it messy to clean up after failed test runs.
Start cleaning this up by creating a single "state" directory ($STATEBASE)
in /tmp for all the state or temporary files used by a single test run.
Clean it up automatically in cleanup() - except when DEBUG==1, because
those files can be useful for debugging test script failures.
We create subdirectories under $STATEBASE for each setup function, exposed
as $STATESETUP. We also create subdirectories for each test script and
expose those to the scripts as __STATEDIR__.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Put the pieces together to use the new style context based dispatch for
the passt_in_pasta tests.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Now that we have all the pieces we need for issuing commands both into
namespaces and into guests, we can use those to convert the two_guests to
using only the new style context command issue.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Extends the context system in the test scripts to allow executing commands
within a guest. Do this without requiring an existing network in the guest
by using socat to run ssh via a vsock connection.
We do need some additional "sleep"s in the tests, because the new
faster dispatch means that sometimes we attempt to connect before
socat has managed to listen.
For now, only use this for the plain "passt" tests. The "passt_in_ns" and
other tests have additional complications we still need to deal with.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Extend the context system to allow commands to be run in a namespace
created with unshare, and use it for the namespace used in the pasta tests.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Convert the pasta and passt tests to use new-style context execution
for the things that run in the "passt" frame. Don't touch the
passt_in_ns or two_guests tests yet, because they run passt inside a
namespace which introduces some additional complications we have yet
to handle.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Convert most of the tests to use the new-style system for issuing commands
for all host commands. We leave the distro tests for now: they use
the same pane for both host and guest commands which we'll need some more
things to deal with.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
We're creating a system for tests to more reliably execute commands in
various contexts (e.g. host, guest, namespace). That transition is going
to happen over a number of steps though, so in the meantime we need to deal
with both the old-style issuing of commands via typing into and screen
scraping tmux panels, and the new-style system for executing commands in
context.
Introduce some transitional helpers which will issue a command via context
if the requested context is initialized, but will otherwise fall back to
the old style tmux panel based method. Re-implement the various test DSL
commands in terms of these new helpers.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
We're moving to a new way of the tests dispatching commands to running in
contexts (host, guest, namespace, etc.). As we make this transition,
though, we still want the user to be able to watch the commands running
in a context, as they previously could from the commands issued in the
pane.
Add a helper to set up a pane to watch a context's log to allow this. In
some cases we currently issue commands from several different logical
contexts in the same pane, so allow a pane to watch several contexts at
once. Also use tail's --retry option to allow starting the watch before
we've initialized the context which will be useful in some cases.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
For the tests, we need to run commands in various contexts: in the host,
in a guest or in a namespace. Currently we do this by running each context
in a tmux pane, and using tmux commands to type the commands into the
relevant pane, then screen-scrape the output for the results if we need
them.
This is very fragile, because we have to make various assumptions to parse
the output. Those can break if a shell doesn't have the prompt we expect,
if the tmux pane is too small or in various other conditions.
This starts some library functions for a new "context" system, that
provides a common way to invoke commands in a given context, in a way that
properly preserves stdout, stderr and the process return code.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
test_iperf3() is a pretty inscrutable mess of nested background processes.
It has a number of ugly sleeps needed to wait for things to complete.
Rewrite it to be cleaner:
* Use the construct (a & b & wait) to run 'a' and 'b' in parallel, but
then wait for them both to complete before continuing
* This allows us to wait for both the server and client to finish, rather
than sleeping
* Use jq to do all the math we need to get the final result, rather than
jq followed by some complicated 'bc' mangling
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Currently all the throughput tests are run for 30s. This is reflected in
both the actual parameters given to the iperf commands, but also in the
matching sleeps in test_iperf3.
Allow this to be adjusted more easily with a new parameter to test_iperf3.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[sbrivio: Reflect new parameter in comment to test_iperf3()]
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
These two commands in the DSL to run an iperf client and server are always
used together, and some of the parameters must match between them. The
iperf3s must also be run more or less immediately after iperf3c, since
iperf3c will run a client in the background after a sleep and requires a
server to be running before it will work.
A bunch of things can be made cleaner if we make a single DSL command that
runs both sides of the test. For now make the combined command work
exactly like the two commands together did, warts and all.
This does lose the ability for the DSL scripts to give additional options
to the iperf3 server, but we weren't using that anyway.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Currently in at least some of the testcases we kill qemu processes we're
done with by issuing a Control-C to the tmux panel it's running in. That
makes things harder as we try to move towards allowing "headless" testing
without tmux.
So, instead always use an explicit kill on a pid derived from a pidfile
for killing qemu. Note that we don't need to remove the pidfiles
afterwards, because qemu does that itself when terminated.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
For the passt and passt_in_ns tests we have a "shutdown" testcase that
checks for any errors from the passt process we were using (including
valgrind warnings). Do the same for pasta tests, so that we catch any
error codes from the pasta process.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The "valgrind" test cases are designed to pick up errors reported when
passt is running under valgrind. But what it actually does is just kill
the passt process, then see if it had a non-zero exit code. That means it
will equally well pick up any other problems which caused passt to exit
with an error status: either something detected within passt or as a result
of passt being killed by an unexpected signal.
The fact that the "valgrind" test is actually responsible for shutting down
the passt process is non-obvious and can lead to problems when selectively
running tests during debugging.
Rename the "valgrind" tests to "shutdown" tests and run it regardless of
whether we're using valgrind or not. This allows us to remove an ugly
speacial case in the passt_in_ns teardown code.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Currently the build tests and distro tests share a common setup function.
That works for now, but changes we want to make will mean they need
slightly different setup, so split the setup functions in preparation.
Currently, neither build nor distro tests have any teardown function.
Again, future changes are going to mean we need to do some teardown, so
create some empty for now teardown functions in preparation.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The DEMO_XTERM and CI_XTERM variables defined in test/lib/term aren't used
anywhere. Remove them.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The iperf based test commands create a bunch of .bw and .pid files for
each iperf client and server. The server side .bw files are cleaned
up afterwards, but the pid files are not, and none of the client side
files are cleaned up. The latter doesn't really matter when the
client is run on ephemeral guests, but sometimes we run it in a
namespace that shares the filesystem with the host.
Clean up all of these files after the tests.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Before starting the guests, these tests configure addresses in a pasta
namespace using dhclient. However, because it's a user namespace, it's
not running as "real" root and can't write to the dhclient pid file.
This doesn't stop it working, but causes an ugly error message which we
can avoid by using the --no-pid option.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
teardown_passt_in_ns() sends a ^D to the NS pane, which appears to be
intended to terminate the nsenter running there, leaving the namespace.
However, we've also sent a ^D to the PASST pane which will exit the pasta
instance which created the namespace. With the namespace destroyed the
nsenter in the NS pane will be killed, so it does not need to be exited
explicitly.
In fact sending the extra ^D can be harmful, since it will exit the shell
in which the nsenter was run, causing the whole pane to be closed. That
can then mean that the "pane_wait NS" hangs indefinitely. I believe this
will sometimes work, because there's a race between the various options
here, but it should be more reliable without the extra ^D.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The dhcp/passt and dhcp/passt_in_ns tests at least, and maybe others
use 'hout' commands that need to be able to detect empty output.
However, we don't set PS1, which means the screen-scraping logic which
detects this may not be reliable. In addition, if the host is using a
recent bash, it will have bracketed paste mode enabled which will also
add escape codes which will mess up the empty output detection.
Set the prompt and disable bracketed paste mode from the passt and
passt_in_ns setups to avoid these problems.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Similar case as the one fixed by David's patch "tests: Remove
unnecessary ^D in passt_in_ns teardown": we happen to pseudo-randomly
close panes by unnecessarily exiting the parent shells there, and
subsequent pane_wait directives hang.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
