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* test: Add memory/passt test casesStefano Brivio2022-11-042-0/+50
| | | | | | | | | | | | | | | | | | | | | | | | These show a summary of memory usage in kernel and userspace with different port forwarding configurations, details of userspace usage using 'nm' (passt only uses statically allocated memory), and details of kernel memory from slab reporting facilities. This adds a new test image, mbuto.mem.img, with harcoded IPv4 and IPv6 addresses and routes, and just the tools we need to start and stop passt, to report from /proc/slabinfo, /proc/meminfo, and to print and parse symbol sizes using nm(1). passt can't pivot_root() for sandboxing purposes on ramfs, so we need to create another filesystem and chroot into it, first. We don't want to use pane context functions, as we're checking memory usage for sockets: resort to screen-scraping. Configure a dummy interface to provide passt with an appearance of working IPv4 and IPv6 connectivity, contributed by David. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
* test/lib: Add "td" directive, handled by table_value()Stefano Brivio2022-11-042-0/+31
| | | | | | | 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>
* test/lib/perf_report: Use own flag to track initialisationStefano Brivio2022-11-041-3/+6
| | | | | | | | | 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>
* test/lib: Move screen-scraping setup and layout functions to _ugly filesStefano Brivio2022-11-044-92/+121
| | | | | | | | | | | 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>
* test: Add log file tests for pasta plus corresponding layout and setupStefano Brivio2022-10-263-1/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* test: Add rudimentary support to run selected tests onlyStefano Brivio2022-10-141-1/+1
| | | | | | | | | | | | | | | 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>
* test: Remove unneccessary pane naming from layout_two_guestsDavid Gibson2022-09-291-4/+0
| | | | | | | | | 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>
* test: Use --config-net for namespace setupDavid Gibson2022-09-291-14/+3
| | | | | | | | | | | | | | 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>
* test: More robust wait for pasta/passt to be readyDavid Gibson2022-09-291-5/+10
| | | | | | | | | | | | | 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>
* test: Add wait_for() shell helperDavid Gibson2022-09-292-3/+9
| | | | | | | | | | 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>
* test/lib: Don't try to write to perf.js when running demosStefano Brivio2022-09-241-0/+6
| | | | | | | ...it doesn't actually exist, and this error now causes the demo to stop. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/lib: Drop perf_report_append() from perf_reportStefano Brivio2022-09-241-6/+1
| | | | | | | 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>
* test/lib: Wait for DHCPv4 before starting DHCPv6 client in two_guests testStefano Brivio2022-09-231-0/+1
| | | | | | | | | | 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>
* test/lib: Wait for kernel to free up ports used by iperf3 before reusing themStefano Brivio2022-09-221-0/+2
| | | | | | | | 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>
* test/lib: Run also iperf3 clients in background, revert to time-based waitStefano Brivio2022-09-221-3/+6
| | | | | | | | | | | | | | | 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>
* test/perf: Disable periodic throughput reports to avoid vhost hangStefano Brivio2022-09-221-1/+1
| | | | | | | | | | | | | | | | | | 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>
* test/lib: Wait on iperf3 clients to be done, then send SIGINT to serversStefano Brivio2022-09-221-8/+8
| | | | | | | | | | | | | | | | 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>
* test/lib: Restore IFS while executing directives in def blocksStefano Brivio2022-09-221-1/+1
| | | | | | | 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>
* test: term: When checking if status line is a number, hide errorsStefano Brivio2022-09-141-1/+1
| | | | | | | | | | 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>
* test: Move perf.js report file to $LOGDIR/webDavid Gibson2022-09-131-1/+2
| | | | | | | | | 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>
* test: Move video processing files to $STATEBASEDavid Gibson2022-09-132-20/+25
| | | | | | | | | | | | | 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>
* test: Move pidfiles and nsholder sockets into state directoryDavid Gibson2022-09-131-33/+33
| | | | | | | 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>
* test: Store pcap files in $LOGDIR instead of /tmpDavid Gibson2022-09-131-8/+8
| | | | | | | 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>
* test: Move pause temporary file to state directoryDavid Gibson2022-09-131-2/+2
| | | | Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* test: Use paths in __STATEDIR__ instead of 'temp' and 'tempdir' directivesDavid Gibson2022-09-131-10/+0
| | | | | | | | | | | | 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>
* test: Move context temporary files to state dirDavid Gibson2022-09-131-29/+32
| | | | | | | | | 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>
* test: Move passt_test_log_pipe to state directoryDavid Gibson2022-09-132-14/+14
| | | | | | | 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>
* test: Create common state directories for temporary filesDavid Gibson2022-09-133-1/+7
| | | | | | | | | | | | | | | | | | 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>
* test: Remove unused variable FFMPEG_PID_FILEDavid Gibson2022-09-131-1/+0
| | | | | | FFPMPEG_PID_FILE is set (creating a temporary file), then never used. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* test: Use new-style command issue for passt_in_ns testsDavid Gibson2022-09-132-49/+34
| | | | | | | 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>
* test: Use context system for two_guests testsDavid Gibson2022-09-132-73/+57
| | | | | | | | 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>
* test: Use context system for guest commandsDavid Gibson2022-09-134-11/+43
| | | | | | | | | | | | | | | 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>
* test: Extend context system to run commands in namespace for pasta testsDavid Gibson2022-09-133-13/+29
| | | | | | | 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>
* test: Use new-style contexts for passt pane in the pasta and passt testsDavid Gibson2022-09-132-16/+11
| | | | | | | | | | 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>
* test: Issue host commands via context for most testsDavid Gibson2022-09-132-25/+42
| | | | | | | | | 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>
* test: Integration of old-style pane execution and new context executionDavid Gibson2022-09-132-81/+120
| | | | | | | | | | | | | | | | 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>
* test: Allow a tmux pane to watch commands executed in contextsDavid Gibson2022-09-131-0/+18
| | | | | | | | | | | | | | | | 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>
* test: Context execution helpersDavid Gibson2022-09-131-0/+80
| | | | | | | | | | | | | | | | | | 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: Rewrite test_iperf3David Gibson2022-09-071-41/+27
| | | | | | | | | | | | | | | 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>
* test: Parameterize run time for throughput performance testsDavid Gibson2022-09-071-4/+6
| | | | | | | | | | | | 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>
* test: Combine iperf3c and iperf3s into a single DSL commandDavid Gibson2022-09-071-47/+43
| | | | | | | | | | | | | | | | | 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>
* test: Kill qemu by pidfile rather than ^CDavid Gibson2022-08-201-8/+12
| | | | | | | | | | | | | 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>
* test: Use shutdown test for pastaDavid Gibson2022-08-201-3/+1
| | | | | | | | | 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>
* test: Rename slightly misleading "valgrind" testsDavid Gibson2022-08-201-2/+0
| | | | | | | | | | | | | | | | | | | 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>
* test: Split setup/teardown functions for build and distro testsDavid Gibson2022-08-201-0/+15
| | | | | | | | | | | | 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>
* test: Remove unused *_XTERM variablesDavid Gibson2022-08-201-4/+0
| | | | | | | 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>
* tests: Clean up better after iperf testsDavid Gibson2022-07-221-1/+1
| | | | | | | | | | | | | 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>
* tests: Use dhclient --no-pid for namespaces in two_guests testsDavid Gibson2022-07-221-4/+4
| | | | | | | | | | 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>
* tests: Remove unnecessary ^D in passt_in_ns teardownDavid Gibson2022-07-221-2/+0
| | | | | | | | | | | | | | | | | 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>
* tests: Fix detection of empty 'hout' responses in passt{,_in_ns} testsDavid Gibson2022-07-221-0/+14
| | | | | | | | | | | | | | 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>
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