On 04/26/2010 01:04 PM, Jason Wang wrote:
> This patch tries to get the content of guest serial and log it into
> the debug directoy of the testcase through a dedicated thread which is
> created in the preprocessing and ended in the postprocessing. The
> params of serial_mode must be set to "dump" in order to make use of
> this feature.
>
> Signed-off-by: Jason Wang <[email protected]>
> ---
> client/tests/kvm/kvm_preprocessing.py | 59
> +++++++++++++++++++++++++++++++-
> client/tests/kvm/tests_base.cfg.sample | 1 +
> 2 files changed, 59 insertions(+), 1 deletions(-)
>
> diff --git a/client/tests/kvm/kvm_preprocessing.py
> b/client/tests/kvm/kvm_preprocessing.py
> index 4b9290c..50d0e35 100644
> --- a/client/tests/kvm/kvm_preprocessing.py
> +++ b/client/tests/kvm/kvm_preprocessing.py
> @@ -1,4 +1,5 @@
> import sys, os, time, commands, re, logging, signal, glob, threading, shutil
> +import socket, select
> from autotest_lib.client.bin import test, utils
> from autotest_lib.client.common_lib import error
> import kvm_vm, kvm_utils, kvm_subprocess, ppm_utils
> @@ -13,7 +14,8 @@ except ImportError:
>
> _screendump_thread = None
> _screendump_thread_termination_event = None
> -
> +_serialdump_thread = None
> +_serialdump_thread_termination_event = None
>
> def preprocess_image(test, params):
> """
> @@ -267,6 +269,16 @@ def preprocess(test, params, env):
> args=(test, params, env))
> _screendump_thread.start()
>
> + # Start the serial dump thread
> + if params.get("serial_mode") == "dump":
> + logging.debug("Starting serialdump thread")
> + global _serialdump_thread, _serialdump_thread_termination_event
> + _serialdump_thread_termination_event = threading.Event()
> + _serialdump_thread = threading.Thread(target=_dump_serial_console,
> + args=(test, params, env))
> + _serialdump_thread.start()
> +
> +
>
> def postprocess(test, params, env):
> """
> @@ -286,6 +298,13 @@ def postprocess(test, params, env):
> _screendump_thread_termination_event.set()
> _screendump_thread.join(10)
>
> + # Terminate the serialdump thread
> + global _serialdump_thread, _serialdump_thread_termination_event
> + if _serialdump_thread:
> + logging.debug("Terminating serialdump thread...")
> + _serialdump_thread_termination_event.set()
> + _serialdump_thread.join(10)
> +
> # Warn about corrupt PPM files
> for f in glob.glob(os.path.join(test.debugdir, "*.ppm")):
> if not ppm_utils.image_verify_ppm_file(f):
> @@ -450,3 +469,41 @@ def _take_screendumps(test, params, env):
> if _screendump_thread_termination_event.isSet():
> break
> _screendump_thread_termination_event.wait(delay)
> +
> +def _dump_serial_console(test, params, env):
> + global _serialdump_thread_termination_event
> + rs = []
> + files = {}
> +
> + while True:
> + for vm in kvm_utils.env_get_all_vms(env):
> + if not files.has_key(vm):
You should probably add "and not vm.is_dead()" to this condition.
Otherwise we'll get lots of "could not connect to serial socket"
messages for dead VMs.
Style note: AFAIK in the Autotest project the form "if not vm in files"
is preferred.
> + try:
> + serial_socket = socket.socket(socket.AF_UNIX,
> + socket.SOCK_STREAM)
> + serial_socket.setblocking(False)
> + serial_socket.connect(vm.serial_file_name)
> + except:
> + logging.debug("Could not connect to serial socket for
> %s" %
> + vm.name)
> + continue
> + rs.append(serial_socket)
> + serial_dump_filename = os.path.join(test.debugdir,
> + "serial-%s" % vm.name)
> + files[vm] = [serial_socket, file(serial_dump_filename, "a+")]
> +
> + r, w, x = select.select(rs, [], [], 0.5)
> + for vm in files.keys():
> + [s ,d] = files[vm]
For consistency, please consider changing this list to a tuple, i.e.
s, d = files[vm] or (s, d) = files[vm].
> + if s in r:
> + data = s.recv(16384)
> + if len(data) == 0:
Style note: AFAIK the preferred form is "if not data".
Sorry for the petty comments. Overall the patch looks good.
> + rs.remove(s)
> + files.pop(vm)
> + else:
> + d.write(data)
> +
> + if _serialdump_thread_termination_event.isSet():
> + break
> +
> +
> diff --git a/client/tests/kvm/tests_base.cfg.sample
> b/client/tests/kvm/tests_base.cfg.sample
> index 9f82ffb..169a69e 100644
> --- a/client/tests/kvm/tests_base.cfg.sample
> +++ b/client/tests/kvm/tests_base.cfg.sample
> @@ -13,6 +13,7 @@ start_vm = yes
> kill_vm = no
> kill_vm_gracefully = yes
> kill_unresponsive_vms = yes
> +serial_mode = dump
>
> # Screendump specific stuff
> convert_ppm_files_to_png_on_error = yes
>
> --
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