231 lines
9.1 KiB
Python
231 lines
9.1 KiB
Python
import os, time, logging, shutil
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from autotest_lib.client.common_lib import global_config
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from autotest_lib.client.common_lib.cros.graphite import autotest_stats
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from autotest_lib.client.cros import constants
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from autotest_lib.server import utils
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# import any site hooks for the crashdump and crashinfo collection
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get_site_crashdumps = utils.import_site_function(
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__file__, "autotest_lib.server.site_crashcollect", "get_site_crashdumps",
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lambda host, test_start_time: None)
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get_site_crashinfo = utils.import_site_function(
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__file__, "autotest_lib.server.site_crashcollect", "get_site_crashinfo",
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lambda host, test_start_time: None)
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_timer = autotest_stats.Timer('crash_collection')
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@_timer.decorate
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def get_crashdumps(host, test_start_time):
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get_site_crashdumps(host, test_start_time)
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@_timer.decorate
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def get_crashinfo(host, test_start_time):
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logging.info("Collecting crash information...")
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# get_crashdumps collects orphaned crashdumps and symbolicates all
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# collected crashdumps. Symbolicating could happen
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# during a postjob task as well, at which time some crashdumps could have
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# already been pulled back from machine. So it doesn't necessarily need
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# to wait for the machine to come up.
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get_crashdumps(host, test_start_time)
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if wait_for_machine_to_recover(host):
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# run any site-specific collection
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get_site_crashinfo(host, test_start_time)
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crashinfo_dir = get_crashinfo_dir(host, 'crashinfo')
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collect_messages(host)
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collect_command(host, "dmesg", os.path.join(crashinfo_dir, "dmesg"))
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collect_uncollected_logs(host)
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# Collect everything in /var/log.
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log_path = os.path.join(crashinfo_dir, 'var')
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os.makedirs(log_path)
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collect_log_file(host, constants.LOG_DIR, log_path)
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# Collect console-ramoops
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log_path = os.path.join(
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crashinfo_dir, os.path.basename(constants.LOG_CONSOLE_RAMOOPS))
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collect_log_file(host, constants.LOG_CONSOLE_RAMOOPS, log_path)
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# Collect i915_error_state, only available on intel systems.
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# i915 contains the Intel graphics state. It might contain useful data
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# when a DUT hangs, times out or crashes.
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log_path = os.path.join(
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crashinfo_dir, os.path.basename(constants.LOG_I915_ERROR_STATE))
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collect_log_file(host, constants.LOG_I915_ERROR_STATE,
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log_path, use_tmp=True)
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# Load default for number of hours to wait before giving up on crash collection.
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HOURS_TO_WAIT = global_config.global_config.get_config_value(
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'SERVER', 'crash_collection_hours_to_wait', type=float, default=4.0)
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def wait_for_machine_to_recover(host, hours_to_wait=HOURS_TO_WAIT):
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"""Wait for a machine (possibly down) to become accessible again.
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@param host: A RemoteHost instance to wait on
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@param hours_to_wait: Number of hours to wait before giving up
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@returns: True if the machine comes back up, False otherwise
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"""
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current_time = time.strftime("%b %d %H:%M:%S", time.localtime())
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if host.is_up():
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logging.info("%s already up, collecting crash info", host.hostname)
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return True
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logging.info("Waiting %s hours for %s to come up (%s)",
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hours_to_wait, host.hostname, current_time)
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if not host.wait_up(timeout=hours_to_wait * 3600):
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autotest_stats.Counter('collect_crashinfo_timeout').increment()
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logging.warning("%s down, unable to collect crash info",
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host.hostname)
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return False
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else:
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logging.info("%s is back up, collecting crash info", host.hostname)
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return True
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def get_crashinfo_dir(host, dir_prefix):
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"""Find and if necessary create a directory to store crashinfo in.
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@param host: The RemoteHost object that crashinfo will be collected from
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@param dir_prefix: Prefix of directory name.
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@returns: The path to an existing directory for writing crashinfo into
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"""
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host_resultdir = getattr(getattr(host, "job", None), "resultdir", None)
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if host_resultdir:
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infodir = host_resultdir
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else:
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infodir = os.path.abspath(os.getcwd())
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infodir = os.path.join(infodir, "%s.%s" % (dir_prefix, host.hostname))
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if not os.path.exists(infodir):
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os.mkdir(infodir)
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return infodir
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def collect_log_file(host, log_path, dest_path, use_tmp=False):
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"""Collects a log file from the remote machine.
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Log files are collected from the remote machine and written into the
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destination path. If dest_path is a directory, the log file will be named
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using the basename of the remote log path.
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@param host: The RemoteHost to collect logs from
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@param log_path: The remote path to collect the log file from
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@param dest_path: A path (file or directory) to write the copies logs into
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@param use_tmp: If True, will first copy the logs to a temporary directory
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on the host and download logs from there.
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"""
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logging.info('Collecting %s...', log_path)
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try:
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source_path = log_path
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if use_tmp:
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devnull = open('/dev/null', 'w')
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tmpdir = host.run('mktemp -d', stdout_tee=devnull).stdout.strip()
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host.run('cp -rp %s %s' % (log_path, tmpdir))
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source_path = os.path.join(tmpdir, os.path.basename(log_path))
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host.get_file(source_path, dest_path, preserve_perm=False)
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if use_tmp:
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host.run('rm -rf %s' % tmpdir)
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except Exception, e:
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logging.warning('Collection of %s failed: %s', log_path, e)
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def collect_command(host, command, dest_path):
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"""Collects the result of a command on the remote machine.
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The standard output of the command will be collected and written into the
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desitionation path. The destination path is assumed to be filename and
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not a directory.
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@param host: The RemoteHost to collect from
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@param command: A shell command to run on the remote machine and capture
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the output from.
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@param dest_path: A file path to write the results of the log into
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"""
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logging.info("Collecting '%s' ...", command)
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devnull = open("/dev/null", "w")
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try:
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try:
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result = host.run(command, stdout_tee=devnull).stdout
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utils.open_write_close(dest_path, result)
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except Exception, e:
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logging.warning("Collection of '%s' failed:\n%s", command, e)
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finally:
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devnull.close()
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def collect_uncollected_logs(host):
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"""Collects any leftover uncollected logs from the client.
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@param host: The RemoteHost to collect from
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"""
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if host.job:
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try:
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logs = host.job.get_client_logs()
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for hostname, remote_path, local_path in logs:
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if hostname == host.hostname:
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logging.info("Retrieving logs from %s:%s into %s",
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hostname, remote_path, local_path)
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host.get_file(remote_path + "/", local_path + "/")
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except Exception, e:
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logging.warning("Error while trying to collect stranded "
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"Autotest client logs: %s", e)
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def collect_messages(host):
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"""Collects the 'new' contents of /var/log/messages.
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If host.VAR_LOG_MESSAGE_COPY_PATH is on the remote machine, collects
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the contents of /var/log/messages excluding whatever initial contents
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are already present in host.VAR_LOG_MESSAGE_COPY_PATH. If it is not
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present, simply collects the entire contents of /var/log/messages.
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@param host: The RemoteHost to collect from
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"""
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crashinfo_dir = get_crashinfo_dir(host, 'crashinfo')
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try:
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# paths to the messages files
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messages = os.path.join(crashinfo_dir, "messages")
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messages_raw = os.path.join(crashinfo_dir, "messages.raw")
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messages_at_start = os.path.join(crashinfo_dir, "messages.at_start")
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# grab the files from the remote host
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collect_log_file(host, host.VAR_LOG_MESSAGES_COPY_PATH,
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messages_at_start)
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collect_log_file(host, "/var/log/messages", messages_raw)
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# figure out how much of messages.raw to skip
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if os.path.exists(messages_at_start):
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# if the first lines of the messages at start should match the
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# first lines of the current messages; if they don't then messages
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# has been erase or rotated and we just grab all of it
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first_line_at_start = utils.read_one_line(messages_at_start)
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first_line_now = utils.read_one_line(messages_raw)
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if first_line_at_start != first_line_now:
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size_at_start = 0
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else:
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size_at_start = os.path.getsize(messages_at_start)
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else:
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size_at_start = 0
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raw_messages_file = open(messages_raw)
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messages_file = open(messages, "w")
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raw_messages_file.seek(size_at_start)
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shutil.copyfileobj(raw_messages_file, messages_file)
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raw_messages_file.close()
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messages_file.close()
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# get rid of the "raw" versions of messages
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os.remove(messages_raw)
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if os.path.exists(messages_at_start):
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os.remove(messages_at_start)
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except Exception, e:
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logging.warning("Error while collecting /var/log/messages: %s", e)
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