mirror of
https://github.com/ceph/ceph
synced 2025-01-05 02:32:59 +00:00
93 lines
3.6 KiB
Python
93 lines
3.6 KiB
Python
# Copyright (C) 2018 Red Hat Inc.
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#
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# Authors: Sergio Lopez Pascual <slopezpa@redhat.com>
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# Brad Hubbard <bhubbard@redhat.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU Library Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Library Public License for more details.
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#
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# By default ceph daemons and clients maintain a list of log_max_recent (default
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# 10000) log entries at a high debug level. This script will attempt to dump out
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# that log from a ceph::log::Log* passed to the ceph-dump-log function or, if no
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# object is passed, default to the globally available 'g_ceph_context->_log'
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# (thanks Kefu). This pointer may be obtained via the _log member of a
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# CephContext object (i.e. *cct->_log) from any thread that contains such a
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# CephContext. Normally, you will find a thread waiting in
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# ceph::logging::Log::entry and the 'this' pointer from such a frame can also be
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# passed to ceph-dump-log.
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import gdb
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from datetime import datetime
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try:
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# Python 2 forward compatibility
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range = xrange
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except NameError:
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pass
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class CephDumpLog(gdb.Command):
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def __init__(self):
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super(CephDumpLog, self).__init__(
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'ceph-dump-log',
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gdb.COMMAND_DATA, gdb.COMPLETE_SYMBOL, False)
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def invoke(self, args, from_tty):
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arg_list = gdb.string_to_argv(args)
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if len(arg_list) < 1:
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log = gdb.parse_and_eval('g_ceph_context->_log')
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else:
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log = gdb.parse_and_eval(arg_list[0])
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luminous_mimic = None
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try:
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entry = log['m_recent']['m_head']
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size = log['m_recent']['m_len']
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luminous_mimic = True
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except gdb.error:
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entry = log['m_recent']['m_first']
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size = log['m_recent']['m_size']
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end = log['m_recent']['m_end']
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buff = log['m_recent']['m_buff']
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for i in range(size):
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if luminous_mimic:
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try: # early luminous
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stamp = int(str(entry['m_stamp']['tv']['tv_sec']) + str(entry['m_stamp']['tv']['tv_nsec']))
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logline = entry['m_streambuf']['m_buf']
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strlen = int(entry['m_streambuf']['m_buf_len'])
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except gdb.error: # mimic
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stamp = entry['m_stamp']['__d']['__r']['count']
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pptr = entry['m_data']['m_pptr']
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logline = entry['m_data']['m_buf']
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strlen = int(pptr - logline)
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else:
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stamp = entry['m_stamp']['__d']['__r']['count']
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logline = entry['str']['m_holder']['m_start']
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strlen = int(entry['str']['m_holder']['m_size'])
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thread = entry['m_thread']
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prio = entry['m_prio']
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subsys = entry['m_subsys']
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dt = datetime.fromtimestamp(int(stamp) / 1e9) # Giving up some precision
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gdb.write(dt.strftime('%Y-%m-%d %H:%M:%S.%f '))
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gdb.write("thread: {0:#x} priority: {1} subsystem: {2} ".
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format(int(thread), prio, subsys))
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gdb.write(logline.string("ascii", errors='ignore')[0:strlen])
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gdb.write("\n")
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if luminous_mimic:
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entry = entry['m_next'].dereference()
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else:
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entry = entry + 1
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if entry >= end:
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entry = buff
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CephDumpLog()
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