diff options
Diffstat (limited to 'resources/libraries')
| -rw-r--r-- | resources/libraries/python/QemuUtils.py | 95 |
1 files changed, 82 insertions, 13 deletions
diff --git a/resources/libraries/python/QemuUtils.py b/resources/libraries/python/QemuUtils.py index cfdbc7ffa4..ea1d56a3c0 100644 --- a/resources/libraries/python/QemuUtils.py +++ b/resources/libraries/python/QemuUtils.py @@ -15,7 +15,6 @@ from time import time, sleep import json -import re from robot.api import logger @@ -252,7 +251,8 @@ class QemuUtils(object): if int(ret_code) != 0: logger.debug('QGA execute failed {0}'.format(stderr)) raise RuntimeError('QGA execute "{0}" ' - 'failed on {1}'.format(cmd, self._node['host'])) + 'failed on {1}'.format(qga_cmd, + self._node['host'])) logger.trace(stdout) if not stdout: return {} @@ -337,17 +337,12 @@ class QemuUtils(object): """Huge page check.""" huge_mnt = self._qemu_opt.get('huge_mnt') mem_size = self._qemu_opt.get('mem_size') - # Check size of free huge pages - (_, output, _) = self._ssh.exec_command('grep Huge /proc/meminfo') - regex = re.compile(r'HugePages_Free:\s+(\d+)') - match = regex.search(output) - huge_free = int(match.group(1)) - regex = re.compile(r'HugePages_Total:\s+(\d+)') - match = regex.search(output) - huge_total = int(match.group(1)) - regex = re.compile(r'Hugepagesize:\s+(\d+)') - match = regex.search(output) - huge_size = int(match.group(1)) + + # Get huge pages information + huge_size = self._get_huge_page_size() + huge_free = self._get_huge_page_free(huge_size) + huge_total = self._get_huge_page_total(huge_size) + # Check if memory reqested by qemu is available on host if (mem_size * 1024) > (huge_free * huge_size): # If we want to allocate hugepage dynamically @@ -399,6 +394,80 @@ class QemuUtils(object): raise RuntimeError('Mount huge pages failed on {0}'.format( self._node['host'])) + def _get_huge_page_size(self): + """Get default size of huge pages in system. + + :returns: Default size of free huge pages in system. + :rtype: int + :raises: RuntimeError if reading failed for three times. + """ + # TODO: remove to dedicated library + cmd_huge_size = "grep Hugepagesize /proc/meminfo | awk '{ print $2 }'" + for _ in range(3): + (ret, out, _) = self._ssh.exec_command_sudo(cmd_huge_size) + if ret == 0: + try: + huge_size = int(out) + except ValueError: + logger.trace('Reading huge page size information failed') + else: + break + else: + raise RuntimeError('Getting huge page size information failed.') + return huge_size + + def _get_huge_page_free(self, huge_size): + """Get total number of huge pages in system. + + :param huge_size: Size of hugepages. + :type huge_size: int + :returns: Number of free huge pages in system. + :rtype: int + :raises: RuntimeError if reading failed for three times. + """ + # TODO: add numa aware option + # TODO: remove to dedicated library + cmd_huge_free = 'cat /sys/kernel/mm/hugepages/hugepages-{0}kB/'\ + 'free_hugepages'.format(huge_size) + for _ in range(3): + (ret, out, _) = self._ssh.exec_command_sudo(cmd_huge_free) + if ret == 0: + try: + huge_free = int(out) + except ValueError: + logger.trace('Reading free huge pages information failed') + else: + break + else: + raise RuntimeError('Getting free huge pages information failed.') + return huge_free + + def _get_huge_page_total(self, huge_size): + """Get total number of huge pages in system. + + :param huge_size: Size of hugepages. + :type huge_size: int + :returns: Total number of huge pages in system. + :rtype: int + :raises: RuntimeError if reading failed for three times. + """ + # TODO: add numa aware option + # TODO: remove to dedicated library + cmd_huge_total = 'cat /sys/kernel/mm/hugepages/hugepages-{0}kB/'\ + 'nr_hugepages'.format(huge_size) + for _ in range(3): + (ret, out, _) = self._ssh.exec_command_sudo(cmd_huge_total) + if ret == 0: + try: + huge_total = int(out) + except ValueError: + logger.trace('Reading total huge pages information failed') + else: + break + else: + raise RuntimeError('Getting total huge pages information failed.') + return huge_total + def qemu_start(self): """Start QEMU and wait until VM boot. |