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Keir Fraser
41859f6925
From: Andreas Florath <xen@flonatel.org> Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
69 lines
2.0 KiB
Python
69 lines
2.0 KiB
Python
"""
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XenMemory.py - grep memory from domU
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This module can handle the /proc/xen/balloon as well as the sysfs
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memory interface.
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Copyright (C) flonatel GmbH & Co. KG, 2009
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Author: Andreas Florath
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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 General Public License as published by
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the Free Software Foundation; under version 2 of the License.
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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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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import os
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from Test import *
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class XenMemory:
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def __init__(self, console):
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self.console = console
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self.sysfs_mem_dir = "/sys/devices/system/xen_memory/xen_memory0"
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try:
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res = self.console.runCmd("ls " + self.sysfs_mem_dir)
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self.use_sysfs = res['return'] == 0
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except ConsoleError, e:
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FAIL(str(e))
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def get_mem_from_domU_sysfs(self):
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try:
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run = self.console.runCmd(
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"cat " + os.path.join(self.sysfs_mem_dir, "info/current_kb"))
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except ConsoleError, e:
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FAIL(str(e))
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return int(run["output"]) / 1024
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def get_mem_from_domU_balloon(self):
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try:
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run = self.console.runCmd("cat /proc/xen/balloon | grep Current");
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except ConsoleError, e:
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FAIL(str(e))
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match = re.match("^Current allocation:\s+(\d+)\skB", run["output"])
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if not match:
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FAIL("Invalid domU meminfo line")
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return int(match.group(1)) / 1024
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# Prefer sysfs interface
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def get_mem_from_domU(self):
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if self.use_sysfs:
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return self.get_mem_from_domU_sysfs()
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else:
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return self.get_mem_from_domU_balloon()
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