[libvirt] [libvirt-test-API][PATCH 1/2] Add freepage test
For system default pagesize, it's hard to calculate,
and it changes all the time, so just skip it. For others,
reading from sysfs to get free pages.
Signed-off-by: Jincheng Miao <jmiao(a)redhat.com>
---
repos/virconn/free_pages.py | 97 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 97 insertions(+), 0 deletions(-)
create mode 100644 repos/virconn/free_pages.py
diff --git a/repos/virconn/free_pages.py b/repos/virconn/free_pages.py
new file mode 100644
index 0000000..7172dfe
--- /dev/null
+++ b/repos/virconn/free_pages.py
@@ -0,0 +1,97 @@
+#!/usr/bin/env python
+# test libvirt free pages
+
+import os
+import resource
+
+import libvirt
+from libvirt import libvirtError
+
+from src import sharedmod
+
+required_params = ('cellid', 'pagesize',)
+optional_params = {}
+
+HUGEPAGE_PATH =
'/sys/devices/system/node/node%s/hugepages/hugepages-%skB/free_hugepages'
+
+def parse_unit(pagesz):
+ """ parse a integer value, its unit is KiB
+ """
+ val = int(pagesz[0:len(pagesz)-1])
+ unit = pagesz[-1]
+ if unit == 'K':
+ unit = 1
+ elif unit == 'M':
+ unit = 1024
+ elif unit == 'G':
+ unit = 1024*1024
+ else:
+ return None
+
+ return val * unit
+
+def parse_page_list(pagesize):
+ """ parse page size
+ """
+ if pagesize == None:
+ return None
+
+ l = list()
+ for ps in pagesize.split(','):
+ ps.strip().upper()
+ val = parse_unit(ps)
+ if val == None:
+ return None
+ l.append(val)
+ return l
+
+def check_free_pages(page_list, cell_id, free_page, logger):
+ """ check page size
+ """
+ for ps in page_list:
+ # if pagesize is equal to system pagesize, since it is hard to
+ # calculate, so we just pass it
+ if resource.getpagesize()/1024 == ps:
+ logger.info("skip to check default %sKB-page" % ps)
+ continue
+
+ sysfs_path = HUGEPAGE_PATH % (cell_id, ps)
+ if not os.access(sysfs_path, os.R_OK):
+ logger.error("could not find %s" % sysfs_path)
+ return False
+ f= open(sysfs_path)
+ fp = int(f.read())
+ f.close()
+ if not fp == free_page[0][ps]:
+ logger.error("Free %sKB page checking failed" % ps)
+ return False
+ logger.info("Free %sKB page: %s" % (ps, fp))
+
+ return True
+
+def free_pages(params):
+ """ test libvirt free pages
+ """
+ logger = params['logger']
+ cell_id = int(params['cellid'])
+
+ conn = sharedmod.libvirtobj['conn']
+
+ page_list = parse_page_list(params['pagesize'])
+ if page_list == None:
+ logger.error("pagesize could not be recognized")
+ return 1
+
+ try:
+ free_page = conn.getFreePages(page_list, cell_id, 1)
+
+ if check_free_pages(page_list, cell_id, free_page, logger):
+ logger.info("Success to check free page")
+ else:
+ logger.error("Failed to check free page")
+ return 1
+ except libvirtError, e:
+ logger.error("API error message: %s, error code is %s" %
+ e.message)
+ return 1
+ return 0
\ No newline at end of file
--
1.7.1