tests: Ignore cpuset exclusive errors in test 038

Setting the cpuset exclusive can be challenging because other
cgroups could be using the cpu that is slated to become exclusive
to this cgroup.  Add try/except handling to test 038 for when we
can't get the exclusive bit set, so that the test doesn't fail due
to circumstances beyond libcgroup's control.

Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>

diff --git a/ftests/038-cgxget-cpuset_settings.py b/ftests/038-cgxget-cpuset_settings.py
index 720e179181110dd3dc58d26d33c81495b665d078..b376ecbe2c354eb17295d89b99ccec634a89f827 100755 (executable)
--- a/ftests/038-cgxget-cpuset_settings.py
+++ b/ftests/038-cgxget-cpuset_settings.py
@@ -8,7 +8,7 @@
 #
 
 from cgroup import Cgroup, CgroupVersion
-from run import Run
+from run import Run, RunError
 import consts
 import ftests
 import sys
@@ -94,8 +94,15 @@ def test(config):
     cause = None
 
     for entry in TABLE:
-        Cgroup.xset(config, cgname=CGNAME, setting=entry[0], value=entry[1],
-                    version=entry[2])
+        try:
+            Cgroup.xset(config, cgname=CGNAME, setting=entry[0],
+                        value=entry[1], version=entry[2])
+        except RunError as re:
+            if re.stderr.find('Invalid argument') >= 0:
+                # The kernel disallowed this setting, likely due to the many
+                # complexities of exclusive cpusets
+                continue
+            raise re
 
         out = Cgroup.xget(config, cgname=CGNAME, setting=entry[3],
                           version=entry[5], values_only=True,