From 054dd4db1d9176f6959d32792e00d0d15c7b3edc Mon Sep 17 00:00:00 2001 From: smbaker Date: Wed, 17 Oct 2012 22:34:40 -0700 Subject: [PATCH] add task to freezer cgroup --- lxcsu | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/lxcsu b/lxcsu index 8e0c8a6..f794b88 100644 --- a/lxcsu +++ b/lxcsu @@ -69,6 +69,20 @@ except: print "Error assigning resources: %s"%slice_name exit(1) +# If the slice is frozen, then we'll get an EBUSY when trying to write to the task +# list for the freezer cgroup. Since the user couldn't do anything anyway, it's best +# in this case to error out the shell. (an alternative would be to un-freeze it, +# add the task, and re-freeze it) +try: + f=open('/sys/fs/cgroup/freezer/libvirt/lxc/%s/tasks'%(slice_name),'w') + f.write(str(os.getpid())) + # note: we need to call f.close() explicitly, or we'll get an exception in + # the object destructor, which will not be caught + f.close() +except: + print "Error adding task to freezer cgroup. Slice is probably frozen: %s" % slice_name + exit(1) + r1 = setns.chcontext('/proc/%s/ns/utc'%pid) r2 = setns.chcontext('/proc/%s/ns/ipc'%pid) path = '/proc/%s/ns/net'%pid -- 2.43.0