ping...
-------- Original Message --------
Subject: [Libcg-devel] Question about the dull cgred
Date: Wed, 23 Oct 2013 14:15:41 +0800
From: Libo Chen <clbchenlibo.c...@huawei.com>
To: Libcg Development list <libcg-devel@lists.sourceforge.net>
CC: Wengmeiling <wengmeiling.w...@huawei.com>, Li Zefan <lize...@huawei.com>
Hi guys,
Cgred cannot obtain the controller change in the Cgroup once the service
has started.
example:
cgrules.conf :
root:ping cpu test1
% memory test2
cgconfig.conf:
mount {
cpu = /cgroup/cpu;
}
group test1{
cpu {
}
}
#/etc/init.d/cgconfig start
#/etc/init.d/cgred start
#ping a.b.c.d
the ping is in test1.
#ctrl+c
#mount -t cgroup -o memory cgroup /cgroup/memory
#cgcreate -g memory:test2
#ping a.b.c.d
but the ping cannot be attached to test2. Looking through the code, the
reason is
in cgroup_attach_task_pid(), cg_mount_table initialized by cgroup_init
doesn't conclude
memory controller.
I know restart cgred is ok, but it is not enough smart. I think the most
ideal way is
cgred can apperceive the controller change, and then update cg_mount_table.
What is your opinion?
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