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- fixed cgconfig service not to unmount stuff it did not mount

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- added better sample cgconfig.conf file to reflect systemd mounting all controllers during boot
Resolves: #702111
This commit is contained in:
Jan Safranek 2011-05-30 16:30:59 +02:00
parent 73e4df3125
commit 198fbe43ce
3 changed files with 207 additions and 14 deletions
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18
fedora-config.patch
View File

@ -3,7 +3,7 @@ Fedora specific configuration - we want to mount all controllers by default for
diff -up libcgroup-0.34/samples/cgconfig.conf.orig libcgroup-0.34/samples/cgconfig.conf
--- libcgroup-0.34/samples/cgconfig.conf.orig 2009-03-04 10:40:06.000000000 +0100
+++ libcgroup-0.34/samples/cgconfig.conf 2009-10-19 10:17:37.000000000 +0200
@@ -10,39 +10,17 @@
@@ -10,39 +10,8 @@
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
@ -22,7 +22,6 @@ diff -up libcgroup-0.34/samples/cgconfig.conf.orig libcgroup-0.34/samples/cgconf
-# cpu.shares = 1000;
-# }
-#}
+# See man cgconfig.conf for further details.
#
-#group daemons/ftp {
-# perm {
@ -44,17 +43,10 @@ diff -up libcgroup-0.34/samples/cgconfig.conf.orig libcgroup-0.34/samples/cgconf
-# cpu = /mnt/cgroups/cpu;
-# cpuacct = /mnt/cgroups/cpuacct;
-#}
+# By default, mount all controllers to /cgroup/<controller>
+
+mount {
+ cpuset = /sys/fs/cgroup/cpuset;
+ cpu = /sys/fs/cgroup/cpu;
+ cpuacct = /sys/fs/cgroup/cpuacct;
+ memory = /sys/fs/cgroup/memory;
+ devices = /sys/fs/cgroup/devices;
+ freezer = /sys/fs/cgroup/freezer;
+ net_cls = /sys/fs/cgroup/net_cls;
+}
+# By default, we expect systemd mounts everything on boot,
+# so there is not much to do.
+# See man cgconfig.conf for further details, how to create groups
+# on system boot using this file.
+
diff -up libcgroup-0.35.1/samples/cgconfig.sysconfig.orig libcgroup-0.35.1/samples/cgconfig.sysconfig
--- libcgroup-0.35.1/samples/cgconfig.sysconfig.orig 2010-03-09 14:56:34.000000000 +0100

194
libcgroup-0.37.1-systemd.patch Normal file
View File

@ -0,0 +1,194 @@
702111 - Starting LSB: start and stop the WLM configuration failed
- cgconfigparser should not unmount stuff it did not mounted
- cgconfigparser should accept empty config file
- rename the service
Backported these 3 pacthes:
commit 7155cc27430619be5ffcf1ddc2b6bd8cf7d6d7e0
Author: Dhaval Giani <dhaval.giani@gmail.com>
Date: Fri May 27 10:36:19 2011 +0200
cgconfig: Do not touch subsystems not mounted by cgconfig
cgconfig: Do not touch subsystems not mounted by cgconfig
In its failure path, cgconfig should only touch the subsystems
it had something to do with. Currently, it unmounts all the
subsystems in the config file. Correct this.
Signed-off-by: Dhaval Giani <dhaval.giani@gmail.com>
Signed-off-by: Jan Safranek <jsafrane@redhat.com>
commit 431587f4e21b36a3f08bc595d716a70d70314e70
Author: Jan Safranek <jsafrane@redhat.com>
Date: Fri May 20 15:53:05 2011 +0200
Updated cgconfig service descriptions
Signed-off-by: Jan Safranek <jsafrane@redhat.com>
commit 74e1b1e3d04c2f7999e367a20bf73396b61f9b64
Author: Jan Safranek <jsafrane@redhat.com>
Date: Fri May 20 15:52:58 2011 +0200
Fixed cgconfigparser to allow configs with no 'mount' section
cgconfig service fails when something else mounts cgroup hierarchies during
boot (e.g. systemd). Therefore we should allow cgconfig.conf to have no
'mount' section -> it's up to admin to ensure that controllers are mounted as
needed.
Because 'group' section is already optional, with this patch cgconfigparser
will accept empty configuration file. This is probably the best default
config for distros with systemd.
Changelog:
- fixed case with empty config file and no mounted controllers
- reworked the if conditions to be more clear
Signed-off-by: Jan Safranek <jsafrane@redhat.com>
diff -up libcgroup-0.37.1/doc/man/cgconfig.conf.5.systemd2 libcgroup-0.37.1/doc/man/cgconfig.conf.5
--- libcgroup-0.37.1/doc/man/cgconfig.conf.5.systemd2 2011-03-03 09:29:41.000000000 +0100
+++ libcgroup-0.37.1/doc/man/cgconfig.conf.5 2011-05-30 15:06:45.083249011 +0200
@@ -12,8 +12,8 @@ The file consists of
.I mount
and
.I group
-sections. These sections can be in arbitrary order. Any line starting with
-'#' is considered as a comment line and is ignored.
+sections. These sections can be in arbitrary order and both are optional.
+Any line starting with '#' is considered as a comment line and is ignored.
.LP
.I mount
section has this form:
@@ -50,6 +50,11 @@ controller, shall be mounted. The direct
automatically on cgconfig service startup if it does not exist and
is deleted on service shutdown.
.LP
+
+If no
+.I mount
+section is specified, no controllers are mounted.
+
.I group
section has this form:
.RS
@@ -171,6 +176,10 @@ created. Optionally it can be enclosed i
contain spaces then.
.RE
+If no
+.I group
+section is specified, no groups are created.
+
.\"********************************************"
.SH EXAMPLES
.LP
diff -up libcgroup-0.37.1/scripts/init.d/cgconfig.in.systemd2 libcgroup-0.37.1/scripts/init.d/cgconfig.in
--- libcgroup-0.37.1/scripts/init.d/cgconfig.in.systemd2 2011-05-30 15:00:36.269947252 +0200
+++ libcgroup-0.37.1/scripts/init.d/cgconfig.in 2011-05-30 15:00:36.284946695 +0200
@@ -25,8 +25,8 @@
# Required-Stop:
# Should-Start:
# Should-Stop:
-# Short-Description: start and stop the WLM configuration
-# Description: This script allows us to create a default configuration
+# Short-Description: Create and setup control group filesystem(s)
+# Description: Create and setup control group filesystem(s)
### END INIT INFO
# get correct location of binaries from configure
diff -up libcgroup-0.37.1/src/config.c.systemd2 libcgroup-0.37.1/src/config.c
--- libcgroup-0.37.1/src/config.c.systemd2 2011-03-03 09:29:41.000000000 +0100
+++ libcgroup-0.37.1/src/config.c 2011-05-30 15:17:08.317101247 +0200
@@ -394,6 +394,7 @@ static int cgroup_config_mount_fs(void)
int ret;
struct stat buff;
int i;
+ int error;
for (i = 0; i < config_table_index; i++) {
struct cg_mount_table_s *curr = &(config_mount_table[i]);
@@ -402,26 +403,39 @@ static int cgroup_config_mount_fs(void)
if (ret < 0 && errno != ENOENT) {
last_errno = errno;
- return ECGOTHER;
+ error = ECGOTHER;
+ goto out_err;
}
if (errno == ENOENT) {
ret = cg_mkdir_p(curr->path);
- if (ret)
- return ret;
+ if (ret) {
+ error = ret;
+ goto out_err;
+ }
} else if (!S_ISDIR(buff.st_mode)) {
errno = ENOTDIR;
last_errno = errno;
- return ECGOTHER;
+ error = ECGOTHER;
+ goto out_err;
}
ret = mount(CGROUP_FILESYSTEM, curr->path, CGROUP_FILESYSTEM,
0, curr->name);
- if (ret < 0)
- return ECGMOUNTFAIL;
+ if (ret < 0) {
+ error = ECGMOUNTFAIL;
+ goto out_err;
+ }
}
return 0;
+out_err:
+ /*
+ * If we come here, we have failed. Since we have touched only
+ * mountpoints prior to i, we shall operate on only them now.
+ */
+ config_table_index = 1;
+ return error;
}
/*
@@ -681,24 +695,25 @@ int cgroup_config_load_config(const char
mount_enabled = (config_mount_table[0].name[0] != '\0');
/*
- * The configuration should have either namespace or mount.
- * Not both and not none.
+ * The configuration should have namespace or mount, not both.
*/
- if (namespace_enabled == mount_enabled) {
+ if (namespace_enabled && mount_enabled) {
free(config_cgroup_table);
return ECGMOUNTNAMESPACE;
}
- /*
- * We do not allow both mount and namespace sections in the
- * same configuration file. So test for that
- */
-
error = cgroup_config_mount_fs();
if (error)
goto err_mnt;
error = cgroup_init();
+ if (error == ECGROUPNOTMOUNTED && cgroup_table_index == 0) {
+ /*
+ * The config file seems to be empty.
+ */
+ error = 0;
+ goto err_mnt;
+ }
if (error)
goto err_mnt;

9
libcgroup.spec
View File

@ -5,7 +5,7 @@ Name: libcgroup
Summary: Library to control and monitor control groups
Group: Development/Libraries
Version: 0.37.1
Release: 3%{?dist}
Release: 4%{?dist}
License: LGPLv2+
URL: http://libcg.sourceforge.net/
Source0: http://downloads.sourceforge.net/libcg/%{name}-%{version}.tar.bz2
@ -13,6 +13,7 @@ Source1: README.Fedora
Patch1: fedora-config.patch
Patch2: fedora-fix-initscripts.patch
Patch3: libcgroup-0.36.2-systemd.patch
Patch4: libcgroup-0.37.1-systemd.patch
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
BuildRequires: pam-devel
BuildRequires: byacc
@ -59,6 +60,7 @@ provide scripts to manage that configuration.
%patch1 -p1 -b .config
%patch2 -p1 -b .lsb
%patch3 -p1 -b .systemd
%patch4 -p1 -b .systemd2
%build
%configure --bindir=/bin --sbindir=/sbin --libdir=%{_libdir} --enable-initscript-install --enable-pam-module-dir=/%{_lib}/security
@ -165,6 +167,11 @@ fi
%doc COPYING INSTALL
%changelog
* Mon May 30 2011 Jan Safranek <jsafrane@redhat.com> 0.37.1-4
- fixed cgconfig service not to unmount stuff it did not mount
- added better sample cgconfig.conf file to reflect systemd
mounting all controllers during boot (#702111)
* Wed May 25 2011 Ivana Hutarova Varekova <varekova@redhat.com> 0.37.1-3
- split tools part from libcgroup package