Changes between Version 30 and Version 31 of TipAndDoc/Linux/LXC

Timestamp:

May 5, 2013 12:05:28 AM (11 years ago)

Author:

mitty

Comment:

--

TipAndDoc/Linux/LXC

@@ -517 +517 @@
   * Debian Squeezeと異なり、Ubuntu 12.04では{{{lxc-cgroup -t container_name tasks}}}が使えない
 
+ * https://www.kernel.org/doc/Documentation/cgroups/cgroups.txt
+ > Each cgroup is represented by a directory in the cgroup file system
+ > containing the following files describing that cgroup:
+ > 
+ >  - tasks: list of tasks (by pid) attached to that cgroup.  This list
+ >    is not guaranteed to be sorted.  Writing a thread id into this file
+ >    moves the thread into this cgroup.
+ >  - cgroup.procs: list of tgids in the cgroup.  This list is not
+ >    guaranteed to be sorted or free of duplicate tgids, and userspace
+ >    should sort/uniquify the list if this property is required.
+ >    Writing a thread group id into this file moves all threads in that
+ >    group into this cgroup.
+ >  - notify_on_release flag: run the release agent on exit?
+ >  - release_agent: the path to use for release notifications (this file
+ >    exists in the top cgroup only)
+
  === Debian 6.0 ===
  * http://wiki.debian.org/LXC
@@ -529 +545 @@
 
  * $ sudo lxc-start -d -n lxc-test
+ * $ sudo lxc-cgroup -n lxc-test tasks
+{{{
+1432
+1569
+1571
+1598
+}}}
+
  * $ ls -1F /sys/fs/cgroup/
 {{{
@@ -558 +582 @@
 }}}
   * /sys/fs/cgroup/lxc-test/ も同じ構造
- * $ sudo lxc-cgroup -n lxc-test tasks
+ * $ cat /sys/fs/cgroup/lxc-test/tasks
 {{{
 1432
@@ -569 +593 @@
  * Ubuntu 12.04 with {{{aptitude install -R lxc}}}
   * cgroup関係のパッケージは{{{-R}}}をつけるとインストールされない
-
-
+ * $ ls -1F /sys/fs/cgroup/
+  * N/A
+ * $ sudo lxc-start -n lxc-test
+{{{
+lxc-start: failed to spawn 'lxc-test'
+}}}
+
+ ==== /etc/fstab ====
  * Ubuntu 12.04 with /etc/fstab:{{{cgroup  /sys/fs/cgroup  cgroup  defaults  0   0}}}
   * 起動時に自動でマウントされないため、{{{mount -a}}}する必要がある
+
  * $ sudo mount -a
+ * $ sudo lxc-start -d -n lxc-test
+ * $ sudo lxc-cgroup -n lxc-test tasks
+{{{
+lxc-cgroup: cgroup is not mounted
+lxc-cgroup: failed to retrieve value of 'tasks' for 'lxc-test'
+}}}
+
  * $ ls -1F /sys/fs/cgroup/
 {{{
@@ -657 +695 @@
 }}}
   * /sys/fs/cgroup/lxc/, /sys/fs/cgroup/lxc/lxc-test/ も同じ構造
- * $ sudo lxc-cgroup -n lxc-test tasks
-{{{
-lxc-cgroup: cgroup is not mounted
-lxc-cgroup: failed to retrieve value of 'tasks' for 'lxc-test'
-}}}
  * $ cat /sys/fs/cgroup/lxc/lxc-test/tasks
 {{{
@@ -681 +714 @@
 3058
 }}}
+
+ ==== cgroup-lite ====
+ * Ubuntu 12.04 with {{{cgroup-lite}}}
+  * aptitude install時に-Rとしない場合、{{{cgroup-lite}}}がRecommendsからインストールされる
+  * /bin/cgroups-mount
+{{{
+mount -t tmpfs -o uid=0,gid=0,mode=0755 cgroup /sys/fs/cgroup
+}}}
+ * $ sudo lxc-cgroup -n lxc-test tasks
+{{{
+lxc-cgroup: cgroup is not mounted
+lxc-cgroup: failed to retrieve value of 'tasks' for 'lxc-test'
+}}}
+
+ * $ ls -1F /sys/fs/cgroup/
+{{{
+blkio/
+cpu/
+cpuacct/
+cpuset/
+devices/
+freezer/
+memory/
+perf_event/
+}}}
+  * $ find /sys/fs/cgroup/ | grep lxc-test/tasks | xargs wc
+{{{
+17 17 102 /sys/fs/cgroup/perf_event/lxc/lxc-test/tasks
+17 17 102 /sys/fs/cgroup/blkio/lxc/lxc-test/tasks
+17 17 102 /sys/fs/cgroup/freezer/lxc/lxc-test/tasks
+17 17 102 /sys/fs/cgroup/devices/lxc/lxc-test/tasks
+17 17 102 /sys/fs/cgroup/memory/lxc/lxc-test/tasks
+17 17 102 /sys/fs/cgroup/cpuacct/lxc/lxc-test/tasks
+17 17 102 /sys/fs/cgroup/cpu/lxc/lxc-test/tasks
+17 17 102 /sys/fs/cgroup/cpuset/lxc/lxc-test/tasks
+}}}
+ * $ cat /sys/fs/cgroup/perf_event/lxc/lxc-test/tasks
+{{{
+17390
+17539
+17556
+17560
+17562
+17567
+17568
+17570
+17599
+17621
+17647
+17651
+17654
+17659
+17678
+17681
+17829
+}}}
+
+ ==== cgroup-bin ====
+ * Ubuntu 12.04 with {{{cgroup-bin}}}
+  * cgroup-binとcgroup-liteはコンフリクトする
+  * /etc/init/cgconfig.conf
+{{{
+mount -t tmpfs -o uid=0,gid=0,mode=0755 cgroups /sys/fs/cgroup
+}}}
+ * $ sudo lxc-cgroup -n lxc-test tasks
+{{{
+lxc-cgroup: cgroup is not mounted
+lxc-cgroup: failed to retrieve value of 'tasks' for 'lxc-test'
+}}}
+
+ * $ ls -1F /sys/fs/cgroup/
+{{{
+cpu/
+cpuacct/
+devices/
+freezer/
+memory/
+}}}
+  * $ find /sys/fs/cgroup/ | grep lxc-test/tasks | xargs wc
+{{{
+16 16 80 /sys/fs/cgroup/freezer/sysdefault/lxc/lxc-test/tasks
+16 16 80 /sys/fs/cgroup/memory/sysdefault/lxc/lxc-test/tasks
+16 16 80 /sys/fs/cgroup/devices/sysdefault/lxc/lxc-test/tasks
+16 16 80 /sys/fs/cgroup/cpuacct/sysdefault/lxc/lxc-test/tasks
+16 16 80 /sys/fs/cgroup/cpu/sysdefault/lxc/lxc-test/tasks
+}}}
+ * $ cat /sys/fs/cgroup/freezer/sysdefault/lxc/lxc-test/tasks
+{{{
+1296
+1390
+1434
+1461
+1470
+1471
+1473
+1474
+1502
+1524
+1552
+1562
+1563
+1566
+1580
+1582
+}}}