Package: lxc
Version: 0.8.0~rc1-8+deb7u2
Severity: normal
Dear Maintainer,
Whenever I try to set the lxc.cgroup.memory.memsw.limit_in_bytes in one of my
lxc container, starting the container fails with the following message :
lxc-start: open /sys/fs/cgroup/lxc/uc23/memory.memsw.limit_in_bytes : No
such file or directory
lxc-start: failed to setup the cgroups for 'uc23'
lxc-start: failed to setup the container
lxc-start: invalid sequence number 1. expected 2
lxc-start: failed to spawn 'uc23'
lxc-start: Device or resource busy - failed to remove cgroup
'/sys/fs/cgroup//lxc/uc23'
The host machine has 1.5 GB RAM and 3GB swap.
here's the complete configuration file for the container :
# /var/lib/lxc/uc23/config
## Container
lxc.utsname = uc23
lxc.rootfs = /var/lib/lxc/uc23/rootfs
lxc.tty = 4
lxc.pts = 1024
lxc.arch = i386
## Capabilities
lxc.cap.drop = sys_module mac_admin mac_override sys_time
# When using LXC with apparmor, uncomment the next line to run unconfined:
#lxc.aa_profile = unconfined
lxc.cgroup.devices.deny = a
# /dev/null and zero
lxc.cgroup.devices.allow = c 1:3 rwm
lxc.cgroup.devices.allow = c 1:5 rwm
# /dev/tty[1-4] consoles
lxc.cgroup.devices.allow = c 5:1 rwm
lxc.cgroup.devices.allow = c 5:0 rwm
lxc.cgroup.devices.allow = c 4:0 rwm
lxc.cgroup.devices.allow = c 4:1 rwm
# /dev/{,u}random
lxc.cgroup.devices.allow = c 1:9 rwm
lxc.cgroup.devices.allow = c 1:8 rwm
lxc.cgroup.devices.allow = c 136:* rwm
lxc.cgroup.devices.allow = c 5:2 rwm
# rtc
lxc.cgroup.devices.allow = c 254:0 rm
# mounts point
lxc.mount.entry = proc proc proc nodev,noexec,nosuid 0 0
lxc.mount.entry = sysfs sys sysfs defaults 0 0
## Network
lxc.network.type = veth
lxc.network.flags = up
lxc.network.hwaddr = 00:16:3e:00:00:32
lxc.network.link = vzbr0
lxc.network.mtu = 1500
lxc.network.name = eth0
lxc.network.veth.pair = veth-uc23
## Limits
lxc.cgroup.memory.limit_in_bytes = 1G
lxc.cgroup.memory.memsw.limit_in_bytes = 2G
lxc.cgroup.memory.soft_limit_in_bytes = 800M
I use the default wheezy kernel where, AFAICT, CONFIG_CGROUP_MEM_RES_CTLR_SWAP
is set (in /boot/config-3.2.0-4-686-pae
/etc/default/grub contains the following line :
GRUB_CMDLINE_LINUX="cgroup_enable=memory swapaccount"
I read LXC README.Debian file and kernel documentation about cgroups and I
cannot find where I'd do something wrong.
Thanks in advance,
Patrice Pillot
-- System Information:
Debian Release: 7.4
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)
Kernel: Linux 3.2.0-4-686-pae (SMP w/1 CPU core)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8) (ignored: LC_ALL
set to fr_FR.utf8)
Shell: /bin/sh linked to /bin/dash
Versions of packages lxc depends on:
ii debconf [debconf-2.0] 1.5.49
ii libc6 2.13-38+deb7u1
ii libcap2 1:2.22-1.2
ii multiarch-support 2.13-38+deb7u1
Versions of packages lxc recommends:
ii debootstrap 1.0.48+deb7u1
ii libcap2-bin 1:2.22-1.2
ii rsync 3.0.9-4
Versions of packages lxc suggests:
ii lxctl 0.3.1+debian-2
-- debconf information:
lxc/shutdown: /usr/bin/lxc-halt
* lxc/directory: /var/lib/lxc
lxc/title:
lxc/auto: true
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