[CRIU] CRIU LXC error

Tue Feb 11 21:41:25 PST 2014

*hi,*
the output of reading mountinfo is as follows
root at ktmnp:/home/nplink#* lxc-info -n test-container*
state:   RUNNING
pid:      4953
root at ktmnp:/home/nplink# *cat /proc/4953/mountinfo*
131 72 252:0 /var/lib/lxc/test-container/rootfs / rw,relatime - ext4
/dev/mapper/ktmnp--vg-root rw,errors=remount-ro,data=ordered
132 131 0:65 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
133 131 0:66 / /sys rw,relatime - sysfs sysfs rw
134 133 0:17 / /sys/fs/fuse/connections rw,relatime - fusectl none rw
135 133 0:6 / /sys/kernel/debug rw,relatime - debugfs none rw
136 133 0:10 / /sys/kernel/security rw,relatime - securityfs none rw
137 133 0:22 / /sys/fs/pstore rw,relatime - pstore none rw
73 131 0:67 / /dev/pts rw,relatime - devpts devpts
rw,gid=5,mode=620,ptmxmode=666
74 131 0:67 /ptmx /dev/ptmx rw,relatime - devpts devpts
rw,gid=5,mode=620,ptmxmode=666
75 133 0:68 / /sys/fs/cgroup rw,relatime - tmpfs none rw,size=4k,mode=755
76 131 0:69 / /run rw,nosuid,noexec,relatime - tmpfs none
rw,size=49484k,mode=755
77 76 0:70 / /run/lock rw,nosuid,nodev,noexec,relatime - tmpfs none
rw,size=5120k
78 76 0:71 / /run/shm rw,nosuid,nodev,relatime - tmpfs none rw
79 76 0:72 / /run/user rw,nosuid,nodev,noexec,relatime - tmpfs none
rw,size=102400k,mode=755

with reference to
*https://help.ubuntu.com/lts/serverguide/lxc.html#lxc-installation
<https://help.ubuntu.com/lts/serverguide/lxc.html#lxc-installation>* I
stopped and started container with with this..

#*lxc-start -n test-container -f /var/lib/lxc/test-container/config*
heres what /var/lib/lxc/test-container/config looks like.
#*cat config*

*lxc.console = none*
lxc.network.type = veth
lxc.network.hwaddr = 00:16:3e:b3:f5:95
lxc.network.flags = up
lxc.network.link = lxcbr0
lxc.rootfs = /var/lib/lxc/test-container/rootfs
lxc.mount = /var/lib/lxc/test-container/fstab
lxc.pivotdir = lxc_putold
lxc.devttydir = lxc
*lxc.tty = 0*
lxc.pts = 1024
lxc.utsname = test-containerq
lxc.arch = amd64
lxc.cap.drop = sys_module mac_admin mac_override sys_time
lxc.cgroup.memory.limit_in_bytes = 1994M

lxc.cgroup.devices.deny = a
lxc.cgroup.devices.allow = c *:* m
lxc.cgroup.devices.allow = b *:* m
lxc.cgroup.devices.allow = c 1:3 rwm
lxc.cgroup.devices.allow = c 1:5 rwm
lxc.cgroup.devices.allow = c 5:1 rwm
lxc.cgroup.devices.allow = c 5:0 rwm
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
lxc.cgroup.devices.allow = c 254:0 rm
lxc.cgroup.devices.allow = c 10:229 rwm
lxc.cgroup.devices.allow = c 10:200 rwm
lxc.cgroup.devices.allow = c 1:7 rwm
lxc.cgroup.devices.allow = c 10:228 rwm
lxc.cgroup.devices.allow = c 10:232 rwm

Below is my kernel config

#*vim /boot/config-3.11.0-12-generic *
...
,,,,
...
# Character devices
#
CONFIG_TTY=y
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_VT_CONSOLE_SLEEP=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_UNIX98_PTYS=y
*CONFIG_DEVPTS_MULTIPLE_INSTANCES=y*
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=0
CONFIG_SERIAL_NONSTANDARD=y
CONFIG_ROCKETPORT=m
CONFIG_CYCLADES=m
....
...

Thankyou gentlemen

On Tue, Feb 11, 2014 at 7:02 PM, Andrew Vagin <avagin at parallels.com> wrote:

> On Tue, Feb 11, 2014 at 04:47:34PM +0400, Cyrill Gorcunov wrote:
> > On Tue, Feb 11, 2014 at 04:26:09PM +0400, Cyrill Gorcunov wrote:
> > > On Tue, Feb 11, 2014 at 05:32:46PM +0545, Urgen Sherpa wrote:
> > > >    /usr/lib/locale/C.UTF-8/LC_CTYPE (path inode=2883985)
> > > >    getty   2700 root    0u   CHR    5,1      0t0  937203 /dev/console
> > > >    getty   2700 root    1u   CHR    5,1      0t0  937203 /dev/console
> > > >    getty   2700 root    2u   CHR    5,1      0t0  937203 /dev/console
> > >
> > > Aha! So we're trying to dump /dev/console. I guess it's VT terminal,
> > > which has no "fetch index" operation. Need to think how to resolve it,
> > > thanks for report!
> >
> > Urgen, are you sure that you've set lxc.console = none and lxc.tty = 0 ?
> > The presense of /dev/console here with getty over it makes me thing
> > that lcx either not read your config, or you need to restart lcx
> container
> > probably.
>
> Probaly this CT uses devtmpfs, which isn't virtualized.
>
> # cat /proc/pid/mountinfo
>
> Which processes in CT have opened /dev/console?
>
> >
> > Also, do you have
> >
> > CONFIG_DEVPTS_MULTIPLE_INSTANCES=y
> >
> > in your kernel config?
> >
> >       Cyrill
>
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