[CRIU] LXC DUMP ERROR

[Pavel Emelyanov]

On 09/12/2014 11:31 PM, beproject criu wrote:
> I am trying to dump LXC container using following command
> 
> /sdcard # criu dump --root /usr/local/lib/lxc/rootfs/root --evasive-devices --tc
> p-established --file-locks -n net -n mnt -n ipc -n pid -vvvvvvvv -D data -o dump
> .log -t 79
> 
> but i get the following error :
> 
> Error (mount.c:517): Mount 58 (master_id: 12 shared_id: 0) has unreachable sharing

That's because LXC tools configured shared mountpoints that criu
doesn't yet support. Can you check with LXC guys what's the preferred
way of configuring container, they are in progress of integrating criu
with lxc right now.

> I have attached the dump.log file with the mail containing full log.
> 
> Content of mountpoint are:
> 
> /sdcard # lxc-attach -n L cat /proc/self/mountinfo
> 16 16 0:2 / / rw - rootfs rootfs rw,size=373304k,nr_inodes=93326
> 17 16 0:4 / /proc rw,relatime - proc proc rw
> 18 16 0:11 / /sys rw,relatime - sysfs sysfs rw
> 19 18 0:12 / /sys/fs/cgroup rw,relatime - cgroup none rw,cpuset,debug,cpu,cpuacct,memory,devices,freezer,blkio,perf_event,clone_children
> 20 18 0:6 / /sys/kernel/debug rw,relatime - debugfs none rw
> 21 16 0:10 / /dev/pts rw,relatime - devpts devpts rw,mode=600,ptmxmode=000
> 22 16 179:0 / /sdcard rw,relatime - ext3 /dev/mmcblk0 rw,data=ordered
> 24 16 0:2 /usr/local/lib/lxc/rootfs /usr/local/lib/lxc/rootfs rw - rootfs rootfs rw,size=373304k,nr_inodes=93326
> 25 24 0:14 / /usr/local/lib/lxc/rootfs rw,relatime - tmpfs none rw,size=12k,mode=755
> 35 25 179:0 /L/rootfs /usr/local/lib/lxc/rootfs/root rw,relatime shared:1 - ext3 /dev/mmcblk0 rw,data=ordered
> 36 35 0:13 / /usr/local/lib/lxc/rootfs/root/proc rw,relatime shared:2 - proc none rw
> 37 35 0:15 / /usr/local/lib/lxc/rootfs/root/sys rw,relatime shared:3 - sysfs none rw
> 26 35 0:16 / /usr/local/lib/lxc/rootfs/root/dev rw,nosuid,relatime shared:6 - tmpfs tmpfs rw,mode=755
> 27 26 0:10 / /usr/local/lib/lxc/rootfs/root/dev/pts rw,relatime shared:7 - devpts devpts rw,mode=600,ptmxmode=000
> 28 37 0:6 / /usr/local/lib/lxc/rootfs/root/sys/kernel/debug rw,relatime shared:4 - debugfs debugfs rw
> 29 37 0:17 / /usr/local/lib/lxc/rootfs/root/sys/fs/cgroup rw,relatime shared:5 - tmpfs none rw,mode=750,gid=1000
> 30 35 0:18 / /usr/local/lib/lxc/rootfs/root/mnt/asec rw,relatime shared:8 - tmpfs tmpfs rw,mode=755,gid=1000
> 31 35 0:19 / /usr/local/lib/lxc/rootfs/root/mnt/obb rw,relatime shared:9 - tmpfs tmpfs rw,mode=755,gid=1000
> 32 35 31:0 / /usr/local/lib/lxc/rootfs/root/system ro,relatime shared:10 - ext4 /dev/block/mtdblock0 ro,data=ordered
> 33 35 31:1 / /usr/local/lib/lxc/rootfs/root/data rw,nosuid,nodev,noatime shared:11 - ext4 /dev/block/mtdblock1 rw,data=ordered
> 34 35 31:2 / /usr/local/lib/lxc/rootfs/root/cache rw,nosuid,nodev,noatime shared:12 - yaffs2 /dev/block/mtdblock2 rw
> 
> Thanks.
> 
> encl(1).
> 
> 
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