[CRIU] Dumping Error: Android Applications

[Andrew Vagin]

On Sat, Feb 20, 2016 at 10:12:09AM +0800, Abdullah Yousafzai wrote:
> Hello Guys,
> 
> This is the output of the  /proc/$pid/mountinfo :
>

Hi Abdullah,

Who creates a mount namespace for a process? If you know how to create
it, you can try to execute criu from a target mount namespace. On retore
you will need to create a mount namespace and then execute criu restore
from it.

You can try to use nsenter and unshare tools. nsenter allows to enter
into a name space and unshare allos to create a new name space.

nsenter -m -t $pid criu dump ....
unshare --propagation slave criu rester ....

Thanks,
Andrew

> root at x86_64:/sdcard/Download # cat /proc/15429/mountinfo
> 488 483 0:13 / / ro,relatime master:1 - tmpfs tmpfs ro
> 489 488 7:1 / /system ro,relatime master:2 - ext4 /dev/loop1 ro,data=ordered
> 490 488 0:14 / /data rw,relatime master:3 - tmpfs tmpfs rw
> 491 488 0:15 / /dev rw,nosuid,relatime master:4 - tmpfs tmpfs rw,mode=755
> 492 491 0:11 / /dev/pts rw,relatime master:5 - devpts devpts rw,mode=600
> 493 491 0:20 / /dev/cpuctl rw,relatime master:6 - cgroup none rw,cpu
> 494 488 0:4 / /proc rw,relatime master:7 - proc proc rw
> 495 488 0:12 / /sys rw,relatime master:8 - sysfs sysfs rw
> 496 495 0:6 / /sys/kernel/debug rw,relatime master:9 - debugfs debugfs rw
> 497 495 0:17 / /sys/fs/cgroup rw,relatime master:10 - tmpfs none rw,mode=
> 750,gid=1000
> 498 495 0:21 / /sys/fs/pstore rw,relatime master:11 - pstore pstore rw
> 499 488 0:16 / /acct rw,relatime master:12 - cgroup none rw,cpuacct
> 500 488 0:18 / /mnt/asec rw,relatime master:13 - tmpfs tmpfs rw,mode=755,gid=
> 1000
> 501 488 0:19 / /mnt/obb rw,relatime master:14 - tmpfs tmpfs rw,mode=755,gid=
> 1000
> 502 488 0:22 / /cache rw,nosuid,nodev,noatime master:15 - tmpfs none rw
> 503 488 0:23 / /mnt/shell/emulated rw,nosuid,nodev,noexec,relatime master:16 -
> fuse /dev/fuse rw,user_id=1023,group_id=1023,default_permissions,allow_other
> 504 488 0:25 / /storage/emulated rw,nosuid,nodev,relatime - tmpfs tmpfs rw,mode
> =751,gid=1028
> 505 504 0:23 /0 /storage/emulated/0 rw,nosuid,nodev,noexec,relatime master:16 -
> fuse /dev/fuse rw,user_id=1023,group_id=1023,default_permissions,allow_other
> 506 504 0:23 /0 /storage/emulated/legacy rw,nosuid,nodev,noexec,relatime
> master:16 - fuse /dev/fuse rw,user_id=1023,group_id=
> 1023,default_permissions,allow_other
> 
> Best Regard -- ALLAH Hafiz, May Almighty ALLAH bless you
> 
>  
> 
> [fed5b]   Abdullah Yousafzai
>           about.me/yousafzaiabdullah
>  
> *
> 
> 
> On Fri, Feb 19, 2016 at 7:25 PM, Pavel Emelyanov <xemul at virtuozzo.com> wrote:
> 
>     Here's the error:
>    
>     >         (00.002194) Error (mount.c:959): mnt: Mount 554 ./storage/
>     emulated/legacy (master_id: 16 shared_id: 0) has unreachable sharing. Try
>     --enable-external-masters.
> 
>     Abdullah, would you show the output of /proc/$pid/mountinfo of the
>     container
>     you dump?
> 
>     Cc-ing Tycho and Andrey.
>    
>     -- Pavel
> 
> 
>