[CRIU] DUMP test.sh in android

[Christopher Covington]

On 09/08/2014 06:54 AM, Pavel Emelyanov wrote:
> On 09/08/2014 12:16 AM, beproject criu wrote:
>> I have installed criu in android emulator and tried to dump simple process referring to http://criu.org/Simple_loop but i was not successfull. I get the following messages,
>>
>> /sdcard # criu dump -t 98 -vvvv -o dump.log && echo OK
>> /sdcard # cat dump.log 
>> (00.000780) ========================================
>> (00.003045) Dumping processes (pid: 98)
>> (00.003294) ========================================
>> (00.006383) Found anon-shmem device at 1
>> (00.006829) Reset 14399's dirty tracking
>> (00.007730)  ... done
>> (00.008526) Dirty tracking support is OFF
>> (00.010213) irmap: Searching irmap cache in work dir
>> (00.010530) irmap: Searching irmap cache in parent
>> (00.010744) irmap: No irmap cache
>> (00.016358) Writing image inventory (version 1)
>> (00.019428) Collected 1.pid namespace
>> (00.019806) Collected 2.net <http://2.net/> namespace
>> (00.020095) Collected 3.ipc namespace
>> (00.020458) Collected 4.uts namespace
>> (00.020759) Collected 5.mnt namespace
>> (00.020920) cg: Dumping cgroups for 14399
>> (00.022247) cg:  `- New css ID 1
>> (00.022471) cg:     `- [cpuset,debug,cpu,cpuacct,memory,devices,freezer,blkio,perf_event] -> [/]
>> (00.022628) cg: Set 1 is criu one
>> (00.025407) Seized task 98, state 1
>> (00.030503) Seized task 14394, state 0
>> (00.051241) Collected 14394 in 1 state
>> (00.052304) Collected 98 in 1 state
>> (00.053954) Lock network
>> (00.056039) type unsupported source rootfs 2 / @ ./ flags 0 options size=373396k,nr_inodes=93349,
>> (00.056453) type proc source proc 4 / @ ./proc flags 200000 options 
>> (00.056765) type sysfs source sysfs b / @ ./sys flags 200000 options 
>> (00.057289) type cgroup source none c / @ ./sys/fs/cgroup flags 200000 options cpuset,debug,cpu,cpuacct,memory,devices,freezer,blkio,perf_event,
>> (00.057582) type debugfs source none 6 / @ ./sys/kernel/debug flags 200000 options 
>> (00.057911) type devpts source devpts a / @ ./dev/pts flags 200000 options mode=600,ptmxmode=000,
>> (00.058346) type unsupported source /dev/mmcblk0 b300000 / @ ./sdcard flags 200000 options data=ordered,
>> (00.058690) Building mountpoints tree
>> (00.058848) Building plain mount tree
>> (00.058977) Working on 15->1
>> (00.059107) Working on 14->1
>> (00.059236) Working on 13->11
>> (00.059364) Working on 12->11
>> (00.059491) Working on 11->1
>> (00.059618) Working on 10->1
>> (00.059745) Working on 1->1
>> (00.061002) Error (mount.c:288): No root found for tree
> 
> Andrey, presumably this is because the / is on rootfs.

I'll send my patch for this. Any reason to refuse to dump from rootfs?

Christopher

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