[CRIU] Migration and Restart of http://criu.org/Simple_loop

[Pavel Emelyanov]

On 02/03/2015 04:36 PM, Thouraya TH wrote:
> Same result with --shell-job (it didn't work !)
> root at g-80:/home/imgDir# criu restore -d -vvv -o restore.log --shell-job && echo OK*
> 
> 
> *
> *cgroup.img on t*he source node:

CRIU stores images in binary form. Please, learn how the "criu show"
works to decode them.

I also asked for the cgroups on source and destination nodes, you only
showed what's there in the image file.

> 038YÑ^A^@^@
> à^B^H^B^R^_
> ^Eblkio^R^V/user/0.user/1.session^R^]
> ^Ccpu^R^V/user/0.user/1.session^R!
> ^Gcpuacct^R^V/user/0.user/1.session^R
> ^Fcpuset^R^V/user/0.user/1.session^R!
> ^Gdevices^R^V/user/0.user/1.session^R!
> ^Gfreezer^R^V/user/0.user/1.session^R!
> ^Ghugetlb^R^V/user/0.user/1.session^R
> ^Fmemory^R^V/user/0.user/1.session^R&
> ^Lname=systemd^R^V/user/0.user/1.session^R$
> 
> perf_event^R^V/user/0.user/1.session^R^H
> ^Fcpuset^R^E
> ^Ccpu^R
> ^Gcpuacct^R^H
> ^Fmemory^R
> ^Gdevices^R
> ^Gfreezer^R^G
> ^Eblkio^R^L
> 
> perf_event^R
> ^Ghugetlb^R^N
> ^Lname=systemd
> 
> cgroup.img on the destination node: (it's the same, i have used scp to send the all directory imgDir)
> 
> 038YÑ^A^@^@
> à^B^H^B^R^_
> ^Eblkio^R^V/user/0.user/1.session^R^]
> ^Ccpu^R^V/user/0.user/1.session^R!
> ^Gcpuacct^R^V/user/0.user/1.session^R
> ^Fcpuset^R^V/user/0.user/1.session^R!
> ^Gdevices^R^V/user/0.user/1.session^R!
> ^Gfreezer^R^V/user/0.user/1.session^R!
> ^Ghugetlb^R^V/user/0.user/1.session^R
> ^Fmemory^R^V/user/0.user/1.session^R&
> ^Lname=systemd^R^V/user/0.user/1.session^R$
> 
> perf_event^R^V/user/0.user/1.session^R^H
> ^Fcpuset^R^E
> ^Ccpu^R
> ^Gcpuacct^R^H
> ^Fmemory^R
> ^Gdevices^R
> ^Gfreezer^R^G
> ^Eblkio^R^L
> 
> perf_event^R
> ^Ghugetlb^R^N
> ^Lname=systemd
> 
> Bests.
> 
> 
> 2015-02-03 14:26 GMT+01:00 Pavel Emelyanov <xemul at parallels.com <mailto:xemul at parallels.com>>:
> 
>     On 02/03/2015 02:25 PM, Thouraya TH wrote:
> 
>     > *i try to migrate the imgDir on a new host:*
>     >
>     > scp -r *imgDir *root@*g-80*.xxxxxxx:/home
>     >
>     > root at g-80:/home# cd imgDir/
>     > root at g-80:/home/imgDir# ls
>     > cgroup.img      creds-1849.img  ext-files.img  filelocks.img  ids-1849.img   mm-1249.img    packetsk.img      pages-2.img      sigacts-1249.img  stats-dump
>     > core-1249.img   creds-1967.img  fanotify.img   fs-1249.img    ids-1967.img   mm-1849.img    pagemap-1249.img  pipes-data.img   sigacts-1849.img  timerfd.img
>     > core-1849.img   creds-1995.img  fdinfo-2.img   fs-1849.img    ids-1995.img   mm-1967.img    pagemap-1849.img  pipes.img        sigacts-1967.img  tty.img
>     > core-1967.img   dump.log        fdinfo-3.img   fs-1967.img    inetsk.img     mm-1995.img    pagemap-1967.img  pstree.img       sigacts-1995.img  tty-info.img
>     > core-1995.img   eventfd.img     fifo-data.img  fs-1995.img    inotify.img    netlinksk.img  pagemap-1995.img  reg-files.img    signalfd.img      tunfile.img
>     > creds-1249.img  eventpoll.img   fifo.img       ids-1249.img   inventory.img  ns-files.img   pages-1.img       remap-fpath.img  sk-queues.img     unixsk.img
>     >
>     >
>     > root at g-80:/home/imgDir# criu restore -d -vvv -o restore.log && echo OK
> 
>     Same images? The --shell-job is not there again.
> 
>     > (00.012355)   1249: cg: Move into 2
>     > (00.012371)   1249: Error (cgroup.c:907): cg: Can't move into blkio//user/0.user/1.session/tasks (-1/-1): No such file or directory
>     > (00.012405) Error (cr-restore.c:1838): Restoring FAILED.
>     > (00.018935) Error (cr-restore.c:1185): 1249 exited, status=1
> 
>     This means, that there's no cgroup called blkio//user/0.user/1.session/tasks.
>     Can you check what the cgroups are on the source node, on the destination one
>     and what's there in the cgroup.img image?
> 
>     Thanks,
>     Pavel
> 
> 
>