[CRIU] Any one tried use criu dump Maya?

[Adrian Reber]

I just tried it with xterm in the VNC session and it works for me. Can
you try with a simple application like xterm before trying maya.

		Adrian

On Fri, May 22, 2020 at 02:28:50AM -0700, Jun Gan wrote:
> Hello,
> 
> I'm trying to dump Maya by following this tutorial: https://criu.org/VNC
> 
> Somehow use newns.c doesn't work so I manually do it in the command line:
> 
> # cat vnc_server.sh
> #!/bin/bash
> set -m
> Xvnc :25 -v -geometry 800x600 -interface 0.0.0.0 -SecurityTypes none &
> pid=$!
> trap "kill $pid; wait" EXIT
> sleep 3
> DISPLAY=:25 $@
> 
> #setsid unshare -i ./vnc_server.sh maya
> 
> # ps axf
>  849901 ?        Ss     0:00 /bin/bash ./vnc_server.sh maya
>  849902 ?        Sl     0:00  \_ Xvnc :25 -v -geometry 800x600 -interface
> 0.0.0.0 -SecurityTypes none
>  849921 ?        S      0:00  \_ /bin/bash -f /usr/local/bin/maya
>  849935 ?        Sl     0:12      \_ /usr/autodesk/maya2020/bin/maya.bin
>  849940 ?        Sl     0:00          \_
> /opt/Autodesk/AdskLicensing/9.2.1.2399/AdskLicensingAgent/AdskLicensingAgent
> -i 94306fdc-e6a3-4f3e-7035-03617ab75c25
> 
> # ./criu dump -t 849901 -D test/ -o dump.log -v4 -j --tcp-established
> --external unix[2432303888] --external unix[2432544010]
> 
> Those two unix stream socket are:
> 1) seems maya use gnome-session-b
> u_str  ESTAB      0      0      @/tmp/.ICE-unix/404075 -1862464845
>   * -1862663408           users:(("gnome-session-b",pid=404075,fd=18))
> 
> 2) seems maya licensing agent using dbus.
> u_str  ESTAB      0      0      @/tmp/dbus-eVrtb5pHUv -1862436068
> * -1862423286           users:(("dbus-daemon",pid=404085,fd=26))
> 
> I have no much knowledge about them so I just add "external unix" to avoid
> error, managed to dump it successfully.
> 
> Then restore:
> 
> # ./criu restore -D test -o restore.log -v4 --tcp-established -d
> --shell-job --ext-unix-sk
> 
> 
> ICE error:  Offending minor opcode    = 0 ()
> 
>             Offending sequence number = 1
> 
>             Error class               = BadState
> 
>             Severity                  = FatalToConnection
> 
> 
> In the restore.log, I saw it was restored successfully, but I got above
> error immediately, and of cause Maya exits right after that.
> 
> 
> I didn't some research about "gnome-session" and "ice", but no idea why
> Maya uses those, and how I can avoid this problem.
> 
> Really appreciate it if anyone can help!
> 
> Thanks a lot!!!
> 
> -- 
> Jun Gan

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