[CRIU] Criu mod to restore files to state when checkpoint taken ...

[Christopher Covington]

Hi Pavel,

On 12/31/2014 08:50 AM, Pavel Emelyanov wrote:
> On 12/31/2014 03:53 PM, "Mark O'Neill" wrote:

>> 3. The required kernel functions (described on Criu website) must be
>> added as modules (-=m) and not hardwired into kernel (=y) in Linux
>> config file.
> 
> This is strange. What problems have you seen with all-in kernel?

At least for me, commit 2b5d06817f1bb2b28eec50b6705b1584435e580b introduced
the following, which is actually spurious:

(00.098217) Error (util.c:576): exited, status=1
(00.164971) Error (util.c:576): exited, status=1
(00.216945) Error (util.c:576): exited, status=1
(00.296716) Error (util.c:576): exited, status=1
(00.368518) Error (util.c:576): exited, status=1

I originally proposed [1] a somewhat complex change of probing
/proc/config.gz, but I think a quick and actually more general (as it doesn't
require /proc/config.gz which is itself a configuration option) fix is to pass
an fd to /dev/null into the cr_system() call.

1. http://lists.openvz.org/pipermail/criu/2014-December/018352.html

Chris

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