[CRIU] criu "Can't stat piggie"

[Pavel Emelyanov]

On 05/04/2013 02:22 PM, Валентин Росавицкий wrote:
> 04.05.2013 13:04, Pavel Emelyanov пишет:
>> On 05/04/2013 01:59 PM, Валентин Росавицкий wrote:
>>> Hello,
>>> just compiled criu and can't run, getting error
>>>
>>> # ./criu dump -D checkpoint -t 534
>>> (00.000119) Error (kerndat.c:37): Can't stat piggie: No such file or 
>>> directory
>> You're probably using misconfigured kernel (in particular the
>> CONFIG_CHECKPOINT_RESTORE option is the first suspect). What does
>>
>> # crtools check --ms
>>
>> say?
>>
>>> (00.000172) Error (cr-dump.c:1640): Dumping FAILED.
>>>
>>> Fresh installion, source code from git.criu.org
>>>
>>> ALT Linux Sisyphus x86_64
>>> Linux ua132 2.6.32-ovz-el-alt84 #1 SMP Wed Mar 13 03:07:59 UTC 2013 
>>> x86_64 GNU/Linux

Ah! I didn't pay attention to this on the first e-mail. On this kernel criu
won't work, sorry. Plz, refer to http://criu.org/Installation page for info
about how to configure the kernel, the minimal requirement is v3.9 now.

>>>
>>> In kerndat.c - sprintf(maps, "/proc/self/map_files/%lx-%lx",
>>> /proc/self/map_files/%lx-%lx - is this right?
>> Yes. Why do you think it can be not?
>>
>>> Command running from HN
>> Thanks,
>> Pavel
>>
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>>>
> 
> Hmm, maybe
> I thought it working in userspace and no need to configure kernel

It does, but it uses very-very new kernel API extensions, thus some
care about the kernel work is required. For now (before first stable
v1.0 release) the most recent upstream kernel should be used.

Thanks,
Pavel