[CRIU] OverlayFS Patch

[Gabriel Guimaraes]

On Tue, Aug 4, 2015 at 10:39 AM, Gabriel Guimaraes <guimaraesg at google.com>
wrote:

> Hi Pavel,
>
> Filipe said I should create an open pull request, which is simpler:
>
> https://github.com/xemul/criu/pull/15
>
> If you still want me to break down the patch and send you via email I can
> also do that.
>
> Best,
> Gabriel
>
> On Tue, Aug 4, 2015 at 10:17 AM, Pavel Emelyanov <xemul at parallels.com>
> wrote:
>
>> On 08/03/2015 11:27 PM, Gabriel Guimaraes wrote:
>> > Hi Pavel,
>> >
>> > I believe Saied has already talked to you about this patch. It enables
>> the --overlayfs flag in CRIU which
>> > compensates for the OverlayFS bug in the Linux Kernel before version
>> 4.2 (more about the bug at
>> > http://criu.org/Docker). More detailed information can be found in the
>> patch itself.
>>
>> Great :) But I see 3 patches inside. Would you split the e-mails too?
>>
>> > We did not implement a very sophisticated error checking mechanism, so
>> an error such as "buffer too small"
>> > within __lookup_overlayfs will be printed but won't necessarily make
>> CRIU abort. If you'd like, we can
>> > change that, but in my opinion this would make the code a lot more
>> complicated with few gains, since it's
>> > already easy to debug what error happened as is.
>>
>> Sure, let's keep this simple all the more so this is a workaround that
>> will go away soon.
>>
>> -- Pavel
>>
>>
>
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