[CRIU] Fake mount points in dump

Stanislav Kinsburskiy skinsbursky at odin.com
Wed Jan 20 05:41:01 PST 2016



20.01.2016 14:24, Pavel Emelyanov пишет:
> On 01/20/2016 04:16 PM, Stanislav Kinsburskiу wrote:
>> 20 янв. 2016 г. 14:08 пользователь Pavel Emelyanov <xemul at parallels.com> написал:
>>>
>>>>> It is. Check the /proc/pid/mountinfo files themselves, maybe the mp just
>>>>> got propagated from host to container or vice versa.
>>>> I think the problem is much simpler.
>>>> Autofs uses "parse" callback for early check, whether it can be dumped
>>>> (checking pipe status).
>>>> The intention was to detect unsupported mounts early. But looks like
>>>> "parse" doesn't suit this role, because it's called for for host mounts.
>>>> What was the reason behind this callback?
>>> Parsing fs-specific options.
>>>
>> Why it can't be done, say, on dump stage?
> Pardon? The fstype->parse() is called on dump stage, isn't it?

Not really.
It's also called on check and restore stages.

>> What was the reason to invent one more callback?
> One more additionally to which?

In addition to dump callback.
Why it was required to add "parse" callback and parse options there 
instead of parsing them in "dump" callback?


> -- Pavel
>



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