[CRIU] "ghost regfile" restore failure

Andrei Vagin avagin at virtuozzo.com
Fri Aug 4 02:05:13 MSK 2017


Hi Ross,

Here one of processes has a file descriptor to a deleted file. When criu
meets such file descriptor, it saves a content of a file
in the image directory. And on restore, criu generates a ghost file to
restore the file descriptor. You can find more info in this article:

https://criu.org/Invisible_files


On Mon, Jul 31, 2017 at 01:45:16PM +0000, Ross Boucher wrote:
> I ran into a restore failure today that I was curious about, here's the log:
> 
> https://gist.github.com/boucher/1a1274d1f1805a0ff3cb0be825b307be
> 
> The path in question is a read only mount into a docker container, but I'm
> not sure what the "ghost regfile" is or what criu is trying to do here.

Does anyone modify content of these read only mount?

> 
> -Ross

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