[dm-devel] Re: [PATCH 3/3] Add timeout feature

[Takashi Sato]

Hi,

jim owens wrote:
> In addition to the user controllable timeout mechanism,
> we internally implement AUTO-THAW in the filesystem
> whenever necessary to prevent a kernel hang/crash.
>
> If an AUTO-THAW occurs, we post to the log and an
> event manager so the user knows the snapshot is bad.

I am interested in AUTO-THAW.
What is the difference between the timeout and AUTO-THAW?
When the kernel detects a deadlock, does it occur to solve it?

Cheers, Takashi