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Re: Some concern about the journal support

From: Bean
Subject: Re: Some concern about the journal support
Date: Fri, 13 Jun 2008 18:01:49 +0800

On Fri, Jun 13, 2008 at 5:05 PM, Bean <address@hidden> wrote:
> Hi,
> I think we need to disable journal sometimes. Tools like grub-setup
> and grub-install is run in an active system, that means sectors could
> easily end up in the journal. However, journal is a temperately
> buffer, space can be reused after a while. In this case, we should
> bypass the journal and access the underlying file system directly.
> Perhaps we can use a variable like no_journal to control the journal
> support, any suggestions ?

More thoughts about this issue. I think the problem is in the
read_hook. If we're just reading, it make no difference whether it's
from journal or real location, however, if the read_hook is not empty,
we also need to pass the sector location to upper layer. Perhaps we
can disable journal when the read hook is not null ?


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