linux-ext4 - Re: [PATCH 20/51] e2fsck: Verify extent tree blocks and clear the bad ones

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Date:	Mon, 19 Dec 2011 11:47:07 -0800
From:	"Darrick J. Wong" <djwong@...ibm.com>
To:	Andreas Dilger <adilger@...mcloud.com>
Cc:	Andreas Dilger <adilger.kernel@...ger.ca>,
	Theodore Tso <tytso@....edu>,
	Sunil Mushran <sunil.mushran@...cle.com>,
	Amir Goldstein <amir73il@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	Mingming Cao <cmm@...ibm.com>,
	Joel Becker <jlbec@...lplan.org>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
	Coly Li <colyli@...il.com>
Subject: Re: [PATCH 20/51] e2fsck: Verify extent tree blocks and clear the
	bad ones

On Mon, Dec 19, 2011 at 07:50:07AM +0100, Andreas Dilger wrote:
> On 2011-12-14, at 2:15, "Darrick J. Wong" <djwong@...ibm.com> wrote:
> 
> > When we encounter an extent tree block that passes the header check but fails
> > the checksum, offer to clear just that extent block instead of failing the
> > whole tree, which results in the entire inode being wiped out.
> > 
> > diff --git a/e2fsck/problem.c b/e2fsck/problem.c
> > index e74ad79..96b0de5 100644
> > --- a/e2fsck/problem.c
> > +++ b/e2fsck/problem.c
> > @@ -946,6 +946,12 @@ static struct e2fsck_problem problem_table[] = {
> >      N_("The bad @b @i looks @n.  "),
> >      PROMPT_CLEAR, 0 },
> > 
> > +    /* Extent block does not match extent */
> > +    { PR_1_EXTENT_CSUM_INVALID,
> > +      N_("@i %i extent block checksum does not match extent\n\t(logical @b "
> > +         "%c, @n physical @b %b, len %N)\n"),
> > +      PROMPT_CLEAR, 0 },
> 
> Since the comment above the problem definition is the only place that the
> full string can be found, it should match the printed string exactly. In this
> case it is missing "inode" at the start and "checksum" in the middle of the
> comment. 

Ok.

--D
> 
> Cheers, Andreas--
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