From: Dave Chinner <david@fromorbit.com>
To: Aaron Goulding <aarongldng@gmail.com>
Cc: xfs@oss.sgi.com
Subject: Re: XFS filesystem recovery from secondary superblocks
Date: Fri, 9 Nov 2012 08:02:10 +1100 [thread overview]
Message-ID: <20121108210210.GP6434@dastard> (raw)
In-Reply-To: <CABJyUz+r7yQSswqyBng_W=fAXxTz9heb88NeiKSeFU7j4ZD=Hw@mail.gmail.com>
On Thu, Nov 08, 2012 at 07:16:06AM -0800, Aaron Goulding wrote:
> Well I found an error in my bgrep. I was searching for XFSB but in the
> wrong order. Once fixed, I get almost 19,000 results, but I note most of
That seems like way too many to be filesystem metadata hits. I woul
dhave expected the same number of hits as there are AGs in the
filesytem. What you want is the XFSB string in the first 4
bytes of a sector, with the next sector having XAGF as the first
four bytes....
> those results happen within one section on the drive. I've attached the
> first 1MB from that point (4398047346688 bytes in) and I will grab the
> other results as 1K blocks.
I'm not going to look at 19000 potential hits. Narrow it down to
likely candidates first whithe the sector location filter...
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2012-11-08 21:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-31 5:02 XFS filesystem recovery from secondary superblocks Aaron Goulding
2012-11-01 9:18 ` Emmanuel Florac
2012-11-01 22:59 ` Dave Chinner
2012-11-07 15:24 ` Aaron Goulding
[not found] ` <CABJyUz+r7yQSswqyBng_W=fAXxTz9heb88NeiKSeFU7j4ZD=Hw@mail.gmail.com>
2012-11-08 21:02 ` Dave Chinner [this message]
[not found] ` <CABJyUzKy4YXVZAj=awVNfPD69eWo2mKhM7a-xWF1Vy-PD989sg@mail.gmail.com>
2012-11-09 10:48 ` Dave Chinner
2012-11-09 15:22 ` Aaron Goulding
2012-11-11 7:08 ` Aaron Goulding
2012-11-11 22:39 ` Dave Chinner
2012-11-14 3:26 ` Aaron Goulding
2012-11-25 0:20 ` Aaron Goulding
2012-11-11 22:36 ` Dave Chinner
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