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Re: rebuilt HW RAID60 array; XFS filesystem looks bad now

To: Paul Brunk <pbrunk@xxxxxxx>, xfs@xxxxxxxxxxx
Subject: Re: rebuilt HW RAID60 array; XFS filesystem looks bad now
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Mon, 03 Mar 2014 15:24:32 -0600
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <5314EE97.3020004@xxxxxxx>
References: <5314EE97.3020004@xxxxxxx>
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Hi Paul -

On 3/3/14, 3:05 PM, Paul Brunk wrote:
> Hi:

<snip story about very unhappy raid>

It sounds like things are badly scrambled.

> Is there anything I should try prior to xfs_repair -L?

The log failure is probably just the first error xfs encounters;
I imagine that after you zap the log, you'll find that everything
else is in equally bad shape.

You could _try_ an 

# xfs_metadump -o /dev/whatever fs.metadump
# xfs_mdrestore fs.metadump fs.img

and then try your various metadata salvage techniques on fs.img
(recreating as necessary with another xfs_mdrestore after failure)
as practice runs, but I'm guessing that xfs_metadump will fail
in equally spectacular ways.

Unless you can get your storage somehow reassembled properly, I doubt
that there's much xfs tools can do to help you.


> I'm just trying to salvage whatever I can from this FS.  I'm aware it
> could be all gone.  Thanks.

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