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Re: data recovery from a single stripe

To: Aaron Macks <aaronm@xxxxxxxxxxxxxxxxxxxxx>
Subject: Re: data recovery from a single stripe
From: Chris Wedgwood <cw@xxxxxxxx>
Date: Fri, 14 Feb 2003 12:03:27 -0800
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <a05111b07ba72428698e2@[192.168.0.22]>
References: <a05111b07ba72428698e2@[192.168.0.22]>
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On Fri, Feb 14, 2003 at 01:55:47AM -0500, Aaron Macks wrote:

> Say I have 2 identical drives configured as a striped array, but
> only with 1 stripe, i.e. a contiguous data stripe from one drive to
> the next), and a single XFS partition on the pair.

Concatenated?

> If the first drive is lost, would the data on the second be
> recoverable, say by backup superblocks?  just trying to figure some
> things out thanks Aaron

Yes... the filesystem is a series of AGs, each with their own SB (a
copy of the main SB).

An AG contains enough information to recover the data for that AG
although you will almost certainly loose directory names and/or
structure.



  --cw


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