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Date: Mon, 15 Oct 2012 15:47:38 -0500
From: Eric Sandeen <sandeen@sandeen.net>
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Subject: Re: xfs_db
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To: Anshul Kundra <anshul.kundra@hcl.com>
Cc: "xfs@oss.sgi.com" <xfs@oss.sgi.com>

On 10/15/12 9:34 AM, Anshul Kundra wrote:
> Suppose in XFS file system I want to corrupt a inode of my choice,
> will it be possible using xfs_db
> 
> Xfs_db blockget < inode number > blocktrash < seed value and type of
> block >
> 
> In the manuals it is written that it takes a random inodes for the
> corruption which it does in actual practice, so can I use any
> specific command to corrupt the inode (131 )

As the manual says, blocktrash trashes random metadata blocks (possibly
of specified type).

You can, however, write whatever you want into various fields of
inode 131 via xfs_db, there's just no built-in random method to
do that.

-Eric

> 
> Thanks & Regards
> 
> Anshul Kundra
> 
> 
> 

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