Re: xfs_db

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On Mon, Oct 15, 2012 at 03:47:38PM -0500, Eric Sandeen wrote:
> 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.

A better question might be: "why do you want to corrupt a specific
inode"? To test repair, or online detection, or something else?

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx

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