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Re: [Libguestfs] [parted-devel] "Error: Can't have a partition outside the disk!"



On Wed, Sep 29, 2010 at 05:28:33PM +0200, Karel Zak wrote:
> On Wed, Sep 29, 2010 at 02:55:59PM +0100, Richard W.M. Jones wrote:
> > On Wed, Sep 29, 2010 at 11:11:48AM +0200, Karel Zak wrote:
> > > On Sun, Sep 26, 2010 at 05:42:21PM +0100, Richard W.M. Jones wrote:
> > > > In any case I'll probably write a small utility which just zaps the
> > > > partition table without touching the rest of the bootloader.
> > > 
> > >  Maybe we can add this functionality to wipefs(8), libblkid is already
> > >  able to detect and parse almost all partition table formats.
> > 
> > Coincidentally I tried using wipefs within libguestfs (but not
> > successfully yet).  It really only wipes filesystems, which I guess
> > should be obvious from the name.  I think it should be extended to
> > wipe other stuff to: LVM, partition tables, RAID metadata being three
> > obvious ones.
> 
>  The latest version (F-14) also supports RAIDs and LVM.
>     
>         Karel
> 
> 
> 
>  $ wipefs /home/images/filesystems/mdraid.img 
> 
>  offset               type
>  ----------------------------------------------------------------
>  0x9f0000             linux_raid_member   [raid]
>                       UUID:  37c76b91-011a-05c5-d30c-1fd4c5c3dbbc
> 
> 
>  $ wipefs /home/images/filesystems/lvm2.img  
>  offset               type
>  ----------------------------------------------------------------
>  0x218                LVM2_member   [raid]
>                       UUID:  Vynv4k-APH8-xQER-HSBb-8VJ3-SvFF-PB5O1U

OK, that's good to know.  I'll add a wipefs wrapper to libguestfs at
some point.  It seems a more reliable way to do it than our current
method:

  http://libguestfs.org/guestfs.3.html#guestfs_zero

Rich.

-- 
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