[rhelv6-beta-list] How can I align the boundary of partition / LVM / FS within the kickstart script?

[Pasi Kärkkäinen]

On Sun, Aug 22, 2010 at 12:04:02PM -0400, Nico Kadel-Garcia wrote:
> On Sun, Aug 22, 2010 at 4:29 AM, Kirby Zhou <kirbyzhou at sohu-rd.com> wrote:
> > How can I align the boundary of partition / LVM / FS within the kickstart
> > script?
> >
> > There are 3 case which we need align with:
> >
> > 1.      The new 4k sector-size hard disk.
> > 2.      The strip size of a RAID array.
> > 3.      The block size of SSD erasing.
> >
> > But the anaconda always align partitions with 63.5kib, and set the size of
> > LVM header to 192kib.
> > How can I do something to adjust it?
> 
> I've encountered, headlong, similar issues with NFS images from a
> NetApp for VMware clients. The upstream NetApp has 4096 byte blocks on
> its native hardware, but there is no graceful way to inform the VMware
> clients that they should treat the NFS mounted filesystem images from
> the NetApp as 4096 byte block based. The result is chaos for the
> NetApp, trying to re-align all this traffic, because the "63-block"
> space assigned for MBR's and partitions for "msdos compatibility"
> means most if not all all of the partitions wind up misaligned.
> 
> I've submitted bug reports and RFE's for RHEL 5, and submitted '%pre'
> scripts to pre-align designated partitions and then use '--onpart'
> options for kickstart to use the existing partitions without
> rebuilding or re-aligning them. It's quite painful to do: it's not
> manageable or feasible with fdisk, you need to use parted. (Not
> gparted! The gnome parted graphical tool lacks access ot the block
> selection options for beginning partitions for the underlying 'parted'
> tool.)
> 
> It has to be done as a '%pre' operation, because /mnt/sysimage is
> still mounted recording logs at the '%post' step and is not easily
> released for re-partitioning. If you'd like copies of my tools, I'll
> be happy to post them or send them to you personally.
> 

Hello,

Please share your scripts here :)

-- Pasi