[Ocfs2-users] partition offset/alignment on SAN devices.

[Thomas.Zimolong at bmi.bund.de]

Hi!

> parted -- /dev/sdc mklabel gpt mkpart ext2 2048s -34s

Cool, I'll have to put that one somewhere into my "Library" :-)

> This gives you a partition aligned on a 1MiB boundary, which I figured
> was enough for any reasonable current or future alignment need.

Hm, as far as I understood, it's not a matter of "reserving enough space for
alignment", but the alignment has to exactly match the stripe size of your
shared disk, in our case, an EMC CLARiion LUN.

Heres some explanation on that:
<<http://www.cbinews.com/uploadfile/whitepaper/EMC2006052401.pdf>>

Maybe it's possible to transfer this basic information to whatever disk
subsystem is in use...


Greetz,
Thomas