Start the partition at any cylinder (it will always be a multiply of 4MB)
-c=dos (dos compatibility) will make sure that other partitions start at offset that is a multiply of 4MB.
I didn't test the creation of logical partition.
These days I only use md + lvm.
This methodology also ensures proper partition alignment for hardware raid.
For lvm I use --metadatasize 16320K in case I do a reshape of the underlying md device.
It's suitable for raid 5 or 6 with 2,4 or 8 data drives and chunk sizes from 64kb to 2048kb.
Careful with that. My fdisk (from util-linux-ng 2.17.2)
does 1MB alignment for the first partition, but then it does
no alignment at all for the 3 primary partitions and
while it puts 1MB between the logical partitions, that
also does not result in alignment to anything as far as
I can tell.
I suspect that you have to align yourself for the
partitions. This was with a new, blank disk, but I
gave sizes in kB, as the partitions go into RAID sets.
Maybe it aligns if you give sizes in MB.
Arno
--
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno@xxxxxxxxxxx
GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F
----
Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans
If it's in the news, don't worry about it. The very definition of
"news" is "something that hardly ever happens." -- Bruce Schneier
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