[linux-lvm] Data alignment

Eugene Vilensky evilensky at gmail.com
Fri Mar 19 18:36:56 UTC 2010

On Fri, Mar 19, 2010 at 1:13 PM, Phillip Susi <psusi at cfl.rr.com> wrote:
> I have been trying to get my logical volume to be aligned to a 512 KB
> boundary on my SSD so it lines up with the flash erase block.  I thought
> I could do this with pvcreate --dataalign 1024, but this caused the data
> to be aligned to a 1024 sector boundary within the partition, which
> itself starts on sector 63.  I then thought the --dataalignoffsest
> switch would help, but specifying 63 there caused the data to be moved
> to sector 1087.  I tried giving it -63, but was told that a negative
> number is not allowed.  Why not?  How can I get the data to start on
> sector 1024-63 of the partition so it ends up on pysical sector 1024 of
> the disk?

Align the partition?

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