On 12/13/2012 10:23 AM, Phillip Susi expounded in part:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Is it possible to get dm to report > 512 byte sector size? If so, how?
blockdev --getss /dev/vg/lv (or any other block device)
That is probably logical sector size, however. The only way I know to
get physical sector size is:
hdparm -I /dev/sda
which reports logical and physical sector size. Some WD devices are
known to lie about physical sector size, however.
If you always align stuff to 4096, there won't be a problem. In fact,
new technology tends to have much larger alignment requirements for
optimum performance - say 128k, the size of an erase block, or 64k for a
RAID chunk size. So aligning everything to 1M should hold you for a while.
_______________________________________________
linux-lvm mailing list
linux-lvm@redhat.com
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
