On Wed, Mar 10, 2010 at 03:57:14PM -0600, Eric Sandeen wrote: > Mike Chambers wrote: > > Hadn't seen this discussed yet (not really a big hardware geek), and > > just saw an article about this today. Are we (linux as a whole) ready > > for this or getting ready, or already using it? And If we bought a new > > hd, via sata in my case within past year or newer computer in past year, > > are we using the new 4kb sectors now or just able to handle it? > > > > http://www.pcmag.com/article2/0,2817,2361156,00.asp > > There has been a lot of work upstream on 4k sector support, and in general > yes, we are ready. Is F12 ready or will only F13 be? E.g. if I want to have a RAID with LVM and dmcrypt, will this all align properly? I just bought a WD20EARS and tested on F12. fdisk has an option to set the sector size to 4096 byte, but it will still use sector 63 by default for a new partition. Shouldn't it then default to sector 16, which is sector 64 with 512 byte sector size? And pvcreate, mdadm and cryptsetup seem not to accept a sector size parameter. pvcreate and cryptsetup at least accept an alignment parameter, but this will leave it to me to make the math instead of doing it automatically. :-( I am not sure how well mdadm will behave, but it seems not to have any parameter to tweak the alignment or the sector size. Regards Till
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