On 08/15/2012 12:20 PM, Darren Reed wrote: > Sašo Kiselkov wrote: >> On 08/15/2012 11:01 AM, Jim Klimov wrote: >> >>> Also I am not certain whether GRUB supports 4K sectors for >>> boot drives, or if some other parts of the system would >>> complain - so please write to the list (and/or the Wiki page) >>> about the results of your experiment ;) >>> >> >> Generally 4K sector drives support emulation of 512b mode (via the >> "Advanced Format" thing), so when accessed from the BIOS (which is what >> GRUB does), they will look and smell like an old-school IDE drive. ZFS >> internally is sector size agnostic, being ashift=12 simply means that >> 1<<12 is the smallest block you'll ever see in ZFS. >> > > GRUB is another part of the concern. > I've heard of instances where ZFS pools with 4K blocks are misaligned > due to the bootblocks - this is discussed here: > > https://wiki.archlinux.org/index.php/Advanced_Format > > Is this also a problem here?
That's more a question of how partitions and slices are aligned, not strictly how the filesystem is laid out internally, and is thus more a problem in the installer itself. I'm not sure how Illumos distros currently handle this, I haven't tried. Cheers, -- Saso ------------------------------------------- illumos-discuss Archives: https://www.listbox.com/member/archive/182180/=now RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175430-2e6923be Modify Your Subscription: https://www.listbox.com/member/?member_id=21175430&id_secret=21175430-6a77cda4 Powered by Listbox: http://www.listbox.com
