Hi Ric, On 07/03/2016 15:07, Ric Wheeler wrote: > On 02/23/2016 11:19 AM, Loic Dachary wrote: >> Here it is http://tracker.ceph.com/issues/14842 >> >> On 23/02/2016 12:24, Somnath Roy wrote: >>> eph-deploy is creating data partition from sector 1 ignoring what sgdisk is recommending (256 in my disk). Basically, it should be aligned with physical sector size (reported in /sys/block/<device>/queue/physical_block_size). In my case it is 16K physical and 4K logical...256 is perfectly fine as sgdisk/fdisk internally decides. >>>> Disk performance will be severely impacted because of partitioning this way from ceph-deploy , > > I think that more modern partition tools handle alignment better (and handle the modern partition types) - sfdisk and parted both are better than fdisk I believe. > > For RHEL & Fedora, we try hard to make sure that we use the advertised alignment when we create a partition and default to an alignment on sector 2048 (1MB) if it is not set by the device. So far we've used https://sourceforge.net/projects/gptfdisk/, do you know if it has limitations that would be better addressed by other tools ? Cheers -- Loïc Dachary, Artisan Logiciel Libre -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
