>So let's assume your vendor does the smart thing and allows you >flexibility in specifying per drive strip size. Assume for example the >stripe unit (strip, chunk) of the array is 64KB, there are 10 stripe >spindles (12-2=10), and the local device name of the LUN is /dev/sdb. >To create an aligned XFS filesystem on this you would use something like: >$ mkfs.xfs -d su=64k sw=10 /dev/sdb Great explanations! (some of it I am still trying to understand :-) In this case on my HP P2000 G3, I do have a 64k chunk size so I will do: $ mkfs.xfs -d su=64k,sw=10 /dev/sdd Question: Does the above command assume I do not already have a partition created? I was http://www.fhgfs.com/wiki/wikka.php?wakka=PartitionAlignment reading here that the easiest way to acheive partition alignment is to create the file system directly on the storage device without any paritions - such as $ mkfs.xfs /dev/sdd (and your example above also hints at this) When I created my current partiton, I used the following commands: $ parted -a optimal /dev/sdd $ mklabel gpt $ mkpart primary 0 -0 $ q I would like to align the partiton as well, but I am not sure how to acheive this using parted. This will be the only partition on the LUN, so not sure if I even need to create one (although I do like to stay consistent with my other volumes). When printing the partition info with parted I see: # (parted) p Model: HP P2000 G3 iSCSI (scsi) Disk /dev/sdd: 4900GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 4900GB 4900GB xfs primary but from reading, I suspect the Sector size should be more like: (logical/physical): 512B/65536B. Any thoughts on partition alignment or other thoughts in general? Thank you. -- View this message in context: http://old.nabble.com/Optimal-XFS-formatting-options--tp33140169p33145068.html Sent from the Xfs - General mailing list archive at Nabble.com. _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
