As a test environment I will add 4 USB disks and use them as data drives for Swift.
$ sudo /sbin/hdparm -tT /dev/sdf
/dev/sdf:
Timing cached reads: 1842 MB in 2.00 seconds = 920.38 MB/sec
Timing buffered disk reads: 82 MB in 3.02 seconds = 27.11 MB/sec
The disks come partitioned and formatted, we'll change that.
I do not need partitions on the data disks, so I will force mkfs.xfs to ignore the partition table and format the raw disk insead:
$ sudo /sbin/mkfs.xfs -f \
-l internal=1,lazy-count=1 -d agcount=4 \
-b size=4096 -L data1 /dev/sdf
meta-data = /dev/sdf isize=256 agcount=4, agsize=183139584 blks
= sectsz=4096 attr=2, projid32bit=0
data = bsize=4096 blocks=732558336, imaxpct=5
= sunit=0 swidth=0 blks
naming = version 2 bsize=4096 ascii-ci=0
log = internal log bsize=4096 blocks=357694, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime = none extsz=4096 blocks=0, rtextents=0
Mount the filesystem somewhere (temporarily)
$ sudo mount -t xfs -o noatime,nodiratime,nodev,logbufs=8 -L data1 /mnt/sdf