On Wed, 11 Feb 2009, mike dentifrice wrote:
Justin Piszcz a dit:
mkfs.xfs will auto-optimize for software-raid arrays for the most
part, with HW raid on a 3ware controller, tweaking mkfs.xfs does not
help very much. with SW raid, at least for raid1 - I use the
Thanks for your reply. However, I wonder about the defaults:
xfs_info /dev/md1 | grep -E '(sunit|swidth)'
sunit=0 swidth=0 blks, unwritten=1
sectsz=512 sunit=0 blks
What's the consequence of 0 values in this case?
mike dentifrice <fluor@xxxxxxxxxxx>
# xfs_info /dev/md2 | grep -E '(sunit|swidth)'
= sunit=0 swidth=0 blks
= sectsz=512 sunit=0 blks, lazy-count=0
Mine is similar, I guess you would need to benchmark to find out if you
were worried about it. I ran multiple copies from a RAID1 (dual raptors)
and was able to get the performance of both of the drives combine, so I am
not really worried about this setting.