Abel Coto put forth on 12/8/2010 1:32 PM: > I want to create a 830 GB partition, to mount as /home in my Centos 5.4 > workstation. > > Actually i have /home not mounted ,so i would have to create the new > partition in the lvm,format it and use rsync to copy /home directory to it. > > for a 830 GB partition that i will use to save my data in general and also > 3d / CG projects and renders once finished them what agcount value should be > used. I have read that mkfs default option creates 1 allocation group each > 4G , so i understand that for a 830 GB partition agcount should be 208. > > It is this correct ? No that's not correct. > so i would use for format the partition > > mkfs.xfs -l lazy-count=1,version=2,size=128m -i attr=2 -d agcount=208 -L > VolumeName <dev> Do not do this! If this filesystem will reside on a single physical disk, format the partition using the XFS defaults. agcount, and most of the other options, exists for optimizing parallel performance on striped RAID or SSD storage systems that have lots of IOPS performance. These options are _not_ for use on single disk drives. AG count is related to number of spindles and/or IOPs throughput, not the size of the partition. The mkfs.xfs default for a single drive filesystem is 4 AGs. If you specify a value greater than 4 your performance will suffer. If you specify 208 AGs it may likely be little faster than a floppy disk drive. -- Stan _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
