On Wed, Dec 08, 2010 at 08:32:28PM +0100, Abel Coto wrote: > 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 No, you've read something that is at least 5 years out of date. Just use the defaults - they are already optimised for best performance in most circumstances. > I have read that too much allocation groups are bad , but i don't now if 416 > are too much for a 830 GB partition (and shoukd use 208 to 300) or not. Any more than 4 AGs on a single spindle is bad for performance. AGs can be up to 1TB in size, so you're going to get 4 as the default for your 830GB partition. > I will mount the partition with logbufs=8. (i use a 128m journal and > logbufs=8 to improve a bit deleting performance). I will perhaps use noatime > too ,but i have to see if my backup app, uses atime or not. logbufs=8 is the default. Also, the default atime option is relatime which has pretty much zero compareeed to noatime, so once again just use the defaults. > for this partition , that will handle mostly big files (500 MB to 2-3 GB at > least) what mkfs.xfs options should i use ? The defaults. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
