[LUNA] Upgrading to CentOS 6.n

[William A. Mahaffey III]

I have an older server running FC14-64-bit which I am planning to 
upgrade to CentOS6.n. Due to excruciatingly poor decision making on my 
part in the original install, I will also be re-partitioning in the 
process :-). I have a kickstart file setup & ostensibly ready to go. For 
now it sets up 4 partitions per drive, boot, swap, root & home. Boot, 
root & home will be LVM'ed into larger 'partitions' & then the install 
will proceed. I am planning on a RAID1 LVM for /boot, RAID10 for root, & 
RAID0 for /home. I am also considering RAID5 for /home. I have another 
machine running NetBSD 6.1.5 with a similar disk-partition (actually 
slice) arrangement, with a RAID5 /home, 4 data slices, 1 parity, 1 
hot-swap/spare. Despite my best efforts, I have misaligned 
disk-blocks/RAID elements/FS blocks & resulting horribly slow I/O :-/. I 
want to avoid that w/ this install :-). Will the LVM RAID5 kickstart 
setup 'do the right thing' WRT disk-block/LV alignment by itself, or are 
there any gotchas (hopefully w/ work-arounds :-) ) for a RAID 5 setup ? 
I am comfortable w/ a RAID0 here, everything on that 'partition' will be 
backed up elsewhere across my LAN, but I wouldn't mind the extra 
robustness WRT disk failure of a RAID5 vs. RAID0, I just don't want the 
performance hit of a fubar'ed install :-/ .... TIA for *ANY* 
advice/clues/URL's/etc. on this matter, & have a good one ....


-- 

	William A. Mahaffey III

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	"The M1 Garand is without doubt the finest implement of war
	 ever devised by man."
                            -- Gen. George S. Patton Jr.