Alan Bartlett wrote: ... > Pedantically and ignoring the RAID aspect, just looking at the > equations scientifically, I would say that only the first one is wrong > as (64K / 4K) = 16, not 16K. It should be expressed as (64 / 4)K = > 16K. > > The other two lines do read correctly but, in the spirit of > conformity, I would suggest (3 * 16)K = 48K and (16 + 16)K = 32K, > respectively. > > Perhaps the original author would care to comment and adjust where necessary? > > Alan. Direct link is http://wiki.centos.org/HowTos/Disk_Optimization to save others from hunting through the top HowTos page. My pedantic sensibilities would render the equations as: (64K / 4K) = 16 (3 * 16) = 48 The first would be consistent with the usage in item 9 in http://tldp.org/HOWTO/Software-RAID-0.4x-HOWTO-8.html and "man mke2fs": stride=stripe-size Configure the filesystem for a RAID array with stripe-size filesystem blocks per stripe. but the above points up another error on the Wiki page. There is no "-E stripe-width" parameter to mkfs.ext3/mke2fs. I'd naively think it should be "-E stride=48", but the conclusion is still that the original author needs to respond, or failing that somebody else needs to fix the errors. Phil
