pjwelsh wrote: > Not to nitpick toooo much, I had the opportunity to play follow along > with this page and it is still needs help: > "You divide the chunk size by the block size..." BUT then has "(chunk > size * block size)". The "*" should be "/". > Oops I will correct that, I should of left to editing it the day after when I wasn't so tired. :-) > The example for RAID 5 is fine, but the RAID 10 example sentence may be > better after the code example as to not confuse a reader for which of > the 2 options the code is for. > I realized later I messed the RAID10 example up, I intend to edit it some more and clean up more sentence fragments. I realize it's still not very clear. > The mkfs.ext3 command exampled is not supported in CentOS 4 or 5 . The > "-E stripe-width=48" is not allowed according the "man mkfs.ext3". > It's listed in my man page for e2fsprogs 1.41.3. maybe CentOS has a much older version? > If examples of performance improvements could be added like: > > #sync ; time dd if=/dev/sdc1 of=/dev/null bs=1M count=20480 > > (default mkfs.ext) > 221474836480 bytes (21 GB) copied, 126.272 seconds, 170 MB/s > real 2m6.275s > > (stride tweak only) > 21474836480 bytes (21 GB) copied, 107.209 seconds, 200 MB/s > real 1m47.212s > > > I didn't plan to but I can test a striped LV in LVM2 for performance. > pjwelsh > > Regards, Danny Rawlins
