On Wed, 2005-07-06 at 10:47 +0400, Brad Campbell wrote: > Ming Zhang wrote: > > Hi folks > > > > I am testing some HW performance with raid5 with 2.4.x kenrel. > > > > It is really troublesome every time I create a raid5, wait 4 hours for > > reconstruction, and then test some data and then recreate another one > > and wait again. I wonder if there is any hack or option available to > > create a raid5 without reconstruct the parity disk. I just have interest > > to test the performance so do not care about data correctness at this > > stage. > > I did a similar thing a while back. > I created the raid and waited for it to sync, I then make dd copies of the raid superblocks. > When I blew it up I just dd the clean superblocks back again (saved a 12 hour rebuild time) interesting to know about this. u just check the dmesg and see where is the sb and then u dd it out and dd back later? > > Having just thought about what you wrote, I guess you are building the raid in different > configurationes each time, so my method might not be good for you. > yes, i changed it many times. thx anyway! Ming > Regards, > Brad - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
