On Friday June 28, bo@sosnetwork.net wrote: > Neil, > > > > I saw some bug fixes and improvement on this topic from > > > http://marc.theaimsgroup.com/?l=linux-kernel&m=100876771508736&w=2 > > > > According to log file(from above infor), it cleaned up many things related > with RESYNC, and had > some bug fixes. He mentioned it goes to linux2.5.x. > > I think we should have the same changes to Linux 2.4.x, don't you? I don't think they were significant bugs. resync works quite well in 2.4. Well enough that I don't think it should be fiddled with too much. > If so which release should include them? Any problem to apply this patch > to my 2.4.5? They won't work in 2.4 as they stand. There were some major changes to the block device layer in 2.5 and these patches require (and are required by) these changes. > > How about your patches(23+)? Can I apply them to my lINUX2.4.5? No. Same reason. I might back-port the more significant ones, but much of it was code-cleanliness rather than bug fixes. > > I already use 100M for speed _limit_min, 300M for speed _limit_max. > I could not notice a big difference from changing this values. > > Q1: This value go back to the default at boot/reset, Should I modify to > change this > default value in "md.c"? By any config parameter? Don't modify md.c. Just echo a number to the /proc file in a boot script. > > Q2: >hdparm -tT /dev/hdxx > Timing buffer-cache reads: 52.24 MB/s > Timing buffered disk reads: 24.43 MB/s > > The "resync" speed on the raid1 device with hdxx: 25.4MB/s. > > Do you think this speed is reasonable enough? You couldn't ask for better. This speed looks fine. NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
