> 0n Fri, May 23, 2008 at 08:19:03AM +1000, James C. McPherson wrote: > > >Rongsheng Fang wrote: > >> James, > >> > >> Thanks for you reply. We are currently using Veritas DMP for > >> multipathing. I understand MPxIO creates one psedo device to represent > >> all the paths to a physical disk/LUN. So with MPxIO, does it mean that > >> Solaris will just need to discover the MPxIO pseudo device indtead of > all > >> the paths a LUN thereforce make the boot process much shorter? > > > >Hi Rongshen, > >Yes, that is indeed the case. > > > >For Nevada we've made really big improvements in boot time > >for configurations such as yours - build 85 and later is > >looking really good in that area :-)
...some of the important improvements are not there until 87. > > So conceptually, having multipathing software setup will speed up bootstrap > time > significantly ? MPxIO helps reduce public namespace overhead since all paths to a device show up under a single public name. > And is this accross the board with all MP software or just a > MPxIO benefit ? This is just an mpxio benefit - in fact other MP software will make the problem worse since not only do you have public names for all paths to the device, you also typically have public names going into /devices/pseudo for third-party MP software. -Chris _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
