On Tue, 2007-09-25 at 08:52 +0100, Nuno Fernandes wrote: > On Tuesday 25 September 2007 06:54:39 Hannes Reinecke wrote: > > Nuno Fernandes wrote: > > > hello, > > > > > > Just a question: > > > > > > With recent support for rdac hardware handler in kernel 2.6.23-rc7, what > > > configuration should be in storage DS4700? AVT (Automatic Volume > > > transfer) turned on or off? > > > > Off. AVT is the acronym for 'Automated Volume Transfer', ie the array tries > > to transfer the volumes from one controller to the other automatically. > > > > > When it's turned on, luns keep on jumping from controller to controller.. > > > > Indeed. That's to be expected. > > > > As a rule: > > > > - With rdac hardware handler: AVT off > I'm in the process of testing avt in the kernel. > > > - Without hardware handler: AVT on > With this situation i don't have any point of failure but the lun keeps on > jumping (because of the alive path check of multipathd) and the performance > is awfull. Hmm... Did you have the configuration entries in multipath.conf (same as that of the RDAC case - with the exception of the hardware handler) ? > > Best regards > Nuno Fernandes > > > > > Cheers, > > > > Hannes > > > -- > dm-devel mailing list > dm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/dm-devel -- ---------------------------------------------------------------------- Chandra Seetharaman | Be careful what you choose.... - sekharan@xxxxxxxxxx | .......you may get it. ---------------------------------------------------------------------- -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
