On Nov 27, 2007 7:55 PM, Székelyi Szabolcs <cc@xxxxxxxxx> wrote: > Krishna Srinivas wrote: > > On Nov 16, 2007 11:48 PM, Székelyi Szabolcs <cc@xxxxxxxxx> wrote: > >> Krishna Srinivas wrote: > >>> "option read-node <sobvol>" will read from that particular subvol > >>> (this will help when that subvol is local storage) > >>> "option read-node *" will load balance from all children. > >>> So option is either * or one of the subvols. > >>> default is "option read-node *" > >>> What do you think about it? > >> > >> What about explicitly listing the subvolumes to perform load-balancing > >> between? For example, "option read-nodes child1 child3" could cause AFR > >> to load-balance reads between child1 and child3, while writing to all > >> its children (child[1-3], say). The default option could be to read from > >> the first child. "option read-nodes *" could still mean to use all > >> subvolumes. > > > > We thought about "option read-node child1,child3" but this wont really > > be used in the sense that users would want to read either from local > > storage or all the children. But there might be a case where one of the > > sobvols might be a low end machine where we dont want to schedule > > reads. Still thinking if it is worth implementing this particular feature. > > Consider the situation when I want to have 4-5 local (ie. on-site) > mirrors for (read) performance, and also a few remote (ie. off-site, on > the other end of a lower bandwidth link) for backup. This is not an > unusual setup. In that case let me put it under TODO list :-) Krishna
