On Thursday March 5, madduck@xxxxxxxxxx wrote: > also sprach Neil Brown <neilb@xxxxxxx> [2009.03.05.0349 +0100]: > > I'm in favour of deprecating it. Whenever I hear of people using it I > > suggest dm-multipath, but there could people I don't here about. > > I think the upcoming mdadm-3.0 will need a compile-time option to > > enable multipath, so people will only get it if they really really > > want it. > > How do you propose a distro to deal with this? Keep it enabled for > a certain time (with a deprecation warning?) and then just to close > the doors on users who still need it? > > How long will you support it after deprecation? > > I understand that dm-multipath is more favourable, but unless > there's a riskless way to convert mdadm multipath into dm-multipath > on old systems, I don't think we have the option of deprecating it, > unless deprecation lasts for several years. Always the practical one, aren't you :-) I wonder how hard it would be to get mdadm to assemble a multipath using the 'dm' code rather than the 'md' code.... Or to get the md layer in the kernel to hook in to the dm multipath implementation. I think it is probably worth putting in a printk now to say "You should probably be using dm-multipath". But we probably do need to leave the code there for a while longer.. NeilBrown -- 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
