> > One of my worry is that /var/lib/multipath/bindings is not available in > > early userspace. Is this taken care of. Also remember not relying on > > hotplug to execute multipath in early userspace is a redhat choice. > > Others strategy may differ. > > To make this work seamlessly with early userspace, You would need to add > the correct /var/lib/multipath/bindings file to the initrd. The easiest work > around to to simply stick the alias for that device in /etc/multipath.conf. > > To make this work without editing the initrd or forcing people to have > aliases in their config files, you would need to change multipath behavior. > Currently, if multipath finds a device with the same wwid and a different > alias, it removes the device and recreates it. If it simply just left the > device with the old name, then you would not get the benefit of user friendly > names for devices that were started in early userspace, but you would not > be any worse off than before. (Well, not quite. A binding would exist for the > device in the bindings file, and if on some other boot, that multipath wasn't > created in early userspace, when it got created it would use the name from > the bindings file). This method would also require a command line option to > override the "user_friendly_names" config file option in early userspace. > ok, let me know what you think of the following early userspace scenario sketch. It aleviates the bindings sync issues between early and normal userspace. Pre-requisites : - no multipath config or binding files packaged in early userspace - move bindings from /var to /etc early userspace trace : - load storage drivers - path nodes are created - lookup the rootdev wwid in a config file created at system install time or by init{ramfs,rd} rebuild script - exec "multipath $wwid" : the scope limiting is the trick as only root dev map gets created. All defaults will apply : failover policy, etc ... - mount /dev/mapper/$wwid - pump config and bindings in early userspace namespace - umount root fs - exec "multipath $wwid" again - deduce $alias from {bindings file & $wwid} - mount /dev/mapper/$alias Regards, cvaroqui -- dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel