Hi, there seems to be little to no consensus on how the device naming of multipathed devices should look like across distributions: The current kpartx udev rule in the upstream source (the patch came from Hannes) sets the device naming to: /dev/mapper/<wwid>-part[0-9]+ so I assume this is what SuSE uses (or intends to use in the future). Redhat/Fedora seems to skip the '-p -part' so partitions look like: /dev/mapper/<path>p?[0-9]+. The 'p' being used if <path> already ends in a number. No distro seems to use user_friendly_names=yes by default (in which case <...> would become mpath[0-9]+). And there's /dev/disk/by-name/ of course which would use the WWID if alias wasn't set. All this gives bootloaders like grub and installers a hard time (every distro seems to have similar patches to grub-install, etc.). I wonder if it wouldn't make sense to adopt a common naming scheme across distributions and probably reserve the whole /dev/mapper/mpath[0-9]+p[0-9]+ and /dev/mapper/mpath[0-9]-part[0-9]+ namespaces for multipath devices? Otherwise it might become increasingly harder for tools like parted to find out the partitions of a device (without the almost very same set of patches that every distro carries around). Any thoughts? Cheers, -- Guido -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
