Valeri Galtsev wrote: > On Fri, September 5, 2014 2:02 pm, Stephen Harris wrote: > >> For me I have things like >> sda1 >> sdb2 >> sdc3 >> sdd4 >> and I align the partitions to the physical slot. > > What do you do when it comes to 5,... (as MBR only supports 4 primary > partitions ;-) ? Then you make something an extended partition. > >> This makes it easier to see what is the failed disk; "sdc3 has fallen >> out of the array; that's the disk in slot 3". >> >> Because today's sdc may be tomorrow's sdf depending on any additional >> disks that have been added or kernel device discover order changes or >> whatever. > > That's why I like the [block] device naming strictly derived from topology > of machine (e.g. FreeBSD does it that way), then you know, which physical > drive (or other block device, e.g. attached hardware RAID) a device > /dev/da[x] is. I remember hassle when Linux switched numbering of network How? I've had them move around on a non-RAID m/b (for example, a drive fails, and you put one in an unused bay, and then you've got, say, sda, sdc and sdd, no sdb, until reboot), and even then, it's *still* a guessing game as to whether hot-swap bay upper left, lower left, upper right lower right are sda, sdb, sdc, sdd, or sda, sdc, sdb, sdd, or, for the fun one, lower right is sda.... mark