> On Tue, Mar 11, 2014 at 09:55:02PM +1300, Mark Davies wrote: > > On Tuesday 11 March 2014 21:26:48 Robert Elz wrote: > > > Attachment order can't be controlled, but numbering can, but I agree, > > > there's no really good reason to do that unless you plan on moving > > > around devices (or adding some more) perhaps - and then you'd be better > > > to use GPT and wedges and wedge names to keep things constant, rather > > > than relying on wd numbering. > > > Indeed its constant disk names in the face of sometimes adding and > > removing some that I want so an example of how to do that with GPT and > > wedges would be instructive. I've read the manual pages a few times but > > haven't really ever got my head around wedges.
> I had never thought of using wedge names to keep things consistent in this > sort > of situation, that's really clever. > Wedges can be difficult to understand precisely because they are so abstract, > I > agree... they're like an abstraction of making partitions in general. Pretty > academic stuff, but super useful (it's why I keep coming back to NetBSD). > Just throwing it out there: an alternative approach is to use DragonFly, which > allows you to access disks by their serial number, which theoretically never > change. The disadvantage is DragonFly is not portable at all (i386 or x86_64 > only). > -Christian DragonFly can see my hard-disk partitions but can't mount any, for whatever reason. Also, DragonFly gives me no Internet access on my hardware. DragonFly file systems seem to be unmountable/unreadable from FreeBSD and NetBSD. Accessing GPT partitions is easier in Linux and even better in FreeBSD. Partitions can be labeled, nothing sneaky about partition/wedge numbering, and device nodes are created dynamically instead of having to be preallocated. Tom