[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Tagged paging area?

> This sounds just perfect.

Good.  It's done.

> > > Or should I just convert to disklabel?
> > 
> > I don't understand how that's relevant.
> Suppose I have these logical partitions:
> hd0s5 = some crap
> hd0s6 = paging
> hd0s7 = important filesystem
> and then I remove hd0s5.  Now the paging area becomes hd0s5 and
> the important filesystem becomes hd0s6.  If I still have
> paging=hd0s6 in some configuration file, I lose.

Ah, I see what you mean.  So don't do that then.

> I was under the impression that BSD-style disklabels could avoid
> this by letting me tag partitions so that their letters don't
> change if I add or remove other ones.  Don't they work that way,
> then?

Well, yes they do, and so do MSDOS (linux) partitions.  It sounds like you
are just using some really annoying tool to frob your partition table.  

In both formats, there are numbered slots and each slot specifies a
physical location and size on the disk.  There is no requirement that the
physical spans of consecutively numbered partitions must be laid out

With tools like fdisk, you frob individual partitions by number, so no
renumbering happens unless you do it yourself.  With cfdisk, you add and
delete partitions and it numbers them automagically to be consecutive, but
it leaves unused gaps rather than renumbering when you delete a partition.
I guess if you split one partition into two, it will renumber the later

Hmm, but I think BSD systems might check the type field in the disklabel
and refuse to swap on partitions not marked for swap (which is a much more
intelligent technique that doesn't eat a page on disk).

Reply to: