Re: [iPAQ] Wish List

On Wed, 11 Oct 2000, Derek Glidden wrote:

> Carl Worth wrote:
> >
> > 2) Since I keep running out of memory during big compiles I've
> > tried to add some swap space. The swapon man pages say,
> > "Swap over NFS may not work" and I'm beginning to agree
> > there. If I do the mkswap from the iPAQ I always get
> > "invalid swap file" from swapon. If I run mkswap from my
> > NFS server, then the swapon succeeds, but I get periodic
> > messages saying something like "rw_swap: invalid swap
> > file", (can't remember the exact message) and processes
> > start dying. Any hints from the skiffcluster maintainers
> > about how I can get this to work?
>
> I've successfully used the nbd device to get network swap devices
> working on low-memory diskless boot boxen before. This is with
> Linux/i386 though, and I don't know if the nbd drivers work on the iPAQ
> Linux port. Also, the very scarce documentation I've ever been able to
> dig up say that swap-over-nbd isn't supposed to actually work, although
> it's worked ok for me in practice, and in exactly the kinds of
> situations you're describing: compiling large applications that need
> more than the physical memory to compile.
>
> I've also seen some reference not-too-long-ago from someone who was
> working on some kind of "nbd mark 2" driver which was supposed to be
> "nbd done 'correctly'", I assume that would mean it should correctly
> handle stuff like swap and network latency and deal with nbd servers
> that have gone away and all that, but I don't remember where I saw it...
>
>

I think this http://www.it.uc3m.es/~ptb/nbd/ is what you mean? Not sure...

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