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Re: more ram/swap on leisner, please?



2008/1/2, Bill Gatliff <bgat@billgatliff.com>:
> Lennert Buytenhek wrote:
> > On Wed, Jan 02, 2008 at 01:00:02PM -0600, Bill Gatliff wrote:
> >> Ok, I've set up a 5GB swap over NBD.  If the system reboots, it won't
> >> automagically reattach it.
> >>
> >> The kernel is NOT running the nbd swap patch, so I don't know if the
> >> system will deadlock under stress, or not...
> >
> > It most likely will...
> >
> Older kernels definitely would.  But the mailing lists aren't so clear
> about the current state of things, and I can't seem to find the patches
> either...

I run NDB swap on little arms and qemus routinely and have never had a
lockup despite stressing them. The trick is *not* to include
nbd-client's -swap flag, with which, if i remember correctly, it
doesn't work at all.

The other way is to create an ext2 in a file on an NFS-mounted volume,
loop-mount it on the ARM box, create a big file in it, mkswap and
swapon that.
A bit contorted but it was stable the one time I had to do that.

  M

Sorry about repetitions, Bill, thought I'd put this on list too.


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