An elegant, accurate and thorough analysis. Thanks!
On 8/12/2012 8:02 AM, Alkis Georgopoulos wrote:
Στις 12/08/2012 12:24 πμ, ο/η John Hupp έγραψε:
But if nbdswapd.conf format mimics lts.conf, then when the instruction
says "size ... for each client," it may mean that nbdswapd.conf should
like more like:
[Default]
size=128
It's a shell-sourceable script, so no header should be put there, and
the variable name should be in CAPS, and no spaces should be put around
the '=' sign.
SIZE=128
Note that it's a sparse file, so that won't affect the initial, real
size, but only the maximum file size. And if the client really needs
>128 MB swap and tries to allocate it, it'll crash with SIZE=128.
So you don't really have a reason to specify the swap size unless
someone is trying to crash your server by abusing the swap export.
The edubuntu wiki page you mentioned needs to be updated for 12.04, e.g.
the NBD_PORT section is obsolete since NBD is now using the IANA
assigned port 10809 and name-based exports instead of port-based.
Finally, to verify if nbd swap is active, on the client, run:
ltsp-localapps xterm
and on that xterm,
cat /proc/swaps
free
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