[Bug 593227] [NEW] feature request: add a root-path parameter

[Alkis Georgopoulos]

Στις 15-06-2010, ημέρα Τρι, και ώρα 10:26 +0000, ο/η Wouter Verhelst
έγραψε:
> Having said that, I don't think it would hurt to support the ltsp_nbd
> syntax as an alternative, provided it does not break anything in my
> current scripts. I would need a pointer to how that works then, however.

I thought it'd be better if I filed a separate feature request for that:
https://bugs.launchpad.net/ubuntu/+source/nbd/+bug/594595

Kind regards,
Alkis

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feature request: add a root-path parameter
https://bugs.launchpad.net/bugs/593227
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Status in “ltsp” package in Ubuntu: New
Status in “nbd” package in Ubuntu: New

Bug description:
Currently nbd-server and nbd-client communicate using a different port for each image. So if e.g. an LTSP admin wants to use a chroot for nvidia-based clients and a chroot for the rest of his clients, he'd need to use two ports. And he wanted nbd swapping a third port would be needed.

This is inconvenient and makes IANA applications to standarize the nbd port impossible.
It'd be better if nbd-client supported two additional parameters, to be sent and processed by nbd-server at the negotiation stage:
 * A -path=/path/to/desired/root option (which of course the server could ignore, if it wasn't in a pool of allowed paths), and
 * A -swap=<requested size> option (to replace the current -swap option). If the server configuration allowed it, nbd-server (or some callback scripts) would create an appropriate swap flie of that size for the client.