Re: Deprecating NBD in favor of squashfs-over-NFS

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Hi,

On Fri, May 17, 2019 at 10:52:46AM +0300, Alkis Georgopoulos wrote:
> NBD is used for the LTSP client root file system, /.
> SSHFS is used for /home and is unrelated to this discussion.
> 
> NBD has some issues; instability; no reconnections; can't survive server
> reboots; difficult configuration; etc.
> 
> In the past, NBD replaced NFS in LTSP because the squashfs image has less
> metadata and is compressed, so it's a lot faster than an uncompressed
> directory.
> 
> The best of both worlds is to export the squashfs image over NFS.
> So, the server will export /opt/ltsp/images via NFS,
> and the clients will connect to /opt/ltsp/images/amd64.img,
> and "loop-mount" it as their root file system.
> To be clear: you'll still need to run `ltsp-update-image` like before.
> 
> LTSP5 already supports this; we just haven't tried it in production a lot.

I proposed a patch for this on Launchpad, to generate boot entries for
this and make it selectable as a boot method which I called NFSI:

 https://code.launchpad.net/~natureshadow/ltsp/+git/ltsp/+merge/368453

Cheers,
Nik
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