Re: LTSP fat client freeze

On Mon, Feb 25, 2019 at 3:47 PM Maxime Accadia <
[email protected]> wrote:

> Hi,
>
> Just to share an experience. We had to debug a freezing on fat clients :
> on 18.04, Gnome was freezing after 10min inactivity.
>
> Usually, freezing is caused when NBD connection is lost ; it wasn't the
> case.
>
> Relation to inactivity suggested an issue with suspend / screensaver. So
> we disabled suspend, as did Alkis in a recent commit (
> https://git.launchpad.net/ltsp/commit/?id=dc8fb26f26989f28c36ae69b1684adc63afb1640).
> The issue remained.
>
> Nothing in logs, both on client and server. It turned out it was sshfs
> hanging ; probably due to a timeout on a stateful firewall. When sshfs
> hangs in this way, there is no error.
>
> The solution was to use LDM_SSHOPTIONS="-o ServerAliveInterval=30" in
> lts.conf as recommended here :
> https://github.com/smheidrich/sshfs/blob/master/sshfs.rst#sshfs-hangs


Do you think this should be a default LDM configuration?
Or it just happens in certain cases, and anyway it is just a workaround and
some day may not be needed?

Thanks,
Dashamir


>
>
> Best,
>
> Maxime
>
>
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