bug#58290: guile ssh error on guix deploy

["Ludovic Courtès" <ludo@gnu.org>]

Hi!

Andrew Tropin <andrew@trop.in> skribis:

> From time to time I get the following error, the only thing I change is
> IPv6 config in static-networking service.  Sometimes it fails, but after
> a few more attempts with the same config it deploys sucessfully.
>
> -*- mode: compilation; default-directory: "~/work/abcdw/trop.in/" -*-
> Compilation started at Tue Oct  4 14:19:46
>
> make -k deploy-pinky
> guix deploy ./guix/pinky.scm

[...]

> In guix/ssh.scm:
>     376:2  7 (send-files #<store-connection 256.99 7f7d1207b3c0> _ # …)
>     222:5  6 (remote-run (begin (use-modules (guix) (srfi #) # #) …) #)
> In ssh/popen.scm:
>      64:4  5 (open-remote-pipe* _ "r+" _ . _)
> In unknown file:
>            4 (channel-open-session #<input-output: channel (closed) …>)
> In ice-9/boot-9.scm:
>   1685:16  3 (raise-exception _ #:continuable? _)
>   1683:16  2 (raise-exception _ #:continuable? _)
>   1685:16  1 (raise-exception _ #:continuable? _)
>   1685:16  0 (raise-exception _ #:continuable? _)
>
> ice-9/boot-9.scm:1685:16: In procedure raise-exception:
> Throw to key `guile-ssh-error' with args `("channel-open-session" "Channel opening failure: channel 67 error (2) open failed" #<input-output: channel (closed) 7f7d1af9e140> #f)'.

Are there any hints from sshd in the /var/log/messages of that machine
as to why the connection was closed?

Thanks,
Ludo’.