bug#48756: guix offload: error: corrupt input while restoring archive from #<closed: file 7f68866bf770>

bug#48756: guix offload: error: corrupt input while restoring archive from #<closed: file 7f68866bf770>

[Madhavan Krishnan]

Hi there, I am trying to follow this instruction [[info:guix#Daemon
Offload Setup][guix#Daemon Offload Setup]] with guix
6086e6ed1a038793e358becddded50d97593f691 on the host and build machine
to set up a offload build machine, and I end up with the error below.

~ $ guix offload test
guix offload: testing 1 build machines defined in '/etc/guix/machines.scm'...
guix offload: Guix is usable on 'build-machine' (test returned "/gnu/store/883yjkl46dxw9mzykykmbs0yzwyxm17z-test")
guix offload: 'build-machine' is running GNU Guile 3.0.5
guix offload: sending 1 store item (0 MiB) to 'build-machine'...
exporting path `/gnu/store/hqisv30c33ka8xascqh2x0lyqd0bp6z4-export-test'
guix offload: error: corrupt input while restoring archive from
#<closed: file 7f68866bf770>

Side note I tried testing if I could export manually to said build-machine,
which worked with out any problems.

~ $ guix archive --export -r emacs | ssh build-machine guix archive --import

and same goes for =guix offload status= which work fine as well.

Regards
-- 
Madhavan Krishnan

bug#48756: guix offload: error: corrupt input while restoring archive from #<closed: file 7f68866bf770>

[Ludovic Courtès]

Hi Madhavan,

Madhavan Krishnan <krishnanmadhavan000@gmail.com> skribis:

> Hi there, I am trying to follow this instruction [[info:guix#Daemon
> Offload Setup][guix#Daemon Offload Setup]] with guix
> 6086e6ed1a038793e358becddded50d97593f691 on the host and build machine
> to set up a offload build machine, and I end up with the error below.
>
> ~ $ guix offload test
> guix offload: testing 1 build machines defined in '/etc/guix/machines.scm'...
> guix offload: Guix is usable on 'build-machine' (test returned "/gnu/store/883yjkl46dxw9mzykykmbs0yzwyxm17z-test")
> guix offload: 'build-machine' is running GNU Guile 3.0.5
> guix offload: sending 1 store item (0 MiB) to 'build-machine'...
> exporting path `/gnu/store/hqisv30c33ka8xascqh2x0lyqd0bp6z4-export-test'
> guix offload: error: corrupt input while restoring archive from
> #<closed: file 7f68866bf770>

Does /etc/guix/signing-key.{pub,sec} exist on both machines?

You can generate it with ‘guix archive’ (info "(guix) Invoking guix
archive").

HTH,
Ludo’.

bug#48756: guix offload: error: corrupt input while restoring archive from #<closed: file 7f68866bf770>

[Madhavan Krishnan]

Hello Ludo,

> Does /etc/guix/signing-key.{pub,sec} exist on both machines?

> You can generate it with ‘guix archive’ (info "(guix) Invoking guix
> archive").

Yes, the files are generated by

   #+begin_example
sudo guix archieve --generate-key
   #+end_example
   
  /etc/guix/signing-key.pub
  /etc/guix/signing-key.sec

and send the =signing-key.pub= to the build machine.

#+begin_src shell
sudo guix archieve --authorize< master/build.txt
#+end_src

both ways master <-> build

Kindly let me know If am I missing something here obvious?

Thanks
-- 
Madhavan Krishnan

bug#48756: guix offload: error: corrupt input while restoring archive from #<closed: file 7f68866bf770>

[Ludovic Courtès]

Hi,

Madhavan Krishnan <krishnanmadhavan000@gmail.com> skribis:

>> Does /etc/guix/signing-key.{pub,sec} exist on both machines?
>
>> You can generate it with ‘guix archive’ (info "(guix) Invoking guix
>> archive").
>
> Yes, the files are generated by
>
>    #+begin_example
> sudo guix archieve --generate-key
>    #+end_example
>
>    
>   /etc/guix/signing-key.pub
>   /etc/guix/signing-key.sec
>
> and send the =signing-key.pub= to the build machine.
>
> #+begin_src shell
> sudo guix archieve --authorize< master/build.txt
> #+end_src
>
> both ways master <-> build

OK, so /etc/guix/acl exists on both machines, right?

Could you attach strace to sshd on the build machine:

  sudo strace -p $(pidof sshd) -f -o /tmp/sshd.log -s 500

and then run this on the head machine:

  sudo guix offload test

?

Looking at /tmp/sshd.log starting from the end might reveal an error
that occurs on the build machine.

You can share (part of) /tmp/sshd.log with me, but note that it may
contain sensitive material such as SSH secret keys or passwords.

Thanks,
Ludo’.

bug#48756: guix offload: error: corrupt input while restoring archive from #<closed: file 7f68866bf770>

[Ludovic Courtès]

Hi,

(+Cc: 48756@debbugs.gnu.org, so we record the end of the story.)

Madhavan Krishnan <krishnanmadhavan000@gmail.com> skribis:

> 89747 pipe([8, 10])                     = 0

> 89748 execve("/gnu/store/6rn4l3h0p9x0m615pp1ynlv9v0743kl3-guix-1.2.0/bin/guix", ["/gnu/store/6rn4l3h0p9x0m615pp1ynlv9v0743kl3-guix-1.2.0/bin/guix", "authenticate"], 0x7ffe0b69df60 /* 7 vars */) = 0

> 89748 dup2(10, 2)                       = 2
> 89748 dup2(2, 1)                        = 1

> 89747 write(12, "sign 25:/etc/guix/signing-key.sec 64:a8c094df57101bf8684c4afe31e58bc03bf6200a1d009e7c5bfe8bad0a48fa61\n", 102 <unfinished ...>

[...]

> 89748 write(2, "/gnu/store/pwcp239kjf7lnj5i4lkdzcfcxwcfyk72-bash-minimal-5.0.16/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.utf8)\n", 136) = 136


> 89747 read(8,  <unfinished ...>
> 89747 <... read resumed>"/", 1)         = 1

[...]

> 89747 write(2, "guix-daemon: nix/libutil/serialise.cc:15: virtual nix::BufferedSink::~BufferedSink(): Assertion `!bufPos' failed.\n", 114 <unfinished ...>

[...]

> 89747 --- SIGABRT {si_signo=SIGABRT, si_code=SI_TKILL, si_pid=89747, si_uid=0} ---

Now we know!  ‘guix-daemon’ hit the assertion failure above, which is a
bug.  That happens because while talking to the ‘guix authenticate’
subprocess, said process emits that warning:

  /gnu/store/…/bin/bash: warning: setlocale: LC_ALL: …

and guix-daemon reads the leading “/” and explodes, somehow.

However, it seems you’re running guix-daemon from Guix 1.2.0,
which is quite old, and chances are that the bug you hit has long been
fixed.

Could you try upgrading guix-daemon?

  https://guix.gnu.org/manual/en/html_node/Upgrading-Guix.html

Thanks,
Ludo’.

bug#48756: guix offload: error: corrupt input while restoring archive from #<closed: file 7f68866bf770>

[Madhavan Krishnan]

Many thanks for your time and effort in debugging this.

I can confirm this issue is resolved.

Regards
-- 
Madhavan Krishnan

bug#48756: guix offload: error: corrupt input while restoring archive from #<closed: file 7f68866bf770>

[Maxim Cournoyer]

Hello,

Madhavan Krishnan <krishnanmadhavan000@gmail.com> writes:

> Many thanks for your time and effort in debugging this.
>
> I can confirm this issue is resolved.
>
> Regards

Good to know!

Closing.

Maxim