Problem with unison-jz

micksulley · December 9, 2020, 10:23am

I have installed unison-jz via snap on a Raspberry Pi and UnbuntuServer 20.04 and I have hit a problem. I reported on the unison forum but the feeling was that it is a snap issue. Here are the details - I went through the tests in the unison manual, both worked fine for local tests but when I try the remote tests I see many warning messages but it seems to work from Pi to UbuntuServer, but UbuntuServer to Pi fails

pi@pi-test:~ $ ssh mick@192.168.1.16 unison-jz.unison -version mick@192.168.1.16’s password: bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8) /bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8) ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Documents’: No such file or directory ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Desktop’: No such file or directory ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Downloads’: No such file or directory ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Music’: No such file or directory ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Pictures’: No such file or directory ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Videos’: No such file or directory ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Templates’: No such file or directory unison version 2.51.2 (ocaml 4.02.3) pi@pi-test:~ $

mick@vb-ubuntu:~$ ssh pi@pi-test-wifi unison-jz.unison -version pi@pi-test-wifi’s password: bash: unison-jz.unison: command not found mick@vb-ubuntu:~$

But it is installed on the Pi -

pi@pi-test:~ $ unison-jz.unison -version ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. /bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8) ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored. unison version 2.51.2 (ocaml 4.02.3) pi@pi-test:~ $

Any suggestions what the problem might be?

Thanks

Mick

ogra · December 9, 2020, 10:35am

this is:

use /snap/bin/unison-jz.unison when using ssh or snap run unison-jz.unison (both should work around the PATH missing /snap/bin)

micksulley · December 9, 2020, 9:39pm

Thanks for the reply, that has got me a bit further forward, however it fails at the next step. I have tried from Pi to server and from server to Pi, but both fail with different error messages -

pi@pi-test:~ $ /snap/bin/unison-jz.unison testu/ ssh://mick@192.168.1.16//home/mick/testu/
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
Unison 2.51.2 (ocaml 4.02.3): Contacting server…
ERROR: ld.so: object ‘/usr/lib/arm-linux-gnueabihf/libarmmem-${PLATFORM}.so’ from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
mick@192.168.1.16’s password:
bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
bash: unison: command not found
Fatal error: Lost connection with the server
pi@pi-test:~ $

mick@vb-ubuntu:~$ /snap/bin/unison-jz.unison testu ssh://pi@192.168.1.102//home/pi/mick/testu
ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Documents’: No such file or directory
ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Desktop’: No such file or directory
ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Downloads’: No such file or directory
ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Music’: No such file or directory
ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Pictures’: No such file or directory
ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Videos’: No such file or directory
ln: failed to create symbolic link ‘/home/mick/snap/unison-jz/19/snap/unison-jz/19/Templates’: No such file or directory
Unison 2.51.2 (ocaml 4.02.3): Contacting server…
Fatal error: Lost connection with the server
mick@vb-ubuntu:~$

whoneyc · March 22, 2022, 4:23pm

Necro-post

Was this issue ever resolved? I’m experiencing the same deluge of ld.so problems on my Raspberry Pi using unison-jz.

micksulley · March 22, 2022, 9:04pm

Sorry, I don’t know. I gave up on snap.

Mick

whoneyc · March 23, 2022, 3:49pm

Thanks for following up, Mick. I feel that way too sometimes.

ogra · March 23, 2022, 4:11pm

the libarmmem warnings are harmless and are caused by a gross LD_PRELOAD hack raspbian applies to their images, you can just ignore them, (or fix /etc/ld.so.preload to not forcefully pre-load that lib for every binary), they will not have any impact on functionality …

whoneyc · March 23, 2022, 8:57pm

ogra, the problems persisted beyond the stated problem. Hence why Mick stated “got me a bit further forward, however it fails at the next step”, which was my observation too. There seems to be something malformed for Raspberry Pi in this Snap package which is beyond my pay grade or time commitment. It appears to work correctly on my Ubuntu box.

Rather than delve into the headaches which are Snaps, I was able to get Unison working on Raspberry Pi by using apt for ocaml versions and compiling Unison from source.