Hey I need help with initializing a remote node on raspberry pi. I posted this on the #monero channel as well but I think this channel is more appropriate

I tried running monerod using the Armv7 but it doesn't seem to work. It keeps crashing saying "Bus error". Anyone knows why?

<k​4r4b3y:karapara.net> Armv7 is currently unofficially not supported.

<k​4r4b3y:karapara.net> I remember trying monerod on my armv7 CPU smartphone and single board computer

<k​4r4b3y:karapara.net> on both platforms, monerod has crashed, with the same error as your, "Bus error."

<k​4r4b3y:karapara.net> I opened some github issues last year on this topic. We worked on the issue comments with luigi and hyc, but the result lead us nowhere.

Ahh ic ic, all good then. I'll try to find another way around it. My raspi actually has ARMv8 but idk why it couldn't run it. Everytime I run it, it keeps saying "No files such file or directory" which then lead me to ARMv7. Anyways thanks m-relay!

<k​4r4b3y:karapara.net> what is the model of your raspi? 3B?

Nope raspberry pi 4 model b

<k​4r4b3y:karapara.net> why don't you try the armv8?

I did, couldn't run it. It keeps on saying "No such files or directory"

food4lyfe: what's the output of "file monerod"

monerod: ELF 64-bit LSB pie executable, ARM aarch64, version 1 (GNU/Linux), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.7.0, BuildID[sha1]=b29c5e0b2e68458d0b5ba3504c65c8bee4270d2d, with debug_info, not stripped

do you have at /lib/ld-linux-aarch64.so.1 ?

a file at

No

Bus error means unaligned access or access to unmapped virtual memory. Probably the latter, as it tends to happen to LMDB in the face of corrupted database.

you need it to run the program

<t​obtoht:monero.social> food4lyfe: install the 64-bit version of the OS

I think that's your problem

m-relay: I think I installed the 64-bit version. when using uname -a, it printed out aarch64

seems you have a 64bit kernel but 32bit OS according to that link, you need a 64bit OS

<t​obtoht:monero.social> raspberrypi.com/software/operating-systems scroll down to 64-bit

selsta: Yeah it seems like thats the problem. I'll reinstall the OS, I'll follow up after if there's anymore issues. Thanks selsta!

m-relay: Yup, thanks for the link. I'll try that one. I'll let you know after I reinstalled it. Thanks for helping out m-relay

<0​xfffc:matrix.org> if you have objdump in that machine, "arm-none-linux-gnueabi-objdump -x monerod | grep NEEDED"

<0​xfffc:matrix.org> then investigate .so files with readelf --headers *.so

<0​xfffc:matrix.org> SIGBUS is really a different/deeper version of SIGSEGV.

m-relay: I'm not familiar with objdump. I do have objdump but not the one you are referring to. Do you know which package has that binary?

yeah, samething. "objdump -x monerod | grep NEEDED"

objdump gives out "objdump: monerod: file format not recognized"

now do readelf --headers monerod

as selsta mentioned, I expect something seriously wrong with that installation.

appears that you don't have a correct monerod file. elf headers are messed up. objdump should've worked. Anyway, readelf will tell more about the issue.

it's not the file

oh I misread, ignore me

Yeah, readelf shows that in the program headers section it requires /lib/ld-linux-aarch64.so.1. Currently reinstalling it to the 64-bit OS version

anyway, the root is the one selsta mentioned, 64bit 32bit mismatch

s/root/root issue/

I have to go. But thanks xFFFC0000, m-relay, selsta for the help

If there are more issues with it, I'll ask it here :D

unmapped memory gets a SIGSEGV. SIGBUS almost always means unaligned access.

Pretty sure LMDB hits SIGBUS when reading data from "the LMDB database" but off the file extents, which happens on corrupt data.