Re: problems with btrfs filesystem loading

[Roman Mamedov <rm@romanrm.net>]

On Thu, 29 Dec 2016 16:42:09 +0100
Michał Zegan <webczat_200@poczta.onet.pl> wrote:

> I have odroid c2, processor architecture aarch64, linux kernel from
> master as of today from http://github.com/torwalds/linux.git.
> It seems that the btrfs module cannot be loaded. The only thing that
> happens is that after modprobe i see:
> modprobe: can't load module btrfs (kernel/fs/btrfs/btrfs.ko.gz): unknown
> symbol in module, or unknown parameter
> No errors in dmesg, like I have ignore_loglevel in kernel cmdline and no
> logs in console appear except logs for loading dependencies like xor
> module, but that is probably not important.
> The kernel has been recompiled few minutes ago from scratch, the only
> thing left was .config file. What is that? other modules load correctly
> from what I can see.

In the past there's been some trouble with crc32 dependencies:
https://www.spinics.net/lists/linux-btrfs/msg32104.html
Not sure if that's relevant anymore, but in any case, check if you have
crc32-related stuff either built-in or compiled as modules, if latter, try
loading those before btrfs (/lib/modules/*/kernel/crypto/crc32*)

-- 
With respect,
Roman