Re: csum failed during copy/compare

[Roman Mamedov <rm@romanrm.net>]

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On Mon, 10 Oct 2016 10:44:39 +0100
Martin Dev <mrturtledev@gmail.com> wrote:

> I work for system verification of SSDs and we've recently come up
> against an issue with BTRFS on Ubuntu 16.04

> This seems to be a recent change

...well, a change in what? 

If you really didn't change anything on your machines and the used process,
there is no reason for anything to start breaking, other than obvious hardware
issues from age/etc (likely not what's happening here).

So you most likely did change something yourself, and perhaps the change was
upgrading OS version, kernel version(!!!), or versions of software in general.

As such, the first suggestion would be go through the recent software updates
history, maybe even restore an OS image you used three months ago (if
available) and confirm that the problem doesn't occur there. After that it's a
process called bisecting, there are tools for that, but likely you don't even
need those yet, just carefully note when you got which upgrades, paying
highest attention to the kernel version, and note at which point the
corruptions start to occur.

> as the same process has been used for the last 2 years

-- 
With respect,
Roman

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