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From: Martin Steigerwald <martin@lichtvoll.de>
To: Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Subject: Re: Unrecoverable fs corruption?
Date: Sun, 03 Jan 2016 17:24:55 +0100
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Am Sonntag, 3. Januar 2016, 15:53:56 CET schrieben Sie:
> [1] Fat-fingering a deletion:  My own brown-bag "I became an admin that 
> day" case was running a script, unfortunately as root, that I was 
> debugging, where I did an rm -rf $somevar/*, with $somevar assigned 
> earlier, only either the somevar in the assignment or the somevar in the 
> rm line was typoed, so the var ended up empty and the command ended up as 
> rm -rf /*. ...
> 
> I was *SO* glad I had a backup, not just a raid1, that day!

Epic.

Thats the one case GNU rm doesn´t cover yet.

It refuses to rm -rf . or rm -rf .. and rm -rf / (unless you give special 
argument, but there is not much it can do about rm -r /*, as the shell expands 
this before handing it to the command.

Thanks,
-- 
Martin