linux-kernel - Re: lz4hc compression in UBIFS?

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Message-Id: <300471382514034@web11h.yandex.ru>
Date:	Wed, 23 Oct 2013 11:40:34 +0400
From:	Konstantin Tokarev <annulen@...dex.ru>
To:	Brent Taylor <motobud@...il.com>
Cc:	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	Artem Bityutskiy <dedekind1@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
Subject: Re: lz4hc compression in UBIFS?



23.10.2013, 09:26, "Brent Taylor" <motobud@...il.com>:
> Konstantin,
>    I did my testing with data from /dev/urandom (which I now realize
> wasn't the best choice of data source), but if I use /dev/zero (which
> actually causes data compression to occur), the decompressor fails.  I
> don't know the internal workings of the lz4hc compressor or the lz4
> decompressor.  I couldn't find any examples of any code in the kernel
> actually using the compressor.  I've cc'ed the maintainers of the
> lz4hc_compress.c to see if they my have some more insight to the
> issue.

Does decompressor fail for you with the same error messages?

Have you tried to copy my file to the volume? It looks like minimal test case
for my board, if I remove any line decompressor works fine.

-- 
Regards,
Konstantin
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