linux-kernel - Re: ZRAM 3.10.6 Buffer I/O error

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Message-ID: <20130813013900.GC3101@bbox>
Date:	Tue, 13 Aug 2013 10:39:00 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Thomas Backlund <tmb@...eia.org>
Cc:	Jordi Pujol <jordipujolp@...il.com>, stable@...r.kernel.org,
	Jiang Liu <jiang.liu@...wei.com>, linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: ZRAM 3.10.6 Buffer I/O error

Hello,

On Mon, Aug 12, 2013 at 07:39:46PM +0300, Thomas Backlund wrote:
> 12.08.2013 17:27, Jordi Pujol skrev:
> >Hello,
> >
> >zram shows an error when mounting a swap partition,
> >current version Linux kernel 3.10.6,
> >previous versions worked, I suppose that latest zram patches have some
> >problem,
> >
> >machine is an AMD64 dual core, 4GB RAM
> >
> >+ modprobe -qb zram num_devices=2
> >+ echo 104857600 > /sys/block/zram0/disksize
> >
> ># mkswap /dev/zram0
> >Setting up swapspace version 1, size = 102396 KiB
> >no label, UUID=6c249930-2ba0-46cf-a8c6-766481942b7d
> >
> ># pager /var/log/dmesg
> >(no more errors shown)
> >
> ># swapon /dev/zram0
> >
> ># pager /var/log/dmesg
> >...
> >[  309.300479] Buffer I/O error on device zram0, logical block 25599
> >[  309.300491] Buffer I/O error on device zram0, logical block 25599
> >[  309.300514] Buffer I/O error on device zram0, logical block 25599
> >[  345.205887] Adding 102396k swap on /dev/zram0.  Priority:-2 extents:1
> >across:102396k SSFS
> >
> >full log files and the kernel source are stored in the address:
> >
> >http://livenet.selfip.com/ftp/debian/zram_3.10.6_IO_error/
> >
> 
> 
> I think this one should fix it and belongs in 3.10 stable too:

Very true. Let's Cc Greg, explicitely.

-- 
Kind regards,
Minchan Kim
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