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

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Message-ID: <5209BD97.6000605@mageia.org>
Date:	Tue, 13 Aug 2013 08:01:11 +0300
From:	Thomas Backlund <tmb@...eia.org>
To:	Minchan Kim <minchan@...nel.org>
CC:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jordi Pujol <jordipujolp@...il.com>, stable@...r.kernel.org,
	Jiang Liu <jiang.liu@...wei.com>, linux-kernel@...r.kernel.org
Subject: Re: ZRAM 3.10.6 Buffer I/O error

Minchan Kim skrev 13.8.2013 07:33:
> Hello Greg,
>
> On Mon, Aug 12, 2013 at 08:58:02PM -0700, Greg Kroah-Hartman wrote:
>> On Tue, Aug 13, 2013 at 10:39:00AM +0900, Minchan Kim wrote:
>>> 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.
>>
>> -ENOCONTEXT
>
> https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/drivers/staging/zram?id=75c7caf5a052ffd8db3312fa7864ee2d142890c4
>
> It seems you already merge "zram:allow request end to conincide with disksize" to stable.
> So there is no concern any more.

Nope...

thats master branch wich tracks upstream tree...

it's not in the 3.10 stable as of 3.10.6 (or current stable queue)

https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/log/drivers/staging/zram?h=linux-3.10.y

--

Thomas

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