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From: Goffredo Baroncelli <kreijack@inwind.it>
To: Qu Wenruo <quwenruo@cn.fujitsu.com>, linux-btrfs@vger.kernel.org
Cc: dsterba@suse.cz, lakshmipathi.g@gmail.com
Subject: Re: [PATCH v4 00/20] Btrfs-progs offline scrub
Date: Mon, 29 May 2017 18:52:54 +0200	[thread overview]
Message-ID: <8f06d043-6b53-57f9-adb6-bf949501e8a3@inwind.it> (raw)
In-Reply-To: <ee9f0a45-bd92-e534-c98f-a9bb398e10f2@cn.fujitsu.com>

On 2017-05-29 02:21, Qu Wenruo wrote:
> 
> 
> At 05/27/2017 02:37 AM, Goffredo Baroncelli wrote:
>> Hi Qu,
>>
>> On 2017-05-25 08:21, Qu Wenruo wrote:
>>
>>> And since kernel scrub won't account P/Q corruption, it makes us quite
>>> hard to detect error like kernel screwing up P/Q when scrubbing.
>>
>> could you elaborate the above sentence: in my test the kernel-scrub (4.12.0-rc2) is able to correct a wrong 'P' parity; am I missing something ?
> 
> That's because Liu Bo and I exposed and fixed the bug.
> 
> Or the case will still be the same.
> 
> Thanks,
> Qu
Ok, thank for your clarification.
BR
G.Baroncelli

> 
>>
>> BR
>> G.Baroncelli
>> [...]
>>
> 
> 
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-- 
gpg @keyserver.linux.it: Goffredo Baroncelli <kreijackATinwind.it>
Key fingerprint BBF5 1610 0B64 DAC6 5F7D  17B2 0EDA 9B37 8B82 E0B5

  reply	other threads:[~2017-05-29 16:52 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-25  6:21 [PATCH v4 00/20] Btrfs-progs offline scrub Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 01/20] btrfs-progs: raid56: Introduce raid56 header for later recovery usage Qu Wenruo
2017-05-31 13:25   ` David Sterba
2017-05-25  6:21 ` [PATCH v4 02/20] btrfs-progs: raid56: Introduce tables for RAID6 recovery Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 03/20] btrfs-progs: raid56: Allow raid6 to recover 2 data stripes Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 04/20] btrfs-progs: raid56: Allow raid6 to recover data and p Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 05/20] btrfs-progs: Introduce wrapper to recover raid56 data Qu Wenruo
2017-05-31 13:52   ` David Sterba
2017-06-01  1:04     ` Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 06/20] btrfs-progs: Introduce new btrfs_map_block function which returns more unified result Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 07/20] btrfs-progs: Allow __btrfs_map_block_v2 to remove unrelated stripes Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 08/20] btrfs-progs: csum: Introduce function to read out data csums Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 09/20] btrfs-progs: scrub: Introduce structures to support offline scrub for RAID56 Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 10/20] btrfs-progs: scrub: Introduce functions to scrub mirror based tree block Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 11/20] btrfs-progs: scrub: Introduce functions to scrub mirror based data blocks Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 12/20] btrfs-progs: scrub: Introduce function to scrub one mirror-based extent Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 13/20] btrfs-progs: scrub: Introduce function to scrub one data stripe Qu Wenruo
2017-05-25  6:21 ` [PATCH v4 14/20] btrfs-progs: scrub: Introduce function to verify parities Qu Wenruo
2017-05-25  6:22 ` [PATCH v4 15/20] btrfs-progs: extent-tree: Introduce function to check if there is any extent in given range Qu Wenruo
2017-05-25  6:22 ` [PATCH v4 16/20] btrfs-progs: scrub: Introduce function to recover data parity Qu Wenruo
2017-05-25  6:22 ` [PATCH v4 17/20] btrfs-progs: scrub: Introduce helper to write a full stripe Qu Wenruo
2017-05-25  6:22 ` [PATCH v4 18/20] btrfs-progs: scrub: Introduce a function to scrub one " Qu Wenruo
2017-05-25  6:22 ` [PATCH v4 19/20] btrfs-progs: scrub: Introduce function to check a whole block group Qu Wenruo
2017-05-25  6:22 ` [PATCH v4 20/20] btrfs-progs: scrub: Introduce offline scrub function Qu Wenruo
2017-05-26 18:37 ` [PATCH v4 00/20] Btrfs-progs offline scrub Goffredo Baroncelli
2017-05-29  0:21   ` Qu Wenruo
2017-05-29 16:52     ` Goffredo Baroncelli [this message]
2017-05-30 18:54 ` David Sterba
2017-05-31 14:07   ` David Sterba
2017-06-18  6:20 ` Lakshmipathi.G

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