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Date:	Sat, 17 Mar 2012 14:14:43 -0400
From:	Mark Lord <>
To:	Shaohua Li <>
CC:	NeilBrown <>,
	"" <>,
	"" <>,
	"" <>
Subject: Re: [patch 0/7] Add TRIM support for raid linear/0/1/10

On 12-03-13 10:47 PM, Shaohua Li wrote:
> On 3/14/12 10:24 AM, NeilBrown wrote:
>>  On Mon, 12 Mar 2012 11:04:12 +0800 Shaohua Li <> wrote:
>>  Also I wonder about handling failure in RAID1.
>>  I think the code will currently treat it like a write error, and
>>  maybe record a bad block (then fail the device is writing the badblock
>>  record fails). Is that what were want?
> Mainly to simplify the code. And I thought a normal discard should not fail.
> If it fails, something is wrong, marked it as badblock maybe not bad.

That sounds like a VERY bad idea.
Failures happen for lots of reasons,
but generic comm errors are not an excuse to suddenly mark sectors as bad.
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