From: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
To: Shaohua Li <shli@fb.com>, linux-raid@vger.kernel.org
Cc: Kernel-team@fb.com, songliubraving@fb.com, hch@infradead.org,
dan.j.williams@intel.com, neilb@suse.de
Subject: Re: [PATCH v2 0/6] a caching layer for raid5/6
Date: Tue, 19 May 2015 11:22:51 +0200 [thread overview]
Message-ID: <555B00EB.9040303@intel.com> (raw)
In-Reply-To: <cover.1432003804.git.shli@fb.com>
On 05/19/2015 04:57 AM, Shaohua Li wrote:
> Hi,
>
> This is the second version of the raid5/6 caching layer patches. The patches add a
> caching layer for raid5/6. The caching layer uses a SSD as a cache for a raid
> 5/6. It works like the similar way of a hardware raid controller. The purpose
> is to improve raid performance (reduce read-modify-write) and fix write hole
> issue. The main patch is patch 3 and the description has all details about the
> implementation.
>
> Main changes of V2 are to improve performance. Meta data write doesn't use FUA
> any more. Discard request is only dispatched when discard range is big enough.
> Also have some bug fixing and code cleanup. Please review!
Hi,
It seems patch 3 is missing.
Artur
next prev parent reply other threads:[~2015-05-19 9:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-19 2:57 [PATCH v2 0/6] a caching layer for raid5/6 Shaohua Li
2015-05-19 2:57 ` [PATCH v2 1/6] MD: add a new disk role to present cache device Shaohua Li
2015-05-19 2:57 ` [PATCH v2 2/6] raid5: directly use mddev->queue Shaohua Li
2015-05-19 2:57 ` [PATCH v2 4/6] raid5: add some sysfs entries Shaohua Li
2015-05-19 2:57 ` [PATCH v2 5/6] md: don't allow resize/reshape with cache support Shaohua Li
2015-05-19 2:57 ` [PATCH v2 6/6] raid5: skip resync if caching is enabled Shaohua Li
2015-05-19 9:22 ` Artur Paszkiewicz [this message]
2015-05-20 5:23 ` [PATCH v2 0/6] a caching layer for raid5/6 NeilBrown
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