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From: Andy Smith <andy@strugglers.net>
To: linux-btrfs@vger.kernel.org
Cc: linux-raid@vger.kernel.org
Subject: Re: put 2 hard drives in mdadm raid 1 and detect bitrot like btrfs does, what's that called?
Date: Thu, 4 Feb 2021 10:54:57 +0000	[thread overview]
Message-ID: <20210204105457.GI3712@bitfolk.com> (raw)
In-Reply-To: <a2cd87208a74fb36224539fa10727066@mail.eclipso.de>

Hi Cedric,

On Wed, Feb 03, 2021 at 08:33:18PM +0100,   wrote:
> it's called "dm-integrity", as mentioned in this e-mail:
> https://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg93037.html

If you do this it would be very interesting to see performance
figures for the following setups:

- btrfs with raid1 meta and data allocation
- mdadm raid1 on raw devices
- mdadm raid1 on dm-integrity (no encryption) on raw devices
- mdadm raid1 on dm-integrity (encryption) on raw devices

just to see what kind of performance loss dm-integrity and
encryption is going to impose.

After doing it, it would find a nice home on the Linux RAID wiki:

    https://raid.wiki.kernel.org/index.php/Dm-integrity

Cheers,
Andy

       reply	other threads:[~2021-02-04 10:55 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <f5d8af48e8d5543267089286c01c476f@mail.eclipso.de>
     [not found] ` <a2cd87208a74fb36224539fa10727066@mail.eclipso.de>
2021-02-04 10:54   ` Andy Smith [this message]
2021-02-04 17:43     ` Re: put 2 hard drives in mdadm raid 1 and detect bitrot like btrfs does, what's that called?  
2021-02-04 18:13       ` Goffredo Baroncelli
2021-02-04 19:58         `  

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