From: David Greaves <david@dgreaves.com>
To: Janek Kozicki <janek_listy@wp.pl>
Cc: Linux RAID Mailing List <linux-raid@vger.kernel.org>
Subject: Re: raid1 on HDD + RAM ?
Date: Tue, 30 Sep 2008 21:43:51 +0100 [thread overview]
Message-ID: <48E28F87.4010701@dgreaves.com> (raw)
In-Reply-To: <20080930212107.3175f888@szpak>
Janek Kozicki wrote:
> David Greaves said: (by the date of Tue, 30 Sep 2008 18:09:57 +0100)
>
>>> They would automatically sync on boot-up of the computer.
>> You'd need to create and --add the ramdisk...
>
> ok, I'll figure this out :)
>
>
>
>>> I'm asking because an ultra-fast READ and normal WRITE would be
>>> useful for me...
>> Also look at the --write-mostly and --write-behind options in mdadm.
>
> thanks, this is great news for me. For real use I will need to
> repartition my hard drive - to create another partition for that.
>
> But just for testing - will it work if mdadm will use LVM partition,
> which is already on top of mdadm raid ?
yes, absolutely.
md works with *any* block device.
> Or maybe just use some huge file as a loopback device?
>
> Which testing method is better?
Since you are intending not to use the device then they should be the same.
I'd use an lvm partition though.
David
--
"Don't worry, you'll be fine; I saw it work in a cartoon once..."
next prev parent reply other threads:[~2008-09-30 20:43 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-30 15:49 raid1 on HDD + RAM ? Janek Kozicki
2008-09-30 17:09 ` David Greaves
2008-09-30 19:21 ` Janek Kozicki
2008-09-30 20:43 ` David Greaves [this message]
2008-09-30 18:21 ` Robin Hill
2008-09-30 19:36 ` Janek Kozicki
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