From: Francis Moreau <francis.moro@gmail.com>
To: linux-raid@vger.kernel.org
Subject: How does md(adm) work with fake-raid ?
Date: Thu, 18 Jul 2013 22:37:32 +0200 [thread overview]
Message-ID: <CAC9WiBjU_A0jsB4KoX4B9ohT4TD3cYuDdioM6hSWfK13Otjs-Q@mail.gmail.com> (raw)
Hello,
Sorry if the question is stupid but I'm a rookie in md things, but I'd
like to understand the big picture here.
I've been told to use mdadm whenever possible even if my raid is
handled by the bios (fake raid) which use the ddf metadata format.
(unfortunately it seems that I can't desactive this fake raid in
favour of linux soft raid). It's RAID1 BTW.
So my question is rather simple: in my understanding the bios is doing
the mirroring, but when setting up the md device, linux (kernel or
userspace, I don't really know) also handles the mirroring for RAID1
personnality. Is Linux clever enough to see that the mirroring is done
by the bios in my case ?
Could anybody teach me the big picture ?
Thanks a lot.
--
Francis
next reply other threads:[~2013-07-18 20:37 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-18 20:37 Francis Moreau [this message]
2013-07-18 22:03 ` How does md(adm) work with fake-raid ? Martin Wilck
2013-07-18 23:35 ` Dmitrijs Ledkovs
2013-07-19 15:58 ` Jiang, Dave
2013-07-19 18:58 ` Martin Wilck
[not found] ` <51E85949.2020107@gmail.com>
2013-07-19 7:02 ` Francis Moreau
[not found] ` <51E86613.9050505@arcor.de>
2013-07-19 7:08 ` Francis Moreau
2013-07-19 18:52 ` Martin Wilck
2013-07-21 13:41 ` Francis Moreau
2013-07-21 17:10 ` Martin Wilck
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