From: Neil Brown <neilb@suse.de>
To: Bill Davidsen <davidsen@tmr.com>
Cc: Janek Kozicki <janek_listy@wp.pl>, linux-raid@vger.kernel.org
Subject: Re: raid10 on three discs - few questions.
Date: Thu, 7 Feb 2008 13:21:24 +1100 [thread overview]
Message-ID: <18346.27428.521186.423248@notabene.brown> (raw)
In-Reply-To: message from Bill Davidsen on Wednesday February 6
On Wednesday February 6, davidsen@tmr.com wrote:
> >
> >
> >> 4. Would it be possible to later '--grow' the array to use 4 discs in
> >> raid10 ? Even with far=2 ?
> >>
> >>
> >
> > No.
> >
> > Well.... if by "later" you mean "in five years", then maybe. But the
> > code doesn't currently exist.
> >
>
> That's a reason to avoid raid10 for certain applications, then, and go
> with a more manual 1+0 or similar.
Not really. You cannot reshape a raid0 either.
>
> Can you create a raid10 with one drive "missing" and add it later? I
> know, I should try it when I get a machine free... but I'm being lazy today.
Yes, but then the array would be degraded and a single failure could
destroy your data.
NeilBrown
prev parent reply other threads:[~2008-02-07 2:21 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-03 22:50 raid10 on three discs - few questions Janek Kozicki
2008-02-03 23:11 ` Neil Brown
2008-02-03 23:29 ` Janek Kozicki
2008-02-03 23:48 ` Jon Nelson
2008-02-03 23:48 ` Jon Nelson
2008-02-06 18:43 ` Bill Davidsen
2008-02-06 18:28 ` Jon Nelson
[not found] ` <cccedfc60802061026s1831aa5fh25eeb151cacf8516@mail.gmail.com>
2008-02-06 22:13 ` Bill Davidsen
2008-02-07 2:21 ` Neil Brown [this message]
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