Louis-David Mitterrand wrote:
On Tue, Oct 09, 2007 at 01:48:50PM +0400, Michael Tokarev wrote:
There still is - at least for ext[23]. Even offline resizers
can't do resizes from any to any size, extfs developers recommend
to recreate filesystem anyway if size changes significantly.
I'm too l
On Tue, Oct 09, 2007 at 01:48:50PM +0400, Michael Tokarev wrote:
>
> There still is - at least for ext[23]. Even offline resizers
> can't do resizes from any to any size, extfs developers recommend
> to recreate filesystem anyway if size changes significantly.
> I'm too lazy to find a reference n
On Tuesday October 9, [EMAIL PROTECTED] wrote:
> Hello Neil ,
>
> On Tue, 9 Oct 2007, Neil Brown wrote:
> > On Tuesday October 9, [EMAIL PROTECTED] wrote:
> >>
> >> Problems at step 4.: 'man mdadm' doesn't tell if it's possible to
> >> grow an array to a degraded array (non existant disc). I
Hello Neil ,
On Tue, 9 Oct 2007, Neil Brown wrote:
On Tuesday October 9, [EMAIL PROTECTED] wrote:
Problems at step 4.: 'man mdadm' doesn't tell if it's possible to
grow an array to a degraded array (non existant disc). Is it possible?
Why not experiment with loop devices on files and
Michael Tokarev said: (by the date of Tue, 09 Oct 2007 02:52:06 +0400)
> Janek Kozicki wrote:
> > Hello,
> >
> > Recently I started to use mdadm and I'm very impressed by its
> > capabilities.
> >
> > I have raid0 (250+250 GB) on my workstation. And I want to have
> > raid5 (4*500 = 1500 GB
Neil Brown said: (by the date of Tue, 9 Oct 2007 13:32:09 +1000)
> On Tuesday October 9, [EMAIL PROTECTED] wrote:
> >
> > Problems at step 4.: 'man mdadm' doesn't tell if it's possible to
> > grow an array to a degraded array (non existant disc). Is it possible?
>
> Why not experiment with l
Neil Brown wrote:
> On Tuesday October 9, [EMAIL PROTECTED] wrote:
[]
>> o During this reshape time, errors may be fatal to the whole array -
>> while mdadm do have a sense of "critical section", but the
>> whole procedure isn't as much tested as the rest of raid code,
>> I for one will not r
On Tuesday October 9, [EMAIL PROTECTED] wrote:
>
> Problems at step 4.: 'man mdadm' doesn't tell if it's possible to
> grow an array to a degraded array (non existant disc). Is it possible?
Why not experiment with loop devices on files and find out?
But yes: you can grow to a degraded array pro
On Tuesday October 9, [EMAIL PROTECTED] wrote:
>
> o degraded raid5 isn't really Raid - i.e, it's not any better than
> a raid0 array, that is, any disk fails => the whole array fails.
> So instead of creating a degraded raid5 array initially, create
> smaller one instead, but not degraded,
} -Original Message-
} From: [EMAIL PROTECTED] [mailto:linux-raid-
} [EMAIL PROTECTED] On Behalf Of Janek Kozicki
} Sent: Monday, October 08, 2007 6:47 PM
} To: linux-raid@vger.kernel.org
} Subject: Re: very degraded RAID5, or increasing capacity by adding discs
}
} Janek Kozicki said
Janek Kozicki wrote:
> Hello,
>
> Recently I started to use mdadm and I'm very impressed by its
> capabilities.
>
> I have raid0 (250+250 GB) on my workstation. And I want to have
> raid5 (4*500 = 1500 GB) on my backup machine.
Hmm. Are you sure you need that much space on the backup, to
start
Janek Kozicki said: (by the date of Tue, 9 Oct 2007 00:25:50 +0200)
> Richard Scobie said: (by the date of Tue, 09 Oct 2007 08:26:35 +1300)
>
> > No, but you can make a degraded 3 drive array, containing 2 drives and
> > then add the next drive to complete it.
> >
> > The array can then
Richard Scobie said: (by the date of Tue, 09 Oct 2007 08:26:35 +1300)
> No, but you can make a degraded 3 drive array, containing 2 drives and
> then add the next drive to complete it.
>
> The array can then be grown (man mdadm, GROW section), to add the fourth.
Oh, good. Thanks, I must've
} -Original Message-
} From: [EMAIL PROTECTED] [mailto:linux-raid-
} [EMAIL PROTECTED] On Behalf Of Richard Scobie
} Sent: Monday, October 08, 2007 3:27 PM
} To: linux-raid@vger.kernel.org
} Subject: Re: very degraded RAID5, or increasing capacity by adding discs
}
} Janek Kozicki wrote
Janek Kozicki wrote:
Is it possible anyhow to create a "very degraded" raid array - a one
that consists of 4 drives, but has only TWO ?
No, but you can make a degraded 3 drive array, containing 2 drives and
then add the next drive to complete it.
The array can then be grown (man mdadm, GROW
On Mon, 8 Oct 2007, Janek Kozicki wrote:
Hello,
Recently I started to use mdadm and I'm very impressed by its
capabilities.
I have raid0 (250+250 GB) on my workstation. And I want to have
raid5 (4*500 = 1500 GB) on my backup machine.
The backup machine currently doesn't have raid, just a si
Hello,
Recently I started to use mdadm and I'm very impressed by its
capabilities.
I have raid0 (250+250 GB) on my workstation. And I want to have
raid5 (4*500 = 1500 GB) on my backup machine.
The backup machine currently doesn't have raid, just a single 500 GB
drive. I plan to buy more HDDs to
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