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From: Thomas Arthur Oehser <tom@toms.net>
To: Asdo <asdo@shiftmail.org>
Cc: linux-raid <linux-raid@vger.kernel.org>
Subject: Re: Is shrinking raid5 possible?
Date: Fri, 6 Nov 2009 10:26:23 -0500	[thread overview]
Message-ID: <20091106152623.GA13412@Toms.NET> (raw)
In-Reply-To: <4AF43B14.60804@shiftmail.org>


> Putting swap in a raid-0 will hang your computer as soon as sda, sdb or  
> sdc fails.
> Are you OK with that?

I'll move the swap to the partitions then, though it is a moot point as
the machine has 4G physical RAM and runs with a load such that usually
about 2G is cache... I assume that if it never swaps, it never matters.

But what I care about is the raid-5 shrinking issue... does anyone know
if there is a reasonably safe way to shrink a raid-5 device (size, not
number of drives) that is superblock format 0.90?  I assume the --grow
just forces the superblock based on the _device_, but if I shrank the
_device_ before I shrank the raid, it wouldn't find the superblock in
the first place...

-Tom


  reply	other threads:[~2009-11-06 15:26 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-06-19  2:30 Is shrinking raid5 possible? Paul Davidson
2006-06-19  4:39 ` Neil Brown
2006-06-19  5:07   ` Paul Davidson
2006-06-23  0:49   ` Bill Davidsen
2006-06-23  1:26     ` Neil Brown
2006-06-23  2:17       ` Paul Davidson
2006-06-23  8:34       ` Henrik Holst
2006-06-23 18:16       ` Christian Pernegger
2006-06-26  7:41         ` Neil Brown
2006-06-26 11:33           ` Christian Pernegger
2006-11-22 20:40             ` Henrik Holst
2009-11-06 13:17               ` Thomas Arthur Oehser
2009-11-06 15:04                 ` Asdo
2009-11-06 15:26                   ` Thomas Arthur Oehser [this message]
2009-11-06 17:00                     ` Goswin von Brederlow
2009-11-06 18:32                 ` John Robinson
2009-11-06 18:38                   ` Thomas Arthur Oehser
2009-11-06 19:30                     ` Goswin von Brederlow
2009-11-06 19:38                       ` John Robinson

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