From: Andy Smith <andy@strugglers.net>
To: "linux-raid@vger.kernel.org" <linux-raid@vger.kernel.org>
Subject: Re: Shrinking number of devices on a RAID-10 (near 2) array
Date: Sun, 24 Aug 2014 13:19:22 +0000 [thread overview]
Message-ID: <20140824131922.GF11855@bitfolk.com> (raw)
In-Reply-To: <20140824164507.4954df45@notabene.brown>
On Sun, Aug 24, 2014 at 04:45:07PM +1000, NeilBrown wrote:
> > > Array Size : 471859200 (450.00 GiB 483.18 GB)
> > > Used Dev Size : 309363520 (295.03 GiB 316.79 GB)
>
> This is a near=2 6 drive RAID10, so Array Size should be 3 times Used Dev
> Size.
> The fact that it isn't shows that he has already explicitly set the
> --array-size to something appropriate. I'm sure he reduced the size of the
> filesystem first as the man page says:
Yup, it's an LVM PV so I did pvresize and mdadm --array-size first
to some safe lower value, before I realised that mdadm would have
told me the exact --array-size I needed anyway.
I should have mentioned that to reduce confusion, but it didn't
seem pertinent to where I got stuck.
Cheers,
Andy
next prev parent reply other threads:[~2014-08-24 13:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-23 16:31 Shrinking number of devices on a RAID-10 (near 2) array Andy Smith
2014-08-24 3:09 ` NeilBrown
2014-08-24 6:28 ` Craig Curtin
2014-08-24 6:45 ` NeilBrown
2014-08-24 13:19 ` Andy Smith [this message]
2014-08-24 14:39 ` Andy Smith
2014-08-25 10:32 ` Andy Smith
2014-08-25 11:26 ` NeilBrown
2014-08-25 11:34 ` Andy Smith
2014-08-28 9:53 ` Andy Smith
2014-08-29 3:53 ` NeilBrown
2014-08-29 4:02 ` Andy Smith
2014-08-29 4:18 ` NeilBrown
2014-08-29 4:26 ` Andy Smith
2014-08-29 4:35 ` NeilBrown
2014-08-29 4:42 ` Andy Smith
2014-08-29 6:04 ` NeilBrown
2014-08-29 20:45 ` Andy Smith
2014-08-29 20:47 ` [PATCH 1/1] Grow: Report when grow needs metadata update Andy Smith
2014-09-03 3:28 ` NeilBrown
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