From: Phil Turmel <philip@turmel.org>
To: Drew Reusser <dreusser@gmail.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: Issue with Raid 10 super block failing
Date: Sun, 18 Nov 2012 12:01:59 -0500 [thread overview]
Message-ID: <50A91487.70806@turmel.org> (raw)
In-Reply-To: <CAPAnFc9_AqQCHnzpNukVJNuaAZ0k9+i0wEZn6SAX=ucF_X_k2g@mail.gmail.com>
On 11/18/2012 11:49 AM, Drew Reusser wrote:
> On Sun, Nov 18, 2012 at 2:35 PM, Phil Turmel <philip@turmel.org> wrote:
[trim /]
>> Please repeat the examines with "mdadm -E /dev/sd[abde]1"
> I originally started the disks at (block?) 2048 so there was a 2mb
> partition to load the bootloader (grub) and mdadm. Everything else
> was on one partition as you observed. I figured the simpler the
> better for this configuration.
>
> Here you go.
>
>
> mint dev # mdadm -E /dev/sd[abde]1
> /dev/sda1:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x0
> Array UUID : db9e3115:556a49db:27c42d30:02657472
> Name : mint:0 (local to host mint)
> Creation Time : Thu Nov 15 16:08:02 2012
> Raid Level : raid10
> Raid Devices : 4
>
> Avail Dev Size : 1953259520 (931.39 GiB 1000.07 GB)
> Array Size : 1952211968 (1861.77 GiB 1999.07 GB)
> Used Dev Size : 1952211968 (930.89 GiB 999.53 GB)
> Data Offset : 262144 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : 933ec5c0:d6819e33:adb0e6c8:90e337bd
>
> Update Time : Thu Nov 15 20:08:55 2012
> Checksum : b516984f - correct
> Events : 17
>
> Layout : near=2
> Chunk Size : 512K
>
> Device Role : Active device 0
> Array State : AAAA ('A' == active, '.' == missing)
> /dev/sdb1:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x0
> Array UUID : db9e3115:556a49db:27c42d30:02657472
> Name : mint:0 (local to host mint)
> Creation Time : Thu Nov 15 16:08:02 2012
> Raid Level : raid10
> Raid Devices : 4
>
> Avail Dev Size : 1952212992 (930.89 GiB 999.53 GB)
> Array Size : 1952211968 (1861.77 GiB 1999.07 GB)
> Used Dev Size : 1952211968 (930.89 GiB 999.53 GB)
> Data Offset : 262144 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : 9d6df7c7:ce401405:4ea18763:a528ecc5
>
> Update Time : Thu Nov 15 20:08:55 2012
> Checksum : 3103c408 - correct
> Events : 17
>
> Layout : near=2
> Chunk Size : 512K
>
> Device Role : Active device 1
> Array State : AAAA ('A' == active, '.' == missing)
> /dev/sdd1:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x0
> Array UUID : db9e3115:556a49db:27c42d30:02657472
> Name : mint:0 (local to host mint)
> Creation Time : Thu Nov 15 16:08:02 2012
> Raid Level : raid10
> Raid Devices : 4
>
> Avail Dev Size : 1953259520 (931.39 GiB 1000.07 GB)
> Array Size : 1952211968 (1861.77 GiB 1999.07 GB)
> Used Dev Size : 1952211968 (930.89 GiB 999.53 GB)
> Data Offset : 262144 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : fa1a1b82:989e933a:95e4d249:5cee901d
>
> Update Time : Thu Nov 15 20:08:55 2012
> Checksum : 5ea6d02d - correct
> Events : 17
>
> Layout : near=2
> Chunk Size : 512K
>
> Device Role : Active device 2
> Array State : AAAA ('A' == active, '.' == missing)
> /dev/sde1:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x0
> Array UUID : db9e3115:556a49db:27c42d30:02657472
> Name : mint:0 (local to host mint)
> Creation Time : Thu Nov 15 16:08:02 2012
> Raid Level : raid10
> Raid Devices : 4
>
> Avail Dev Size : 1952212992 (930.89 GiB 999.53 GB)
> Array Size : 1952211968 (1861.77 GiB 1999.07 GB)
> Used Dev Size : 1952211968 (930.89 GiB 999.53 GB)
> Data Offset : 262144 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : 594ed481:471ef11a:027f1c24:6f9d057d
>
> Update Time : Thu Nov 15 20:08:55 2012
> Checksum : 786bd4bc - correct
> Events : 17
>
> Layout : near=2
> Chunk Size : 512K
>
> Device Role : Active device 3
> Array State : AAAA ('A' == active, '.' == missing)
>
This all looks like it should work.
Please try "mdadm -v --assemble /dev/md0 /dev/sd[abde]1" and show the
output. If it doesn't work, also show "cat /proc/mdstat" and "dmesg".
Phil
next prev parent reply other threads:[~2012-11-18 17:01 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-17 18:06 Issue with Raid 10 super block failing Drew Reusser
2012-11-17 23:48 ` Phil Turmel
2012-11-18 3:07 ` Drew Reusser
2012-11-18 14:35 ` Phil Turmel
2012-11-18 16:49 ` Drew Reusser
2012-11-18 17:01 ` Phil Turmel [this message]
2012-11-18 17:39 ` Drew Reusser
2012-11-18 18:56 ` Phil Turmel
2012-11-18 19:10 ` Drew Reusser
2012-11-19 13:39 ` Phil Turmel
2012-11-19 16:44 ` Drew Reusser
2012-11-19 17:12 ` Phil Turmel
2012-11-19 20:41 ` Drew Reusser
2012-11-19 20:47 ` Phil Turmel
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