The array did have data in it when I added a new drive to it, it
wasn't a blank/empty array. I was trying to expand its size when my
computer went down. I'm really hoping it can be rescued. =/
On Sat, Oct 28, 2017 at 12:03 PM, Jun-Kai Teoh <kai.teoh@xxxxxxxxx> wrote:
> /dev/sda:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : f7333d4f:8300969d:55148d64:93c8afc8
> Name : livingrm-server:2 (local to host livingrm-server)
> Creation Time : Thu Jun 30 07:57:36 2016
> Raid Level : raid5
> Raid Devices : 7
>
> Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
> Array Size : 23441323008 (22355.39 GiB 24003.91 GB)
> Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
> Data Offset : 262144 sectors
> Super Offset : 8 sectors
> Unused Space : before=262056 sectors, after=688 sectors
> State : clean
> Device UUID : 9c14bcb8:be8310f5:5b50c3a7:e6e57423
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Sun Jan 15 08:09:15 2017
> Bad Block Log : 512 entries available at offset 72 sectors
> Checksum : 13425c44 - correct
> Events : 5667
>
> Layout : left-symmetric
> Chunk Size : 512K
>
> Device Role : Active device 2
> Array State : AAAAAAA ('A' == active, '.' == missing, 'R' == replacing)
> /dev/sdb:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x45
> Array UUID : f7333d4f:8300969d:55148d64:93c8afc8
> Name : livingrm-server:2 (local to host livingrm-server)
> Creation Time : Thu Jun 30 07:57:36 2016
> Raid Level : raid5
> Raid Devices : 8
>
> Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
> Array Size : 27348210176 (26081.29 GiB 28004.57 GB)
> Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
> Data Offset : 262144 sectors
> New Offset : 254976 sectors
> Super Offset : 8 sectors
> State : active
> Device UUID : 15d85573:6e78f040:8c028ef3:d1301f9d
>
> Internal Bitmap : 8 sectors from superblock
> Reshape pos'n : 39348736 (37.53 GiB 40.29 GB)
> Delta Devices : 1 (7->8)
>
> Update Time : Fri Oct 27 19:46:43 2017
> Bad Block Log : 512 entries available at offset 72 sectors
> Checksum : e568d9d9 - correct
> Events : 650554
>
> Layout : left-symmetric
> Chunk Size : 512K
>
> Device Role : Active device 3
> Array State : AAAAAAA. ('A' == active, '.' == missing, 'R' == replacing)
> /dev/sdc:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x45
> Array UUID : f7333d4f:8300969d:55148d64:93c8afc8
> Name : livingrm-server:2 (local to host livingrm-server)
> Creation Time : Thu Jun 30 07:57:36 2016
> Raid Level : raid5
> Raid Devices : 8
>
> Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
> Array Size : 27348210176 (26081.29 GiB 28004.57 GB)
> Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
> Data Offset : 262144 sectors
> New Offset : 254976 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : 64d5961e:230e558c:3748b561:a7c6ab8c
>
> Internal Bitmap : 8 sectors from superblock
> Reshape pos'n : 39348736 (37.53 GiB 40.29 GB)
> Delta Devices : 1 (7->8)
>
> Update Time : Fri Oct 27 19:46:43 2017
> Bad Block Log : 512 entries available at offset 72 sectors
> Checksum : 39c2485b - correct
> Events : 650554
>
> Layout : left-symmetric
> Chunk Size : 512K
>
> Device Role : Active device 0
> Array State : AAAAAAA. ('A' == active, '.' == missing, 'R' == replacing)
> /dev/sde:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x45
> Array UUID : f7333d4f:8300969d:55148d64:93c8afc8
> Name : livingrm-server:2 (local to host livingrm-server)
> Creation Time : Thu Jun 30 07:57:36 2016
> Raid Level : raid5
> Raid Devices : 8
>
> Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
> Array Size : 27348210176 (26081.29 GiB 28004.57 GB)
> Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
> Data Offset : 262144 sectors
> New Offset : 254976 sectors
> Super Offset : 8 sectors
> State : active
> Device UUID : 2df0b319:bdb18eee:27b318ec:da55d53d
>
> Internal Bitmap : 8 sectors from superblock
> Reshape pos'n : 39348736 (37.53 GiB 40.29 GB)
> Delta Devices : 1 (7->8)
>
> Update Time : Fri Oct 27 19:46:43 2017
> Bad Block Log : 512 entries available at offset 72 sectors
> Checksum : d2a600e7 - correct
> Events : 650554
>
> Layout : left-symmetric
> Chunk Size : 512K
>
> Device Role : Active device 6
> Array State : AAAAAAA. ('A' == active, '.' == missing, 'R' == replacing)
> /dev/sdf:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x45
> Array UUID : f7333d4f:8300969d:55148d64:93c8afc8
> Name : livingrm-server:2 (local to host livingrm-server)
> Creation Time : Thu Jun 30 07:57:36 2016
> Raid Level : raid5
> Raid Devices : 8
>
> Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
> Array Size : 27348210176 (26081.29 GiB 28004.57 GB)
> Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
> Data Offset : 262144 sectors
> New Offset : 254976 sectors
> Super Offset : 8 sectors
> State : active
> Device UUID : f1a790a9:98e01257:d9ab257d:95c8f1fc
>
> Internal Bitmap : 8 sectors from superblock
> Reshape pos'n : 39348736 (37.53 GiB 40.29 GB)
> Delta Devices : 1 (7->8)
>
> Update Time : Fri Oct 27 19:46:43 2017
> Bad Block Log : 512 entries available at offset 72 sectors
> Checksum : 1b3052f2 - correct
> Events : 650554
>
> Layout : left-symmetric
> Chunk Size : 512K
>
> Device Role : Active device 4
> Array State : AAAAAAA. ('A' == active, '.' == missing, 'R' == replacing)
> /dev/sdg:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x45
> Array UUID : f7333d4f:8300969d:55148d64:93c8afc8
> Name : livingrm-server:2 (local to host livingrm-server)
> Creation Time : Thu Jun 30 07:57:36 2016
> Raid Level : raid5
> Raid Devices : 8
>
> Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
> Array Size : 27348210176 (26081.29 GiB 28004.57 GB)
> Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
> Data Offset : 262144 sectors
> New Offset : 254976 sectors
> Super Offset : 8 sectors
> State : active
> Device UUID : 6f44eba1:29d246a4:c5e8312e:bac00a7b
>
> Internal Bitmap : 8 sectors from superblock
> Reshape pos'n : 39348736 (37.53 GiB 40.29 GB)
> Delta Devices : 1 (7->8)
>
> Update Time : Fri Oct 27 19:46:43 2017
> Bad Block Log : 512 entries available at offset 72 sectors
> Checksum : 8fe4160e - correct
> Events : 650554
>
> Layout : left-symmetric
> Chunk Size : 512K
>
> Device Role : Active device 1
> Array State : AAAAAAA. ('A' == active, '.' == missing, 'R' == replacing)
> /dev/sdh:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x47
> Array UUID : f7333d4f:8300969d:55148d64:93c8afc8
> Name : livingrm-server:2 (local to host livingrm-server)
> Creation Time : Thu Jun 30 07:57:36 2016
> Raid Level : raid5
> Raid Devices : 8
>
> Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
> Array Size : 27348210176 (26081.29 GiB 28004.57 GB)
> Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
> Data Offset : 262144 sectors
> New Offset : 254976 sectors
> Super Offset : 8 sectors
> Recovery Offset : 11264816 sectors
> State : active
> Device UUID : 109b7a2f:0529794c:2cf95cc1:d6c0bd6b
>
> Internal Bitmap : 8 sectors from superblock
> Reshape pos'n : 39348736 (37.53 GiB 40.29 GB)
> Delta Devices : 1 (7->8)
>
> Update Time : Fri Oct 27 19:46:43 2017
> Bad Block Log : 512 entries available at offset 72 sectors
> Checksum : 4a2fb746 - correct
> Events : 650554
>
> Layout : left-symmetric
> Chunk Size : 512K
>
> Device Role : Active device 2
> Array State : AAAAAAA. ('A' == active, '.' == missing, 'R' == replacing)
> /dev/sdi:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x45
> Array UUID : f7333d4f:8300969d:55148d64:93c8afc8
> Name : livingrm-server:2 (local to host livingrm-server)
> Creation Time : Thu Jun 30 07:57:36 2016
> Raid Level : raid5
> Raid Devices : 8
>
> Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
> Array Size : 27348210176 (26081.29 GiB 28004.57 GB)
> Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
> Data Offset : 262144 sectors
> New Offset : 254976 sectors
> Super Offset : 8 sectors
> State : active
> Device UUID : deb04cea:d6530966:6c70ca90:bebb143e
>
> Internal Bitmap : 8 sectors from superblock
> Reshape pos'n : 39348736 (37.53 GiB 40.29 GB)
> Delta Devices : 1 (7->8)
>
> Update Time : Fri Oct 27 19:46:43 2017
> Bad Block Log : 512 entries available at offset 72 sectors
> Checksum : bfaa86d9 - correct
> Events : 650554
>
> Layout : left-symmetric
> Chunk Size : 512K
>
> Device Role : Active device 5
> Array State : AAAAAAA. ('A' == active, '.' == missing, 'R' == replacing)
>
>
> and mdadm -D
>
> /dev/md126:
> Version :
> Raid Level : raid0
> Total Devices : 0
>
> State : inactive
>
> Number Major Minor RaidDevice
>
> On Sat, Oct 28, 2017 at 11:48 AM, Mark Knecht <markknecht@xxxxxxxxx> wrote:
>> On Sat, Oct 28, 2017 at 11:36 AM, Jun-Kai Teoh <kai.teoh@xxxxxxxxx> wrote:
>>> Hi all,
>>>
>>> Hope this email is going to the right place.
>>>
>>> I'll cut to the chase - I added a drive to my RAID 5 and was resyncing
>>> when my machine was abruptly powered down. Upon booting it up again,
>>> my RAID array is now missing.
>>>
>>> I've followed the instructions that I've found on the wiki, and it
>>> hasn't solved my issues, but it's given me a sense of the things that
>>> I'm hoping can help you guys help me troubleshoot.
>>>
>>> My array can't be assembled. It tells me that the superblock on
>>> /dev/sda doesn't match the others.
>>>
>>> /dev/sda thinks the array has 7 drives
>>> /dev/sd[bcefghi] thinks the array has 8 drives
>>>
>>> /dev/sda was not being reshaped
>>> /dev/sd[bcefghi] has reshape position data in the raid.status file
>>>
>>> both /dev/sda and /dev/sdh think their device role is Active device 2
>>>
>>> I can't bring /dev/md126 back up with sd[bcefghi] as it'll tell me
>>> that there are 6 drives and 1 rebuilding, not enough to start the
>>> array
>>>
>>> My mdadm.conf shows a /dev/dev/127 with very minimal info in it - does
>>> not look right to me.
>>>
>>> I haven't zeroed the superblock, nor have I tried a clean-assemble
>>> either. I saw the wiki say I should email the group if I've gotten
>>> that far and I'm panicking and nothing's working. So...
>>>
>>> Help me out, pretty please?
>>
>> I wonder if you know for certain that the RAID was scrubbed and clean
>> before you made the changes?
>>
>> Maybe sda got kicked before you added the new drive?
>>
>> The number one thing you'll want to supply is the 'Examine' results
>> for all drives:
>>
>> mdadm -E /dev/sd[abcdefghi]
>>
>> and
>>
>> mdadm -D for the array if it rill run.
>>
>> I would also run smartctl on the drives and post those results back also.
>>
>> I won't be able to solve your problems but those items are pretty much
>> required for others to get started in a meaningful way.
>>
>> Good luck,
>> Mark
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