Wizard Raid 1 is degraded at start

[Martin Melissen]

First of all I wanna thank Joäo for his dedicated work on this piece of software.

I'm a newbie in Linux. So I hope that I don't make stupid mistakes.

I have the following sytem working on a flashed Alt-F 0.1RC3

I've used the Wizard to make a raid 1 on 2x 3 TB HDD,s. When the wizard is done, I have to restart the DNS otherwise I can't connect to it anymore.

After the progress I have a degraded RAID1. 

When I look at the filesystems I see that I have a md0 with 2.74 TB en there is sdb2 with also 2.7 TB. So the second disc isn't brought into the RAID.

Can you tell me what I probably did wrong? And is there a way to transfer the second disc into the RAID?

Thank you in advance for the answer

Greetings Martin

 

Name: DNS-323

Device: DNS-323 rev-B1

Disks

Bay	Dev.	Model	Capacity	Power Status	Temp	Health
right	sda	WDC WD30EFRX-68AX9N0	3000.6 GB	active or idle	37°C/98.6°F	passed
left	sdb	WDC WD30EZRX-00MMMB0	3000.6 GB	active or idle	38°C/100.4°F	passed

RAID

Dev.	Capacity	Level	State	Status	Action	Done	ETA
md0	2794.0 GB	raid1	clean	degraded	idle

Mounted Filesystems

Dev.	Label	Capacity	Available	FS	Mode	Dirty	Automatic FSCK in
md0		2.7TB	2.7TB	ext4	RW		29 mounts or 179 days

Filesystems

Dev.	Size	FS	Mnt	Label	Mount Options	FS Operations	New FS Operations
md0	2.7TB	ext4	*			Operation Unmount Check ForceFix Set Label Set Mnt Options Shrink Enlarge Wipe	New FS ext2 ext3 ext4 vfat ntfs	Operation Format Convert
sdb2	2794.0GB	none				Operation Mount Check ForceFix Set Label Set Mnt Options Shrink Enlarge Wipe	New FS ext2 ext3 ext4 vfat ntfs	Operation Format Convert

[Joao Cardoso]

...

On Jul 19, 2013 11:36 PM, "Martin Melissen" <mrm...@gmail.com> wrote:
>
> First of all I wanna thank Joäo for his dedicated work on this piece of software.
> I'm a newbie in Linux. So I hope that I don't make stupid mistakes.
>
> I have the following sytem working on a flashed Alt-F 0.1RC3
> I've used the Wizard to make a raid 1 on 2x 3 TB HDD,s. When the wizard is done, I have to restart the DNS otherwise I can't connect to it anymore.

dont know what happened. what did the status page shows after the wizard finish? what do you mean with cant connect?

> After the progress I have a degraded RAID1. 
> When I look at the filesystems I see that I have a md0 with 2.74 TB en there is sdb2 with also 2.7 TB. So the second disc isn't brought into the RAID.
>
> Can you tell me what I probably did wrong? And is there a way to transfer the second disc into the RAID?

in the disk>raid page , in the md0 device line you have to select the sdb2 partition, then select the add operation, and wait for the resync to finish.
for more info read the online raid help page.

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[Martin Melissen]

Thanks for your quick answer. 

Now I understand what I couldn't find. Because this is what I see:

RAID Creation and Maintenance 

When done you must save settings 

fdisk: device has more than 2^32 sectors, can't use all of them fdisk: device has more than 2^32 sectors, can't use all of them

RAID Creation

Dev.	Type	Component 1	Component 2	Spare
md0	JBD Raid 0 Raid 1 Raid 5	none sda2 3000GB sdb2 3000GB	none sda2 3000GB sdb2 3000GB	none sda2 3000GB sdb2 3000GB

RAID Maintenance

Dev.	Capacity	Level	Components		Array	RAID Operations	Component Operations

That means that I miss a important part. I hope you can help me out.

Thanks again,

Greetings Martin

Op zaterdag 20 juli 2013 23:22:57 UTC+2 schreef Joao Cardoso het volgende:

[João Cardoso]

I don't understand who you got these results, nobody else reported that. And the Status Page seems OK. Can you get a screen dump of the Disk->Partitioner, with one disk selected at a time? Posting the 'Alt-F.log' that you will find at the root of the md0 filesystem (/mnt/md0) can also help

I really need to get one 3TB disk to test this myself, pitty that I don't need one.

Can you afterwards please repeat the Disk->Wizard again, selecting both disks in the upper section, RAID1/ext4 in the lower section, hitting Abracadabra and screen-capturing any error message?

Beware that you will loose all data currently on disks!

[Martin Melissen]

This is the screendump from the both Disk partioner screens

I really don't know how to get the log out of the root.

Thanks

[João Cardoso]

On Monday, July 22, 2013 12:22:02 AM UTC+1, Martin Melissen wrote:

This is the screendump from the both Disk partioner screens

Sorry for the late answer, holidays :-)

Everything looks OK in the screenshots.

 

I really don't know how to get the log out of the root.

you can use ftp, login as the 'root' user, same password as the webUI:

ftp nas

Connected to nas.

220 (vsFTPd 3.0.2)

Name (nas:jcard): root

331 Please specify the password.

Password:

230 Login successful.

Remote system type is UNIX.

Using binary mode to transfer files.

ftp> cd /mnt/md0

250 Directory successfully changed.

ftp> get alt-f.log

local: alt-f.log remote: alt-f.log

229 Entering Extended Passive Mode (|||30039|).

150 Opening BINARY mode data connection for alt-f.log (42122 bytes).

100% |***************************************| 42122      77.39 MB/s    00:00 ETA

226 Transfer complete.

42122 bytes received in 00:00 (53.13 MB/s)

ftp> bye

Anyway I need more info than the one available in the log.

Please telnet or ssh the box, login as the 'root' user, same password as the webUI, execute and post the output of the following commands:

mdadm --examine /dev/sda2 /dev/sdb2

mdadm --detail /dev/md0

 

Thanks

[René Beauchemin]

Hi,

I've got the exact same problem, with a DNS-321 running ALT-F version 0.1RC3 and two new HD.

Should I start all again ( already lost a week copying all the data from the old HD...

Here is the results of the commands you asked to run:

# mdadm --examine /dev/sda2 /dev/sdb2

mdadm: No md superblock detected on /dev/sda2.

/dev/sdb2:

          Magic : a92b4efc

        Version : 1.2

    Feature Map : 0x1

     Array UUID : 8fc73d02:b29a220f:84dbef52:380d572a

           Name : DNS-321:0  (local to host DNS-321)

  Creation Time : Mon Apr  7 19:57:47 2014

     Raid Level : raid1

   Raid Devices : 2

 Avail Dev Size : 5859480496 (2794.02 GiB 3000.05 GB)

     Array Size : 5859480224 (2794.02 GiB 3000.05 GB)

  Used Dev Size : 5859480224 (2794.02 GiB 3000.05 GB)

    Data Offset : 2048 sectors

   Super Offset : 8 sectors

          State : clean

    Device UUID : 027ac196:7100821b:9ece016d:79b41209

Internal Bitmap : 8 sectors from superblock

    Update Time : Wed Apr  9 19:46:41 2014

       Checksum : 28bf36a4 - correct

         Events : 448306

   Device Role : Active device 0

   Array State : A. ('A' == active, '.' == missing)

# mdadm --detail /dev/md0

/dev/md0:

        Version : 1.2

  Creation Time : Mon Apr  7 19:57:47 2014

     Raid Level : raid1

     Array Size : 2929740112 (2794.02 GiB 3000.05 GB)

  Used Dev Size : 2929740112 (2794.02 GiB 3000.05 GB)

   Raid Devices : 2

  Total Devices : 1

    Persistence : Superblock is persistent

  Intent Bitmap : Internal

    Update Time : Wed Apr  9 19:46:41 2014

          State : active, degraded

 Active Devices : 1

Working Devices : 1

 Failed Devices : 0

  Spare Devices : 0

           Name : DNS-321:0  (local to host DNS-321)

           UUID : 8fc73d02:b29a220f:84dbef52:380d572a

         Events : 448306

    Number   Major   Minor   RaidDevice State

       0       8       18        0      active sync   /dev/sdb2

       1       0        0        1      removed

#

[João Cardoso]

On Thursday, April 10, 2014 12:58:04 AM UTC+1, René Beauchemin wrote:

Hi,

I've got the exact same problem, with a DNS-321 running ALT-F version 0.1RC3 and two new HD.

Should I start all again ( already lost a week copying all the data from the old HD...

I don't understand, is your data already on the RAID? Do you still have a backup?

The procedure I give below should not affect it, but I'm assuming that your problem is similar to Martin's, I don't have your box logs/screenshots (System->Utilities->View Logs->System Configuration, hit the Download button at the page end)

 

Here is the results of the commands you asked to run:

# mdadm --examine /dev/sda2 /dev/sdb2

mdadm: No md superblock detected on /dev/sda2.

This is the issue, sda2 was not added to the RAID, don't know why.

Your RAID doesn't appears in the RAID Maintenance section of the RAID webUI, does it? I suspect it does not, a patch is needed to fix that (I think that it's in the bug reports or old issues on sourceforge tickets https://sourceforge.net/p/alt-f/_list/tickets).

But adding the missing sda2 component to the RAID using the command line is easy:

mdadm /dev/md0 --add /dev/sda2

But *first* verify under the Disk Partitioner that sda2 is a partition of type RAID with ~3TB, and that in the Disk Filesystems webUI it does not has a filesystem on it  ("none" should appear under the FS column) and it is not mounted  (no * under the Mnt column) . It should be similar to Martin's first and third posts screen shots.