mdadm: No arrays found in config file

babunix · 08-12-2010, 05:30 AM

Hello friends,

OS redhat enterprise linux 5.1

I have create raid 5 array in redhat linux and it is working fine.
When i run

Code:

mdadm --assemble --scan -v

i get mdadm: No arrays found in config file

So i search in google and they say create mdadm.conf file
So i create /etc/mdadm.conf file

Code:

echo DEVICE /dev/sda{5,6,7} > /etc/mdadm.conf
mdadm --detail --scan >> /etc/mdadm.conf

Code:

cat /etc/mdadm.conf

DEVICE /dev/sda5 /dev/sda6 /dev/sda7
ARRAY /dev/md0 level=raid5 num-devices=3 UUID=f0163438:868539fc:8830ed40:0839a9f2

still i get same error.

What is wrong with me? How to resolve this?

Thanks,

mostlyharmless · 08-13-2010, 02:57 PM

In Redhat, is it?

(1) /etc/mdadm.conf

or

(2) /etc/mdadm/mdadm.conf

sem007 · 08-14-2010, 04:41 AM

@ mostlyharmless
As per mdadm man page configuration file is /etc/mdadm.conf

Code:

/etc/mdadm.conf
       The config file lists which devices may be scanned to see if they contain MD super block,  and  gives  identifying  information  (e.g.
       UUID) about known MD arrays.  See mdadm.conf(5) for more details.

@ babunix

i don't know why this error occure i am also face same so what i did.

Code:

mdadm -A /dev/md1 /dev/sda1 /dev/sdb1 /dev/sdc1

change raid and device as your env.

babunix · 08-16-2010, 06:50 AM

Hi sem007

Quote:

i don't know why this error occure i am also face same so what i did.

Code:

mdadm -A /dev/md1 /dev/sda1 /dev/sdb1 /dev/sdc1

change raid and device as your env.

it is working and assamble my array but question is still why system not able to access/read mdad.conf?

???

gajanan_ghosalkar · 07-09-2011, 04:11 AM

what should i do, if i want to answer any particular question as i know

gajanan_ghosalkar · 07-09-2011, 04:13 AM

Quote:

Originally Posted by mostlyharmless

In Redhat, is it?

(1) /etc/mdadm.conf

or

(2) /etc/mdadm/mdadm.conf

it is (1) /etc/mdadm.conf

TB0ne · 07-09-2011, 03:14 PM

Quote:

Originally Posted by gajanan_ghosalkar

what should i do, if i want to answer any particular question as i know

Might also want to pay attention to the dates on the threads...this one is almost a YEAR OLD.

zillur · 08-28-2018, 01:04 PM

Hi,
I am having the same problem.

Code:

 sudo mdadm --assemble --scan --force
mdadm: No arrays found in config file or automatically

I don't have any mdadm.conf in /etc or any subdirectory of /etc. Is it possible to be located in other directory? In the man page, it only mention about /etc.
But I have a megaraid card and driver.Here is my /var/log/messeages (raid_part)

Code:

Aug 27 22:52:18 genomics kernel: megaraid_sas 0000:02:00.0: Waiting for FW to come to ready state
Aug 27 22:54:03 genomics kernel: megaraid_sas 0000:02:00.0: Diag reset adapter never cleared megasas_adp_reset_fusion 3552
Aug 27 22:54:03 genomics kernel: megaraid_sas 0000:02:00.0: FW restarted successfully from megasas_init_fw!
Aug 27 22:54:33 genomics kernel: megaraid_sas 0000:02:00.0: Waiting for FW to come to ready state
Aug 27 22:54:33 genomics kernel: megaraid_sas 0000:02:00.0: Failed from megasas_init_fw 5543

Any suggestions?
Thanks in advance.
Best Rgerds
Zillur

TB0ne · 08-29-2018, 08:16 AM

Quote:

Originally Posted by zillur

Hi,
I am having the same problem.

Code:

 sudo mdadm --assemble --scan --force
mdadm: No arrays found in config file or automatically

I don't have any mdadm.conf in /etc or any subdirectory of /etc. Is it possible to be located in other directory? In the man page, it only mention about /etc.
But I have a megaraid card and driver.Here is my /var/log/messeages (raid_part)

Code:

Aug 27 22:52:18 genomics kernel: megaraid_sas 0000:02:00.0: Waiting for FW to come to ready state
Aug 27 22:54:03 genomics kernel: megaraid_sas 0000:02:00.0: Diag reset adapter never cleared megasas_adp_reset_fusion 3552
Aug 27 22:54:03 genomics kernel: megaraid_sas 0000:02:00.0: FW restarted successfully from megasas_init_fw!
Aug 27 22:54:33 genomics kernel: megaraid_sas 0000:02:00.0: Waiting for FW to come to ready state
Aug 27 22:54:33 genomics kernel: megaraid_sas 0000:02:00.0: Failed from megasas_init_fw 5543

Any suggestions?

This thread had been closed for SEVEN YEARS, before you reopened it. And while the mdadm.conf file can be located anywhere, it's typically not. And you don't provide any details about your system, version/distro of Linux, or if this is a new or existing issue. If you have a megaraid controller...are you *SURE* that the array is not defined in BIOS, and is presenting to your system as a single drive?

And you may want to open your own thread for your own question, providing these details.