Error during RAID build (UDOO quad OMV 0.4.17) - Failed to execute command sudo omv-mkraid / unexpected failure opening /dev/md0

lolofufu · 17. April 2015

Hey everyone,

I'm trying to setup a RAID on my UDOO quad using OMV 0.4.17 and 2 USB HDDs.

I wiped the HDD under Storgae -> Physical Discs.
Then i went to Storage -> RAID Management and tried to setup the RAID.

When I select STRIPE, the error message is:

Code

Failed to execute command 'sudo omv-mkraid /dev/md0 -l stripe -n 2 /dev/sda /dev/sdb 2>&1': mdadm: chunk size defaults to 512K mdadm: unexpected failure opening /dev/md0


Error #4000:
exception 'OMVException' with message 'Failed to execute command 'sudo omv-mkraid /dev/md0 -l stripe -n 2 /dev/sda /dev/sdb 2>&1': mdadm: chunk size defaults to 512K
mdadm: unexpected failure opening /dev/md0' in /var/www/openmediavault/rpc/raidmgmt.inc:261
Stack trace:
#0 [internal function]: RaidMgmtRpc->create(Array)
#1 /usr/share/php/openmediavault/rpc.inc(265): call_user_func_array(Array, Array)
#2 /usr/share/php/openmediavault/rpc.inc(98): OMVRpc::exec('RaidMgmt', 'create', Array)
#3 /var/www/openmediavault/rpc.php(44): OMVJsonRpcServer->handle()
#4 {main}

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When I select MIRROR, the error message is:

Code

Failed to execute command 'sudo omv-mkraid /dev/md0 -l mirror -n 2 -N mirror /dev/sda /dev/sdb 2>&1': mdadm: Note: this array has metadata at the start and may not be suitable as a boot device. If you plan to store '/boot' on this device please ensure that your boot-loader understands md/v1.x metadata, or use --metadata=0.90 mdadm: size set to 488222528K mdadm: creation continuing despite oddities due to --run mdadm: unexpected failure opening /dev/md0


Error #4000:
exception 'OMVException' with message 'Failed to execute command 'sudo omv-mkraid /dev/md0 -l mirror -n 2 -N mirror /dev/sda /dev/sdb 2>&1': mdadm: Note: this array has metadata at the start and
    may not be suitable as a boot device.  If you plan to
    store '/boot' on this device please ensure that
    your boot-loader understands md/v1.x metadata, or use
    --metadata=0.90
mdadm: size set to 488222528K
mdadm: creation continuing despite oddities due to --run
mdadm: unexpected failure opening /dev/md0' in /var/www/openmediavault/rpc/raidmgmt.inc:261
Stack trace:
#0 [internal function]: RaidMgmtRpc->create(Array)
#1 /usr/share/php/openmediavault/rpc.inc(265): call_user_func_array(Array, Array)
#2 /usr/share/php/openmediavault/rpc.inc(98): OMVRpc::exec('RaidMgmt', 'create', Array)
#3 /var/www/openmediavault/rpc.php(44): OMVJsonRpcServer->handle()
#4 {main}

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I already tried it with different HDD, with the same result.

Any ideas?

Many thanks for your help in advance!

lolofufu

ryecoaaron · 17. April 2015

What is the output of: lsmod | grep -i raid

lolofufu · 17. April 2015

no output from "lsmod | grep -i raid", because there is no RAID.

ryecoaaron · 17. April 2015

Yep, putty works. No output means no raid modules loaded. I'm guessing the udoo kernel doesn't have raid drivers set in the config. There might be a config.gz file in /proc/ or config* file in /boot/ to check. What is the output of the following:

ls -al /proc/config*
ls -al /boot/

lolofufu · 18. April 2015

Hey ryecoaaron,

root@openmediavault:~# ls -al /proc/config*

Code

-r--r--r-- 1 root root 18644 Apr 18 12:32 /proc/config.gz

root@openmediavault:~# ls -al /boot/

Code

total 4040
drwxr-xr-x  2 root root       4096 Nov  5  2013 .
drwxr-xr-x 23 1000 openvpn    4096 Nov 14  2013 ..
-rw-r--r--  1 root root    4120920 Nov 14  2013 uImage

regards, lolofufu

ryecoaaron · 18. April 2015

zcat /proc/config.gz | grep -i raid

lolofufu · 18. April 2015

Hey,

root@openmediavault:~# zcat /proc/config.gz | grep -i raid

Code

# CONFIG_RAID_ATTRS is not set
# CONFIG_BLK_DEV_3W_XXXX_RAID is not set
# CONFIG_SCSI_AACRAID is not set
# CONFIG_MEGARAID_NEWGEN is not set
# CONFIG_MEGARAID_LEGACY is not set
# CONFIG_MEGARAID_SAS is not set
# CONFIG_SCSI_PMCRAID is not set

regards, lolofufu

ryecoaaron · 18. April 2015

There is the problem. No mdadm drivers in the kernel. You will have to find a different kernel with the drivers or compile one on your own.

Error during RAID build (UDOO quad OMV 0.4.17) - Failed to execute command sudo omv-mkraid / unexpected failure opening /dev/md0

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