Hello All!
I have a OMV based NAS I build with spare parts. Here are the relivant details.
- OMV 2.2.5 (running off of a 8GB USB Thumb Drive)
- AMD Phenom II x4 945 CPU, 4GB RAM, MSI MS7599 v3.1 MotherBoard
- 7x 2TB HDD of various makes and models Configured into a RAID-6 Array
Earlier this week one of the hard drive died taking the power supply with it. I have since replaced the Power Supply and the failed drive. I booted the system back up and logged onto the Web Interface. Under Storage -> Physical Disks, I can see 7 drive, the six working 2 TB HDD and the 8GB USB boot drive, however when I go to Storage -> RAID, no RAID is listed.
I was expecting to see the RAID-6 array in a degraded state, but nothing is listed. I am not a Linux expert, so I need help in figuring out if the data is still recoverable and how to go about getting the RAID array recognized and working again. I have a replacement drive for drive 7 on the way, but since I was using RAID-6, I should still be able to function.
My Questions:
- Is my RAID-6 array with my data still out there and if so how can I get OMV to recognize it so that I can access the Data?
-Uneventful
The following is the output from my SSH session on the server.
login as: root
root@omv's password:
Linux omv 3.2.0-4-amd64 #1 SMP Debian 3.2.81-1 x86_64
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Wed Jul 15 19:57:07 2015
root@omv:~# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : inactive sdc[0] sda[5] sdg[4] sdf[3] sde[2] sdd[1]
11720301072 blocks super 1.2
unused devices: <none>
root@omv:~# blkid
/dev/sdd: UUID="c803cd1c-123e-20b6-33b1-f08dfa085133" UUID_SUB="8f953c1e-fcd2-0716-d978-3cb2a38a34f9" LABEL="omv:Data" TYPE="linux_raid_member"
/dev/sde: UUID="c803cd1c-123e-20b6-33b1-f08dfa085133" UUID_SUB="c6a24cc9-b776-d524-3ce2-eeb129c16170" LABEL="omv:Data" TYPE="linux_raid_member"
/dev/sdg: UUID="c803cd1c-123e-20b6-33b1-f08dfa085133" UUID_SUB="7cfe7408-47d0-5f02-95a6-cacf00b05a01" LABEL="omv:Data" TYPE="linux_raid_member"
/dev/sda: UUID="c803cd1c-123e-20b6-33b1-f08dfa085133" UUID_SUB="40712e3d-d65e-25be-b225-3fb03de020ff" LABEL="omv:Data" TYPE="linux_raid_member"
/dev/sdf: UUID="c803cd1c-123e-20b6-33b1-f08dfa085133" UUID_SUB="acb098f2-704f-b691-6087-6c0fec34ddde" LABEL="omv:Data" TYPE="linux_raid_member"
/dev/sdc: UUID="c803cd1c-123e-20b6-33b1-f08dfa085133" UUID_SUB="8ba0b609-2a87-dec9-47ec-d88209632f5f" LABEL="omv:Data" TYPE="linux_raid_member"
/dev/sdb1: UUID="8b1879a6-8ba3-4f4e-8941-387bb382c884" TYPE="ext4"
/dev/sdb5: UUID="b73e3bac-d6a5-41ca-8eba-6bc765795107" TYPE="swap"
root@omv:~# fdisk -l
Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sda doesn't contain a valid partition table
Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdd doesn't contain a valid partition table
Disk /dev/sdg: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdg doesn't contain a valid partition table
Disk /dev/sdf: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdf doesn't contain a valid partition table
Disk /dev/sde: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sde doesn't contain a valid partition table
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sdc doesn't contain a valid partition table
Disk /dev/sdb: 7776 MB, 7776239616 bytes
255 heads, 63 sectors/track, 945 cylinders, total 15187968 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000c79da
Device Boot Start End Blocks Id System
/dev/sdb1 * 63 14458499 7229218+ 83 Linux
/dev/sdb2 14458500 15181424 361462+ 5 Extended
/dev/sdb5 14458563 15181424 361431 82 Linux swap / Solaris
root@omv:~# cat /etc/mdadm/mdadm.conf
# mdadm.conf
#
# Please refer to mdadm.conf(5) for information about this file.
#
# by default, scan all partitions (/proc/partitions) for MD superblocks.
# alternatively, specify devices to scan, using wildcards if desired.
# Note, if no DEVICE line is present, then "DEVICE partitions" is assumed.
# To avoid the auto-assembly of RAID devices a pattern that CAN'T match is
# used if no RAID devices are configured.
DEVICE partitions
# auto-create devices with Debian standard permissions
CREATE owner=root group=disk mode=0660 auto=yes
# automatically tag new arrays as belonging to the local system
HOMEHOST <system>
# definitions of existing MD arrays
ARRAY /dev/md0 metadata=1.2 name=omv:Data UUID=c803cd1c:123e20b6:33b1f08d:fa085133
root@omv:~# mdadm --detail --scan --verbose
ARRAY /dev/md0 level=raid6 num-devices=7 metadata=1.2 name=omv:Data UUID=c803cd1c:123e20b6:33b1f08d:fa085133
devices=/dev/sdc,/dev/sdd,/dev/sde,/dev/sdf,/dev/sdg,/dev/sda
root@omv:~#