OMV OS Drive Failed, How to recover RAID

Hi all, I'm new to this forum.

I have been running OMV for just over a year. all was great until yesterday. I had the OS Drive fail.

I had done some googling and disconnected the 3 RAID 5 Drives and did a fresh OMV install onto a new OS disk. I have done the upgrades and once happy shutdown and re-attached the raid drives.

When i login via the GUI I can see the Raided disks but can't access these please help

root@snowdon:/# mdadm --detail /dev/md0


/dev/md0:


        Version : 1.2


  Creation Time : Tue Apr 19 10:53:32 2016


     Raid Level : raid5


     Array Size : 3906766848 (3725.78 GiB 4000.53 GB)


  Used Dev Size : 1953383424 (1862.89 GiB 2000.26 GB)


   Raid Devices : 3


  Total Devices : 3


    Persistence : Superblock is persistent


  Intent Bitmap : Internal


    Update Time : Tue Apr 19 10:54:51 2016


          State : clean, resyncing (PENDING) 


 Active Devices : 3


Working Devices : 3


 Failed Devices : 0


  Spare Devices : 0


         Layout : left-symmetric


     Chunk Size : 512K


           Name : snowdon:Nixdy  (local to host snowdon)


           UUID : 5400d348:93002dd3:89c85e22:c933904c


         Events : 19


    Number   Major   Minor   RaidDevice State


       0       8       48        0      active sync   /dev/sdd


       1       8       32        1      active sync   /dev/sdc


       2       8       16        2      active sync   /dev/sdb


root@snowdon:/#

Hi yes I have restarted the resync, however I can't access the RAID since the new OS Install

root@snowdon:/# mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Tue Apr 19 10:53:32 2016
Raid Level : raid5
Array Size : 3906766848 (3725.78 GiB 4000.53 GB)
Used Dev Size : 1953383424 (1862.89 GiB 2000.26 GB)
Raid Devices : 3
Total Devices : 3
Persistence : Superblock is persistent

Intent Bitmap : Internal

Update Time : Tue Apr 19 12:38:53 2016
State : clean, resyncing
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0

Layout : left-symmetric
Chunk Size : 512K

Resync Status : 3% complete

Name : snowdon:Nixdy (local to host snowdon)
UUID : 5400d348:93002dd3:89c85e22:c933904c
Events : 364

Number Major Minor RaidDevice State
0 8 48 0 active sync /dev/sdd
1 8 32 1 active sync /dev/sdc
2 8 16 2 active sync /dev/sdb

Hi, When I go into WEBUI I can go into Raid Settings and see the Raided three disks, however when I go into FileSystems I can only see the OS Disk.

Also when I go into Shares to create a new Share the Volume is not displaying

I will let the resend finish looks like it will be a while

Hi All resyncing has been running all day, But I still can't see the Raid in Shares as a Volume do I need the resend to finish first. I have uploaded some screenshots of what my issue is, hopefully these will help

root@snowdon:/# sudo cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sdd[0] sdb[2] sdc[1]
3906766848 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/3] [UUU]
[=======>.............] resync = 35.3% (690200064/1953383424) finish=1239.5min speed=16984K/sec
bitmap: 10/15 pages [40KB], 65536KB chunk

unused devices: <none>

Hi All, The resync has finally finished. I can see the RAID Disks but I can't access them in filesystem or shared folders. Please advise. I have added in some screen shots. I need to get the data from these disks as its all work related items that I need to access.

Please can someone let me know what I'm doing wrong, From the initial Disk Failure I have renewed the Disk done a fresh OMV install updated acordingly then re-attached the raid disks, and this is as far as I can get

unused devices: <none>
root@snowdon:/# sudo cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sdd[0] sdb[2] sdc[1]
3906766848 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/3] [UUU]
bitmap: 0/15 pages [0KB], 65536KB chunk
unused devices: <none>

Please note when I go into shared folders it doesn't display the RAID volume

Bumping this thread, if anyone can give any advise here it would be really appreciated

I had a Hard Drive Failure on my system. Current set-up is 3 x 2 TB Barracuda Green disks Raided with the OS on a separate disk.

I installed a new Hard disk for the OS and did a fresh install, however I can't access the RAID Volume. I can see the raid in the GUI but can't access it, any help here would be really appreciated as I need the data on these disks.

root@snowdon:/# sudo cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sdd[0] sdb[2] sdc[1]
3906766848 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/3] [UUU]
bitmap: 0/15 pages [0KB], 65536KB chunk

Thanks Subzero79

root@snowdon:/# blkid
/dev/sdb: UUID="5400d348-9300-2dd3-89c8-5e22c933904c" UUID_SUB="3ba9adbf-131c-907a-c765-ced561cac6b3" LABEL="snowdon:Nixdy" TYPE="linux_raid_member"
/dev/sdd: UUID="5400d348-9300-2dd3-89c8-5e22c933904c" UUID_SUB="a082aebb-868f-a1fb-34a2-4ad00d3433fa" LABEL="snowdon:Nixdy" TYPE="linux_raid_member"
/dev/sda1: UUID="38f45487-8693-4b71-ad79-eb3d2797380b" TYPE="ext4" PARTUUID="00096f5f-01"
/dev/sda5: UUID="e853670d-1950-4a3a-bff8-79afe94905b2" TYPE="swap" PARTUUID="00096f5f-05"
/dev/sdc: UUID="5400d348-9300-2dd3-89c8-5e22c933904c" UUID_SUB="4814b415-3105-bae1-fe1b-6e83251226e6" LABEL="snowdon:Nixdy" TYPE="linux_raid_member"
/dev/md0: UUID="9261963a-f8e3-8fdc-c858-ef5936b06251" UUID_SUB="90d7d666-3d12-4884-cc83-6e0a86f82099" LABEL="snowdon:Nixdy" TYPE="linux_raid_member"

Afraid not, we just moved house so the latest backup I have is 4mths old. Only thing I have done is replace the failed OS disk then reinstalled OMV, so not sure how this could have happened

For info

root@snowdon:/# mdadm --readwrite /dev/md0
mdadm: failed to set writable for /dev/md0: Device or resource busy
root@snowdon:/# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sdd[0] sdb[2] sdc[1]
3906766848 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/3] [UUU]
bitmap: 0/15 pages [0KB], 65536KB chunk

unused devices: <none>
root@snowdon:/#

Hi ryecoaaron tried mount -a /dev/md0 but still can't access it

Output from mount

root@snowdon:/# mount

sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)

proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)

udev on /dev type devtmpfs (rw,relatime,size=10240k,nr_inodes=461692,mode=755)

devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)

tmpfs on /run type tmpfs (rw,nosuid,relatime,size=756560k,mode=755)

/dev/sda1 on / type ext4 (rw,relatime,errors=remount-ro,data=ordered)

tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)

cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd)

rpc_pipefs on /run/rpc_pipefs type rpc_pipefs (rw,relatime)