[SOLVED] RAID5 Missing?

Hello everyone i have or at least use to have a Raid5 in ext4 FS with 3 disk 1TB each, suddenly now is missing i am runnig a old version of OVM 0.2.7.4 after some forum check and google this is the data that i could collect so far:

fdisk -lu

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders, total 312581808 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: 0x0004caa7

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 308584447 154291200 83 Linux
/dev/sda2 308586494 312580095 1996801 5 Extended
/dev/sda5 308586496 312580095 1996800 82 Linux swap / Solaris

Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 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/sdd: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 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/sdd doesn't contain a valid partition table

WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 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/sdb doesn't contain a valid partition table

cat /proc/mdstat
Personalities :
md127 : inactive sdc[0](S) sdb[2](S) sdd[1](S)
2930284680 blocks super 1.2

unused devices: <none>

grep mdadm /var/log/syslog
Feb 19 11:47:01 nasdmz mdadm[6128]: DeviceDisappeared event detected on md device /dev/md/nasdmz:RAID5
Feb 19 11:52:51 nasdmz mdadm[1883]: DeviceDisappeared event detected on md device /dev/md/nasdmz:RAID5
Feb 19 13:49:19 nasdmz mdadm[2106]: DeviceDisappeared event detected on md device /dev/md/nasdmz:RAID5
Feb 19 14:20:44 nasdmz kernel: [ 1952.046471] mdadm: sending ioctl 1261 to a partition!
Feb 19 14:20:44 nasdmz kernel: [ 1952.046476] mdadm: sending ioctl 1261 to a partition!
Feb 19 14:20:44 nasdmz kernel: [ 1952.070001] mdadm: sending ioctl 1261 to a partition!
Feb 19 14:20:44 nasdmz kernel: [ 1952.070005] mdadm: sending ioctl 1261 to a partition!
Feb 19 14:20:44 nasdmz kernel: [ 1952.071244] mdadm: sending ioctl 1261 to a partition!
Feb 19 14:20:44 nasdmz kernel: [ 1952.071248] mdadm: sending ioctl 1261 to a partition!
Feb 19 14:20:44 nasdmz kernel: [ 1952.077297] mdadm: sending ioctl 1261 to a partition!
Feb 19 14:20:44 nasdmz kernel: [ 1952.077301] mdadm: sending ioctl 1261 to a partition!
Feb 19 14:20:44 nasdmz kernel: [ 1952.077426] mdadm: sending ioctl 800c0910 to a partition!
Feb 19 14:20:44 nasdmz kernel: [ 1952.077430] mdadm: sending ioctl 800c0910 to a partition!

so if anyone can give a hand, or drop some light over here would be great. Thanks for your time and for OMV.
Sorry for my english.

Ok, this is what hapens first

mdadm --assemble /dev/md127 /dev/sd[bcd] --verbose --force

and i get this

mdadm: looking for devices for /dev/md127
mdadm: cannot open device /dev/sdb: Device or resource busy

so i stop the the md127 with

mdadm --stop /dev/md127

then try again and:

mdadm: looking for devices for /dev/md127
mdadm: /dev/sdb is identified as a member of /dev/md127, slot 2.
mdadm: /dev/sdc is identified as a member of /dev/md127, slot 0.
mdadm: /dev/sdd is identified as a member of /dev/md127, slot 1.
mdadm: added /dev/sdd to /dev/md127 as 1
mdadm: added /dev/sdb to /dev/md127 as 2
mdadm: added /dev/sdc to /dev/md127 as 0
mdadm: /dev/md127 has been started with 2 drives (out of 3). This can't be good.

after that i try
mdadm --assemble --scan --force and get:

mdadm: /dev/md/nasdmz:RAID5 assembled from 1 drive - not enough to start the array

any idea? the data is lost

Thank for you time.

this is what it shows

cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md126 : inactive sdb[2](S)
976761560 blocks super 1.2

md127 : active raid5 sdc[0] sdd[1]
1953522688 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/2] [UU_]

So muchhh tahnks right now is rebuilding:

Personalities : [raid6] [raid5] [raid4]
md127 : active raid5 sdb[3] sdc[0] sdd[1]
1953522688 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/2] [UU_]
[>....................] recovery = 1.2% (12259328/976761344) finish=177.5min speed=90551K/sec

unused devices: <none>

it will take some time like you said 3hr almost but that is OK thanks again i will make a backup of the data afterward, one more question, it is safe to upgrade the system, there are any chance of losing any data?

Ok, thanks again for your time and patience with newbies on OMV .i will mark the threat as solve when the rebuilds ends. Thank you for all.