First, I'm a newbie, and I'd made some stupid mistakes.
I have an external box with 4 HDs connect to addonics raid controller. I configured raid5 and everything worked, and transfered data to the new raid5 drive, but I had problem with some applications and decided to reinstall the server (ubuntu 8.10), forgetting to backup (stupid me), and now that my raid5 is gone. Is it still possible to get my raid5 back? I have some data that need to recover.
I tried this command and it shows:
sudo mdadm -E /dev/sdb
/dev/sdb:
Magic : a92b4efc
Version : 00.90.00
UUID : 3a18252f:231c699f:b62cfa25:81e9a18b (local to host bubuntu)
Creation Time : Fri Jul 3 07:38:26 2009
Raid Level : raid5
Used Dev Size : 1465138432 (1397.26 GiB 1500.30 GB)
Array Size : 4395415296 (4191.79 GiB 4500.91 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Update Time : Sun Aug 2 17:02:16 2009
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Checksum : 2a92f905 - correct
Events : 4
Layout : left-symmetric
Chunk Size : 256K
Number Major Minor RaidDevice State
this 1 8 48 1 active sync /dev/sdd
0 0 8 16 0 active sync /dev/sdb
1 1 8 48 1 active sync /dev/sdd
2 2 8 32 2 active sync /dev/sdc
3 3 8 64 3 active sync /dev/sde
sudo mdadm --create /dev/md0 --assume-clean --level=5 --chunk=64 --raid-devices=4 /dev/sdb /dev/sdc /dev/sdd /dev/sde
mdadm: Cannot open /dev/sdb: Device or resource busy
mdadm: Cannot open /dev/sdc: Device or resource busy
mdadm: Cannot open /dev/sdd: Device or resource busy
mdadm: Cannot open /dev/sde: Device or resource busy
mdadm: create aborted
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