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comment Recover RAID 5 data after created new array instead of re-using
Sorry it's been a while I have been out of town. I tried the e2fsck -b xxx /dev/md0 but the result is the same - invalid superblock. I have tried adding the drives to windows machine and running ZAR, ReclaiMe, R-Studio = each of these works for a couple of days and then comes up with weird results. I am back to trying to re-create the array using linux in hopes that it will be possible to recover something. I have another question... Is it possible to get the mdadm to re-create the array from 2 drives (assuming 1 is faulty) and use a disk image on a large drive?
Jan
19
comment Recover RAID 5 data after created new array instead of re-using
As I remember, after I created the raid 5 using mdadm, it just showed empty partition in the disk utility. I formatted it and mounted it to /media/Raid using the disk utility UI
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18
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Jan
18
comment Recover RAID 5 data after created new array instead of re-using
Attached the info at the bottom of the original post - I just run fsck.ext4 with every returned block but the result is the same. Regarding the disk utility.. I just used it to create and mount the raid partition from UI. I a not sure what exactly did that do to the assembled Raid though.
Jan
18
revised Recover RAID 5 data after created new array instead of re-using
added 1365 characters in body
Jan
18
comment Recover RAID 5 data after created new array instead of re-using
Thanks Shane, I just appended the output to the bottom of the original post. While the array is rebuilding the output is still the same as it was before I kicked off re-creating
Jan
18
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Jan
18
revised Recover RAID 5 data after created new array instead of re-using
Added the output from fsck.ext4 to the bottom
Jan
18
comment Recover RAID 5 data after created new array instead of re-using
I did the original formatting in the UI. My fstab shows the following entry: /dev/md0 /media/Raid ext4 defaults 1 2 I used this to remount the md0 to /media/Raid after reboot so I assume the UI has formatted it to ext4
Jan
18
comment Recover RAID 5 data after created new array instead of re-using
Hi Shane, sorry for dumb qs. The array is still rebuilding but I remember running fsck.ext4 /dev/md0 and it again gave me no superblock error. DiskUtility (the UI tool for ubuntu) showed the raid was running fine but the partition was empty. I know I am swamping the forum with qs so if you don't mind could we possibly take it offline and I will post the answer later? My email is mushegh at hotmail dot com. Also it seems that I have formatted the partition through the UI too.
Jan
18
comment Recover RAID 5 data after created new array instead of re-using
I don't have the mdstat and mail. What I have is the bash history. The cmd line I used when created the array is quite straightforward - mdadm --create --verbose /dev/md0 --level=5 --raid-devices=3 /dev/sdd1 /dev/sde1 /dev/sdf1 --force. I run this last night after zeroing the superblocks on the raid disks and it finished fine but mdadm --examine /dev/md0 shows no superblock. Also, fsck also tells me that there is no superblock.
Jan
18
comment Recover RAID 5 data after created new array instead of re-using
Hi Shane/folks, I just finished backing up the disks and tried to re-create the raid with what I think were the original params = the defaults with the disk order which I think is the right one. The process finished ok but again no superblock in the raid. As far as I can tel the only diff in the params is the name of the raid. Can it mess things up? I am in the process of re-creating the raid with the same params and the original name in hopes it will fix the problem.:(
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comment Recover RAID 5 data after created new array instead of re-using
I don't even know what to say... BRAVO!!! Kudos to Shane Madden. I am going to backup the disks and get started with your suggestions. Thanks, no really a big thanks!!!
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