recover data from former RAID 1 drive
Clash Royale CLAN TAG#URR8PPP
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I had a RAID1 setup (md0), mirroring two 2TB drives (sdb, sdc). When trying to remove the RAID to use the disks individually with the data on them, I ran
mdadm --stop /dev/md0
mdadm --zero-superblock /dev/sdb1
mdadm --zero-superblock /dev/sdc1
mdadm --remove /dev/md0
However, afterwards, if I want to mount /dev/sdb1, I get the following: "wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error"
On my attempts to recreate the ext4 file system, I think I already nuked sdc beyond recovery (I ran mkfs.ext4 /dev/sdc1).
Is there still hope for me to recover my data from sdb and if so how?
Thanks for your time - let me know with which additional information I can help.
mdadm raid1
asked 1 hour ago
gro
62
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up vote
1
down vote
favorite
I had a RAID1 setup (md0), mirroring two 2TB drives (sdb, sdc). When trying to remove the RAID to use the disks individually with the data on them, I ran
mdadm --stop /dev/md0
mdadm --zero-superblock /dev/sdb1
mdadm --zero-superblock /dev/sdc1
mdadm --remove /dev/md0
However, afterwards, if I want to mount /dev/sdb1, I get the following: "wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error"
On my attempts to recreate the ext4 file system, I think I already nuked sdc beyond recovery (I ran mkfs.ext4 /dev/sdc1).
Is there still hope for me to recover my data from sdb and if so how?
Thanks for your time - let me know with which additional information I can help.
mdadm raid1
asked 1 hour ago
gro
62
New contributor
gro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Very carefully make a backup of the corrupted drive. Please excercise Extreme Caution:dd if=/dev/sdb of=/dev/blankdriveThen you can play around with trying to recover the journal structure, partition tables, etc.
– jmunsch
1 hour ago
Good call, I have it backed up and hope that someone can point me to a potential way of recovery. Thanks!
– gro
12 mins ago
what's the output ofmdadm --examine /dev/sdb1? also see: unix.stackexchange.com/a/72285/61110
– jmunsch
7 mins ago
mdadm: No md superblock detected on /dev/sdb1.EDIT: And guessing the offset didn't work :p
– gro
3 mins ago
add a comment |Â
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I had a RAID1 setup (md0), mirroring two 2TB drives (sdb, sdc). When trying to remove the RAID to use the disks individually with the data on them, I ran
mdadm --stop /dev/md0
mdadm --zero-superblock /dev/sdb1
mdadm --zero-superblock /dev/sdc1
mdadm --remove /dev/md0
However, afterwards, if I want to mount /dev/sdb1, I get the following: "wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error"
On my attempts to recreate the ext4 file system, I think I already nuked sdc beyond recovery (I ran mkfs.ext4 /dev/sdc1).
Is there still hope for me to recover my data from sdb and if so how?
Thanks for your time - let me know with which additional information I can help.
mdadm raid1
asked 1 hour ago
gro
62
New contributor
gro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I had a RAID1 setup (md0), mirroring two 2TB drives (sdb, sdc). When trying to remove the RAID to use the disks individually with the data on them, I ran
mdadm --stop /dev/md0
mdadm --zero-superblock /dev/sdb1
mdadm --zero-superblock /dev/sdc1
mdadm --remove /dev/md0
However, afterwards, if I want to mount /dev/sdb1, I get the following: "wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error"
On my attempts to recreate the ext4 file system, I think I already nuked sdc beyond recovery (I ran mkfs.ext4 /dev/sdc1).
Is there still hope for me to recover my data from sdb and if so how?
Thanks for your time - let me know with which additional information I can help.
mdadm raid1
mdadm raid1
asked 1 hour ago
gro
62
New contributor
gro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 1 hour ago
gro
62
New contributor
gro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 18 mins ago
asked 1 hour ago
gro
62
New contributor
gro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 1 hour ago
gro
62
asked 1 hour ago
gro
62
62
New contributor
gro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
gro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
gro is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Very carefully make a backup of the corrupted drive. Please excercise Extreme Caution:dd if=/dev/sdb of=/dev/blankdriveThen you can play around with trying to recover the journal structure, partition tables, etc.
– jmunsch
1 hour ago
Good call, I have it backed up and hope that someone can point me to a potential way of recovery. Thanks!
– gro
12 mins ago
what's the output ofmdadm --examine /dev/sdb1? also see: unix.stackexchange.com/a/72285/61110
– jmunsch
7 mins ago
mdadm: No md superblock detected on /dev/sdb1.EDIT: And guessing the offset didn't work :p
– gro
3 mins ago
add a comment |Â
Very carefully make a backup of the corrupted drive. Please excercise Extreme Caution:dd if=/dev/sdb of=/dev/blankdriveThen you can play around with trying to recover the journal structure, partition tables, etc.
– jmunsch
1 hour ago
Good call, I have it backed up and hope that someone can point me to a potential way of recovery. Thanks!
– gro
12 mins ago
what's the output ofmdadm --examine /dev/sdb1? also see: unix.stackexchange.com/a/72285/61110
– jmunsch
7 mins ago
mdadm: No md superblock detected on /dev/sdb1.EDIT: And guessing the offset didn't work :p
– gro
3 mins ago
Very carefully make a backup of the corrupted drive. Please excercise Extreme Caution:
dd if=/dev/sdb of=/dev/blankdrive Then you can play around with trying to recover the journal structure, partition tables, etc.– jmunsch
1 hour ago
Very carefully make a backup of the corrupted drive. Please excercise Extreme Caution:
dd if=/dev/sdb of=/dev/blankdrive Then you can play around with trying to recover the journal structure, partition tables, etc.– jmunsch
1 hour ago
Good call, I have it backed up and hope that someone can point me to a potential way of recovery. Thanks!
– gro
12 mins ago
Good call, I have it backed up and hope that someone can point me to a potential way of recovery. Thanks!
– gro
12 mins ago
what's the output of
mdadm --examine /dev/sdb1 ? also see: unix.stackexchange.com/a/72285/61110– jmunsch
7 mins ago
what's the output of
mdadm --examine /dev/sdb1 ? also see: unix.stackexchange.com/a/72285/61110– jmunsch
7 mins ago
mdadm: No md superblock detected on /dev/sdb1. EDIT: And guessing the offset didn't work :p– gro
3 mins ago
mdadm: No md superblock detected on /dev/sdb1. EDIT: And guessing the offset didn't work :p– gro
3 mins ago
add a comment |Â
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gro is a new contributor. Be nice, and check out our Code of Conduct.
gro is a new contributor. Be nice, and check out our Code of Conduct.
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Very carefully make a backup of the corrupted drive. Please excercise Extreme Caution:
dd if=/dev/sdb of=/dev/blankdriveThen you can play around with trying to recover the journal structure, partition tables, etc.– jmunsch
1 hour ago
Good call, I have it backed up and hope that someone can point me to a potential way of recovery. Thanks!
– gro
12 mins ago
what's the output of
mdadm --examine /dev/sdb1? also see: unix.stackexchange.com/a/72285/61110– jmunsch
7 mins ago
mdadm: No md superblock detected on /dev/sdb1.EDIT: And guessing the offset didn't work :p– gro
3 mins ago