Questions tagged [superblock]

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votes
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Btrfs super-recover says all superblocks are good but mount disagrees

I have an external drive formatted with BTRFS that seems refuses to mount: $ sudo mount -vs -t btrfs -o ro,recovery,errors=continue /dev/sdb2 /media/user/dir mount: /dev/sdb2: can't read superblock ...
2
votes
0answers
38 views

Why do my software RAID1 superblocks keep getting corrupted and how can I prevent this?

How might I be repeatedly corrupting my superblocks on RAID1 I have had two occasions in the past six months of RAID1 root arrays becoming unusable because of problems with the superblock. ...
2
votes
1answer
96 views

How to recover when ext4 superblock's inode count is reset to 0

We tried to resize a 15TB ext4 partition to 16TB and accidentally managed to hit an old (and fixed in newer releases) off-by-one bug of ext4_resize_fs() which causes inode count to reset to 0 thanks ...
2
votes
0answers
1k views

EXT4 app2sd link2sd partition repair with bad superblock . Partition cannot be mounted on Android but will mount RW w/ su on Linux Live

I have a 128gb micro sd formatted as ext4 10gb for app2sd 2nd ext4 partition ( p2 ) on my Android 6 phone . All my apps ( 80%) stay on that ext4 partition . Now app2sd cant load this partition - "...
2
votes
0answers
525 views

fsck fails frequently(after each 3-4 boots)

I have triple boot System(Ubuntu,Kali,Win7) and I mostly use Kali linux(4.6.0-kali1-amd64). After each 3 or 4 successful boots i get this error -> fsck.ext4: Superblock checksum does not match ...
2
votes
1answer
598 views

Relation between “Block Size”and “Upper Limits” in ext2

A similar looking question asks for the reason why the upper file limit could be 2 TB in ext2. I am trying to understand but the Documentation on ext2 but find this hard. Please correct me if I'm ...
2
votes
0answers
2k views

Superblock corruption on every boot

I have a Linux Mint 12 install on my laptop. Yesterday I powered it off like I always do and this morning when I started it I was greeted by an error screen. (Translated from Swedish) Fatal errors ...
1
vote
1answer
602 views

restoring raid filesystem

I ended up with my 3-disk mdadm array not being able to assemble because each of the disks had corrupted superblocks. I tried to force reassembling the array using mdadm --create This resulted in ...
1
vote
0answers
895 views

Overwritten superblock and dd backup files recovery

Good day, yesterday I tried to extend my swap partition ('cause suspend/hibernation didn't work) and I needed to decrease size of my debian linux disk (I don't ever remember if it was ext2/et3 or what)...
0
votes
1answer
713 views

How to fix external HD?

I have an external HD which is divided into two partitions: an exFAT with 700GB and a LUKS partition with 300GB. I was copying from my computer to the luks partition but it got slow and stucked so I ...
0
votes
1answer
30 views

Will relabeling a partition destroy data

Is it possible to relabel a partition that was accidentally relabeled with a different file system type? We think we accidentally relabeled sdb1 as XFS when it should have been labeled lvm(8e), after ...