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striker008 avatar Server

Bad magic number in super-block....Rsync Issue

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striker008

I am struggling to figure out if I setup this 4TB external drive wrong. Unfortunately, it now is like 95% full, so I don't want to start over. The issue started with not being able to run rsync properly, but I believe the error might be deeper, but I don't know what to do.

output of FSCK for /dev/sda1:

sudo fsck /dev/sda1 fsck from util-linux 2.31.1 e2fsck 1.44.1 (24-Mar-2018) /dev/sda1: clean, 8491/244195328 files, 884517026/976754176 blocks

output of FSCK for /dev/sda:

sudo fsck /dev/sda fsck from util-linux 2.31.1 e2fsck 1.44.1 (24-Mar-2018) ext2fs_open2: Bad magic number in super-block fsck.ext2: Superblock invalid, trying backup blocks... fsck.ext2: Bad magic number in super-block while trying to open /dev/sda

The superblock could not be read or does not describe a valid ext2/ext3/ext4 filesystem. If the device is valid and it really contains an ext2/ext3/ext4 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsck -b 8193 <device> or e2fsck -b 32768 <device>

Found a gpt partition table in /dev/sda

Output of MKE2FS:

sudo mke2fs -n /dev/sda mke2fs 1.44.1 (24-Mar-2018) Found a gpt partition table in /dev/sda Proceed anyway? (y,N) y Creating filesystem with 976754645 4k blocks and 244195328 inodes Filesystem UUID: 90d531b0-48d6-45d3-8a05-edfa6a2a4411 Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000, 214990848, 512000000, 550731776, 644972544

Trying to repair block with backup:

sudo fsck -b 32768 /dev/sda fsck from util-linux 2.31.1 e2fsck 1.44.1 (24-Mar-2018) fsck.ext2: Bad magic number in super-block while trying to open /dev/sda

The superblock could not be read or does not describe a valid ext2/ext3/ext4 filesystem. If the device is valid and it really contains an ext2/ext3/ext4 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsck -b 8193 <device> or e2fsck -b 32768 <device>

Found a gpt partition table in /dev/sda

I really don't know what to do beyond this point....appreciate the help in advance.

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Gerald Schneider
You wrecked your filesystem on sad1 when you created another one on sda. Start over.
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