Recovering ext4 superblocks
Recently, my external hard drive enclosure failed (the hard drive itself powers up in another enclosure). However, as a result, it appears its EXT4 file system is corrupt.
ext4
How can I mount a filesystem, mapping userids?
I can successfully mount an ext4 partition, the problem is that all the files on the partition are owned by the user with userid 1000. On one machine, my userid is 1000, but on another it’s 1010. My username is the same on both machines, but I realise that the filesystem stores userids, not usernames.
Data recovery from an accidental format on ext4 partition
When I was installing Mint Debian edition unlike the classic edition, the installation automatically formated my home partition when I did not specify to format.
How to use the new ext4 inline data feature? (storing data directly in the inode)
If I read the ext4 documentation correctly, starting from Linux 3.8 it should be possible to store data directly in the inode in the case of a very small file.
How to make an ext4 formatted usb drive with full RW permissions for any linux machine?
I want to format my USB stick to ext4 and just use as I would any other typical non-linux format drive (FAT32, exFAT, NTFS).
How do I find the offset of an ext4 filesystem?
I have a failing hard drive that is unable to write or read the first sectors of the disk. It just gives I/O errors and that is all there is. There are other areas on the disk that seem (mostly) fine.
I am trying to mount a partition (ext4) and see if I can access some files I would like to recover. Since the mount command supports an offset option, I should be able to mount the filesystem even though the partition table is unreadable and unwriteable. The problem is how to find the offset. None of the ext4 tools seems to have this particular feature.
Cannot remove file: “Structure needs cleaning”
I have an external hard drive which is encrypted via LUKS. It contains an ext4 fs.
Copying or restoring crtime for files/directories on ext4fs filesystem
I wonder if there are ways to copy or restore crtime (creation time) for inodes/files/directories in Linux in 2020. I’ve accidentally deleted a folder while I still have a full disk backup, but neither cp -a, nor rsync can restore/copy files/directories crtimes.
Why does “ls” take extremely long in a small directory that used to be big? How to fix this?
I’m running Arch Linux, and use ext4 filesystems.