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Questions tagged [ext4]

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ext4 (fourth extended filesystem) is a journalling file system for Linux, developed as the successor to ext3. Use this tag for question that are ext4 specific, generic file system related questions should use tag [filesystem]

1,020 questions
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1 answer
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On this filesystem, there are enough inodes already, I only need more filesystem size: # df -i Filesystem Inodes IUsed IFree IUse% Mounted on /dev/mapper/spinning-backup ...
klaus thorn's user avatar
  • 191
9 votes
2 answers
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I'm new to Linux, yet am now committing to Linux, probably formatting HDDs to run the ext4 file-system, for (almost) all work. I need to keep one Windows machine running an NTFS file-system for a few ...
Right Angle Media's user avatar
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O_DIRECT allows writes on a file to proceed with i_rwsem in read mode. Let's say I have allocated 100 fs blocks(4K) for a file with posix_fallocate(). This now becomes an unwritten extent for the file....
mhsquare's user avatar
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2 votes
1 answer
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I’m running a Proxmox VM with a qcow2 disk (Ubuntu guest, ext4 filesystem). I tried to recover a recently deleted file using extundelete and ext4magic, but both tools failed to find the file, even ...
Sam Stevenson's user avatar
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1 vote
2 answers
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I have an old 16GB SD card that started giving I/O errors, known it's gone bad, I dumped all the content to an image file to see what I could restore, and the Disk manager alerted me that 16.1MB were ...
Mauro F.'s user avatar
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0 votes
1 answer
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I'm trying to understand how ext4 does some things. I have a small ext4 partition with block size 1024 (not the default 4096). I create a directory there and delete lost+found, just to get it out of ...
rd2's user avatar
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-5 votes
1 answer
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On our RHEL 7.9 systems, we have noticed some strange behavior. Each machine has 4 disks, each with an 8TB capacity, but we are only using about 1.9TB on a partition. What doesn’t make sense is that ...
yael's user avatar
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I am working on a ext4 file-system tool that aims to delete files such that they are not recoverable later on. My goal is to clear the inode metadata of a deleted file, but despite my efforts, the ...
Dhruv's user avatar
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