Questions tagged [ext4]

The ext4 or fourth extended filesystem is a journaling file system for Linux, developed as the successor to ext3.

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What is difference between tune2fs and blockdev for create read-only file system?

What is difference between tune2fs -O ^read-only and blockdev --setro? Did i missed something?
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Hardware failure symptoms

I believe I have encountered an hardware failure, but would like to be sure of what component/s is causing the problem. I'm running a raspberry pi zero. When I have experienced this error, I was ...
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Customize Ubuntu Installation [closed]

I couldn't find any information about the topic. I want to install the new version (21 beta) but without the office package. Yes I know how to uninstall it after it's fully installed by default but I'...
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“0 bytes free” after partition resizing, but there is much unused space [duplicate]

Using GParted, I resized two Ext4 partitions on my external HDD, making them smaller. But now the OS says there is no space available on both of them. This is the outptut of df -H for those partitions....
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Convert exFat HDD to ext4

I have an external hard disk which was formatted as ext4. I recently connected this HDD to a new system and all of a sudden, the format changed to exFat. I have no idea how this happened. Is it ...
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What happened to e2compr?

Is it a part of the kernel now? Can I enable selective file compression for either ext2, or ext3, or ext4? chattr +c filename does not seem to work. I'm ok with custom kernels but it'll cause some ...
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EXT4-fs error after software update on Dell Latitude E7470 Ubuntu20.04

Thanks to check image for the error. My laptop just keep crashing. Thanks for the help. Error image
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Is it safe to run tune2fs -l /dev/device on a mounted filesystem?

Is it safe to run tune2fs -l /dev/device on a mounted filesystem? That is, listing the current values (I'm trying to do this to see if the filesystem is marked as clean). If it's ok, is there a ...
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Is there a formal way to get all hardlinks to a particular inode?

Suppose I wanted to purge an inode from the filesystem, and suppose I had multiple hardlinks scattered all over the place; I would need to track all of them down before I could free space from my ...
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Offline shrink EXT4 in terminal and recover the SD card I just killed

I Installed ubuntu (20.04 LTS ARM64) preinstalled image on to a SD card. I had a few issues at this stage leading me to keep reinstalling the OS and try again, one particular issue ended with EXT4-FS ...
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Ubuntu 18.04 suddenly Shut Down with ext4-fs error (device sda6)

04 in dual boot with Windows 8.1 and i am using it for a long time without any issues. But yesterday while using ubuntu, my system suddenly black screened and got the errors as shown in the screenshot....
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Noacl mount option has no effect. Trying to let all users write to ext4 on USB drive by default

When I click on a USB drive filesystem in Files to mount it, this mounts it to /media/$USER/label. This lets my user read/write to the drive if it's NTFS or FAT32, but fails to let my user read/write ...
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I accidentaly changed file system type and wrote a couple files. How do I get my old files back? [duplicate]

So, I had a windows laptop that I installed Linux onto. Fedora onto the storage drive, and Kubuntu on a separate NVMe drive. A lot of my data was on the Fedora drive, then I put the old Windows drive ...
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My /Root says I only have like I am low on space, someone help me figure this out? [duplicate]

My /dev/sda6 says I only have 4.7G available but still use% is 99? It does not make sense. Can someone help me with this? waybackdrm@dolansroadbike:~$ df -h Filesystem Size Used Avail Use% ...
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EXT4-fs error scan in Ubuntu 20.04 / Dell Inspiron 5539

I installed Ubuntu 20.04 in a Dell Inspiron 5539. An ext4-fs error scan is running since already 14hs. Should I let it run or should I interrupt the process. I have my USB to boot a Live Ubuntu, ...
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Recover deleted files EXT4

I made a mistake and rsynced with --delete. How I can recover all the deleted files? Please Help. This machine has my PhD project. i use testdisk /dev/vda1, select the disk,-> select NON ...
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How to recover formatted ext4 created on lvm partition

I need to recover a ext4 that was created on a lvm filesystem as I accidentally formatted it by mistake from ext4 to ntfs using disks in Ubuntu desktop The lvm is a 7tb partition made up of 1tb, 2tb ...
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Unable to expand my partition [duplicate]

Im on gparted live with 50GB unallocated partition, but my linux partition can't be expanded.image
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159 views

ext4 recovery (extundelte error: malloc(): invalid next size (unsorted))

After accidentally deleting mp4 files I created an image of the mounted 5-TB-partition for recovery. It has been quite some time between deletion and imaging, as I did not notice the issue very ...
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How short path to convert my home partition(encrypted) ext4 to btrfs?

What steps should I take to convert my / home (ext4) partition to btrfs It will be worth it, because in the past (2 years or more) I have used this file system, but I had some problems, especially ...
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How to run a command when ext4 errors are detected?

I've experienced some problems in the past days. My root partition was randomly remounting ro (read-only) when some ext4 errors were detected. I've got another HDD mounted at /mnt/files and everything ...
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Unable to install Ubuntu on M.2 drive

I have Secure Boot and CSM disabled, Windows Features(?) set to Other OS, and UEFI related settings to UEFI Only. I have nothing else installed other than Ubuntu 20.04 on another drive which is HDD ...
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ssh+sudo+dump on server cannot be restored locally

I have inherited an Ubuntu 14.04 server that I need to create a sandboxed copy of locally in VirtualBox to experiment with as part of preparing to upgrade to Ubuntu 20.04, as we strongly suspect it is ...
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du reports wrong folder size [duplicate]

I am seeing some very strange results when using du on some of my folders. For example: #cd /storage/main_folder #du -h --max-depth=2 subfolder1 | grep subfolder2 1.8G subfolder1/subfolder2/...
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Unable to merge unallocated space on the same drive [duplicate]

I'm trying to merge to old partitions into one which will result 2.75TB. I tried using the default disk utility in Ubuntu 20.04 but can't seem to make one partition. I also tried Gparted but same ...
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Since the beginning of 2021 I get sometimes d????????? (question marks) for linux file permissions; a reboot resolves it

since the beginning of 2021 I get for my ubunut 18.04 bionic from time to time for different directories the situation that the directories and files show up with file permissions d????????? (nine ...
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383 views

ls: reading directory '.': Input/output error

The computer was working fine until this morning I found out the hdd (two 4TB disk in RAID0 made with mdadm) had Input/output error. Upon lsing the directory, I was met with: ls: reading directory '.':...
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EXT4 drives getting corrupted with “Windows Reserved” Partition

I'd really appreciate some help from experts. I dont know how its happening but, I have 2 stand alone single partition EXT4 drives that have been corrupted with "Windows Reserved" partitions....
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rsync from NTFS to ext4

I made a backup of a folder on an external NTFS drive on an ext4 folder and it went fine. The problem I have now is that rsync ignores already existing (and unchanged) files and syncs everything even ...
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Restoring a 512GB UHS micro SD card primary partition table and trying to make an ext2 partition

Ok, I had quite a rough time trying to make an ext2 partition in order to make an Ubuntu install on this card. At first I tried to format the second partition as ext4, but it never worked. after ...
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345 views

What's causing my “No space for directory leaf checksum” error?

I have a new Ubuntu 20.04 HPE DL360 Gen10 server to replace an old 16.04 HPE DL360 Gen9 server for running Graphite and Grafana. The old server had a 2 TB hardware RAID10 (4 x 1 TB SSDs) ext4 ...
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ext4 journaling process constantly accessing hard drive - does not go into sleep mode

I connected my new WD Elements 4TB hard drive to my Ubuntu 18.04 LTS server and eventually noticed that it never goes to sleep (normally happens after 30 min. idle time). I filled up the disk to 93% ...
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File system change

Is there any way to convert ext4 file system to fat32 file system by linux terminal. I now have Ubuntu focal fossa 20.04 is installed in my pc. Plz tell both methods if or not data loss.
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Help on extending root partition on extended file system

The following is the current partitioning on my friend's Ubuntu machine.Here, /dev/sda5 is root file system. This is located on extended file system. I want to add the 80GB ext4 (/dev/sda3) and 250GB ...
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Flashing an SD card with the dd command - Problem

I have a weird problem regarding the dd command. I have a wic image which has 4 partitions and which I flash onto an sd card with the following command: sudo dd if=<image.wic> of=/dev/sda bs=1M ...
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612 views

Mount Ext4 USB HDD

As a new user, I've just installed Lubuntu 20.10 64bit alongside Windows7 on a Intel Core 2 machine. I have a 1GB USB HDD, named LinuxExt4, which is formatted Ext4 and works as USB storage for a ...
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unable to mount ext4 pendrive in ubantu

I have formatted the pen drive in ext 4 version. And now the system is unable to mount it. I think I have ejected it before UN-mounting it. Please help
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Mount ext 4 read-only for old files and writable for new

How can I mount ext 4 file system so that "old files" mount in read-only and can't be deleted renamed attribute changed. But I can create "new files" in which I can write delete ...
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Recover deleted files from ext4 - Ubuntu 18.04

Well, I finally did it. I noticed a folder of my original drawings going back 4 months was missing from its usual spot. With reference photos and palettes and all, there are maybe 700 files in that ...
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455 views

ZFS pool to EXT4 partition

I installed zfsutils-linux and followed a tutorial of Canonical https://ubuntu.com/tutorials/setup-zfs-storage-pool#2-installing-zfs It doesn't work for me, I could manage to mount a pool which 4 HDDs ...
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Ubuntu Server 20.04.1 EXT4-fs error (device sdb1)

This comes from Main HD is full. Home Assistant on Docker installation After deleting /var/log/kern.log (which was about 8GB) I started monitoring it (tail) and nothing was written to it. All I can ...
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Data safety in ext4 as external HDD drive in ubuntu as main OS

HI pardon me for asking I have an external 1tb HDD drive that formated in ext4 my main system is in ext4 SSD either the thing is I wanted to know that is my data are safe not like really safe but just ...
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Ubuntu not mounting entire drive (anymore)

I can not update my ubuntu-server anymore. df says / has still only 4.7M, but lsblk says 74GB... Also to me, it looks like 74GB from /dev/sda3 are not mounted at all. So far these settings are all ...
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How to backup a folder from ubuntu so that it can be used afterwards on any file system and OS, by any user

Summary: I need to backup a folder (not the entire system) with 450 GB worth of content to many different external drives (NTFS and ext4). I'd like to archive it (tar) and compress it (maybe gzip?) ...
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Recover ext4 partition that has nothing written over it

I had a 2TB HD that was partitioned by ubuntu (file system: ext4 ). Then windows created two partitions for recovery on this drive. The HD had over 100GB of information and the new partitions only ...
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How do I create a journaled ext4 partition on /dev/sdb1 with journal data on /dev/sda4

I have a ubuntu OS, on a 256GB SSD with 150GB free raw disk left on /dev/sda and I want to add a new 8TB drive (/dev/sdb) as ext4/journaled but place the journal data on a new partition on /dev/sda, I ...
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Filesystem disappeared on a 2Tbyte SSD. “Bad magic number in super-block while trying to open”

I have an SSD that I backup files to. It has the name BACKUP_2TB. A few days ago backups stopped working. The name of the disk changed to ZONEMINDER and the partition on the disk disappeared although ...
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How would you make a “shared /home” partition for Windows and Ubuntu dual boot?

I have been using Ubuntu as my only OS for a couple of years now, but from time to time, due to compatibility issues with some software I want to use (mainly games or drawing programs) I have ...
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Ext4magic not listing files properly in the Home dir

I'm trying to recover files and directories accidentally deleted from my home folder. I have ext4magic working, as I can create and then delete a test file in a subdirectory 'undeltest' and then ...
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869 views

Permission denied while creating file or directory on /dev/sda1 in ext4 filesystem

I am not able to create a file or directory, it says permission denied. I am trying this in /dev/sda1. Here is the image from GParted & file manager : !

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