Questions tagged [ext4]
Use this tag for all questions about the ext4 (fourth extended) file system, which has been the default file system in Ubuntu since 2009.
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systemrescue: testdisk doesn't find huge amount of deleted files
i accidently deleted a huge folder structure of my data on my notebook and emptied in a foolish manner my trash-bin without looking at the ~20GiB of data!
My last (dirvish-) backup was a few month ago,...
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Fake ext4 file creation dates for a large number of files by setting the system time
Recently, I downloaded a large number of photos from a cloud service to my local machine (Ubuntu 23.10). As is expected, the creation/birth date of those files was set to the actual download date. Now,...
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ext4 partition that was recovered After Windows installed their bootloader on it keeps on getting repartitioned
First, here is how my disks are setup physically for future reference:
SATA 1: 480 GB SSD (ext4, Running Ubuntu Server 20.04.1 LTS) (\dev\sda)
SATA 2: 4 TB HDD (ext4, Data) (\dev\sdb)
SATA 3: 512 GB ...
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Ubuntu 22 ext4 performance tuning (metadata)
I have Ubuntu 22 with 5.15.0-106-generic kernel.
I have a jbod with 60 hdd attached and working with a lot of small files.
I need that RAM will store only metadata and not file itself. I'm working ...
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Why is recovery mode not read-only?
I have just run rm and removed a file I am now attempting to recover - alas, I have not implemented a git version system. So, I am booting into recovery mode. The problem I have is I can write to the ...
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Buffer I/O error on dev sde2, logical block 9, lost sync page write
The interesting thing is this error message appears when I disconnect an USB flash drive that have a mounted filesystem in read-only mode (with mount -o ro).
Why there is a "write" in the ...
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Setting timeshift backup to harddrive, getting "Device not found" error
I'm trying to set the backup location for timeshift to a new external hard drive I just bought.
I formatted the drive w/ an ext4 filesystem w/ the command:
sudo mkfs.ext4 /dev/sde
I then ran the ...
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EXT4-fs error + ubsan array index out of bound
Suddenly this message started appearing every time I start my computer. When it appears, I have to restart the computer. What's the problem? Thanks
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partclone - what am I doing wrong?
I'm writing some backup scripts for my machines. Up until now, I have enjoyed using partclone, but now I've hit a snag.
On this machine there's a large MDADM RAID which contains one EXT4 partition. ...
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What is the field inside the struct ext4_inode responsible for providing pointers to where data is actually located on disk?
I've been reading the ext4 documentation on kernel.org and in the struct ext4_inode section it is show a field named i_block. It says "Block map or extent tree". Does this field contain ...
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I did mkfs.ext4 /dev/md0 without knowing it wipes the whole data
So guys I got panicked since my data gone, I tried the solution to use backup Superblock from this askubuntu page but still no luck. but when I tried sudo fsck.ext4 -vy /dev/md0 I got this message
/...
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Input/output error without disk failure
1 month ago I ran a python program on my ubuntu server which downloaded videos and cut them into images. I used urlretrieve to download the files and then I used opencv to cut them into single frames:
...
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Mount filesystem for a specific user at user login
I want to mount 2 existing ext4 filesystems for a specific user when the user logs in and ensure that they are dismounted when the user logs off. I am running on Ubuntu 22.04. The suggestions that I ...
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run e2fsck on boot of a persistent live lubuntu made with mkusb
I'm trying to run e2fsck on boot of a persistent live lubuntu to fix 'corrupt filesystem' error of a writable system partition (ext4) and I want to automate this somehow (so ideally I do not want to ...
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ext4 - Remove ability to encrypt disk even for root
I was wondering if this is possible: remove the ability to encrypt a disk/partition?
It occured to me that it's a possible attack vector to encrypt the disk with a key if you manage to get root access....
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