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

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abnormal behavior of the kernel jbd2 process

I want to understand the mechanism of the journal of the ext4 file system on partitions with no free space. When a process (apache-tomcat, in my case) keeps making small additions to debug log files, ...
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Use `extundelete` to Restore Single File

There is a file which I didn't delete but it went missing (see http://unix.stackexchange.com/questions/249894/files-just-go-missing-on-ext4-partition-within-truecrypt-volume). I don't know the full ...
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24 views

Manualy Clean Second Partition In Android Link2SD

I use Link2SD in my Android Phone to link some of my apps into external second partition. My external total size is 32GB and I partition it into 2 partition. First Partition is using FAT32, and the ...
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How far in the past extundelete can go?

Yesterday I've accidentally deleted files from ext4 partition. During this time some downloading was running. If the content cannot be recovered I would be glad just for file names which were deleted. ...
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25 views

What data on a filesystem are really affected by powerloss?

Let my filesystem be ext4 mounted with data=journal. I don't fully understand what happens during power loss with filesystem in this case. So I have the following questions: Under which ...
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Will transfering a file between two different file systems incur generation loss?

I want to transfer few hundred GBs of .mkv files from my Linux ext4 file system to a NTFS formatted external hard drive and since I'm a multimedia major, I can't really afford to have any quality loss ...
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61 views

How to intentionally corrupt an ext4 filesystem?

I want to intentionally corrupt a file on an ext4 filesystem for testing. Is there a way to corrupt it by, say, leaving a file open and then rebooting?
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24 views

best way to copy content of NTFS partition to ext4 partition

I have a 263 GiB NTFS partition (with no free space) and want to copy all its files to a ext4 partition, that can't be larger than 294 GiB. I also need to copy NTFS Junctions as some kind of link. ...
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30 views

ext4 for data partition in Windows

I have moved my Windows user profile to a separate partition in order to share it with my linux install. I have originally tried to make a NTFS formatted data partition, but this creates some issues ...
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26 views

Sanity check ext partition size?

I ran resize2fs on a ext4 linux partition and I want to create a partition after it. However I want to sanity check that the size I put into fdisk afterwards was correct. What's the best way to ...
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59 views

“Bad magic number in super-block” with external HDD ext4 partition

I have a self-powered external HDD plugged through USB to my laptop. I deleted the single partition it had, intending to create a new encrypted partition. But I started getting an error once I ...
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3answers
100 views

Is file creation date visible and NTFS ADS metadata preserved on an EXT4 partition accessed via SMB?

I want to build a small backup server for my essential data. I'm interested in not losing any of the features that Windows/NTFS offers, like: File Creation Date ADS metadata(comments, tags, etc) ...
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38 views

Harddisks aren't recognized in new system (ubuntu 14)

I used to have a small home server with two attached USB disks, both formatted as ext4. Now I bought some new hardware, took the disks out of their USB case and installed them in the new server. In ...
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30 views

Sharing Folders over Network via EXT4 Dual Boot

This may be a complicated question, so I apologize in advance: Two computers on a home network: Tesla (dual boot linux Mint & Windows 10), Spitfire (Windows 10). Both have Kodi (XBMC). I want to ...
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1answer
25 views

Best method to copy big partition contents with many hard links

We had a LVM of almost 16TB with ReiserFS. We now want to add more disks, but we cannot continue using ReiserFS, as it has a maximum capacity of 16TB. This volume is being used to make incremental ...
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32 views

Unable to get ext2fsd to start automatically

I dual-boot between Ubuntu and Windows 8.1, and I am currently using ext2fsd to access files on my Linux drive and my shared file drive when I am booted up on Windows. However, I cannot get ext2fsd ...
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2answers
479 views

Want to create an ext4 partition from windows 10

I want to create ext4 partition in my internal hard disk from windows 10. I have seen many questions but all of them mention to partition with external hard disk.I wanted partition in internal ...
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27 views

Sync Microsoft OneDrive with a folder on EXT4 partition in dual boot scenario

I use Ubuntu and Windows 10 in dual boot scenario. As a student I received plenty of storage on Microsoft OneDrive and I would like to upload and sync my files. I primarily use Ubuntu and prefer to ...
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1answer
23 views

How to mount an ext4 filesystem with specific permissions?

I want to mount /home such that any user can read and write to his/her own directory but only a certain user has execute permission. We have a queue system (torque) and I want users not to be able to ...
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74 views

sfdisk geometry warning / how to repair

I have problem with superblock in an ext4 disk : usr@rpb ~ $ sudo fsck -v /dev/sda fsck from util-linux 2.20.1 e2fsck 1.42.5 (29-Jul-2012) ext2fs_open2: Numéro magique invalide dans le super-bloc ...
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94 views

Torrents downloaded with Deluge have started getting errors

Basically, while downloading (or more often after it's fully downloaded) deluge starts reporting an an error with the downloaded data. Status: file too short: reading p: 6690 b: 0 s: 262144 (read: ...
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1answer
79 views

partition being mounted as noexec, not fstab, what else can it be?

I have one partition being mounted as noexec. It shows on the mount output, but there is nothing on fstab to do that. Where is the noexec coming from? my fstab: ...
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107 views

Proper rsync flags for backuping from ext4 to ZFS

I have a home server running Ubuntu 14.04.3 LTS with an ext4 file system, to which I regularly backup data from various devices. Now I have set-up an external USB HDD with ZFS file system and would ...
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99 views

CentOS 7: Partition resizing issue where now there is a lost+found folder full of numbered folders and the data is gone

Set up Running a home server with a 2TB HDD. Running VMWare ESXi 5.5 that has 2 guest OS; CentOS 7 and Windows Server 2012 R2. There are 3 virtual disks (VMDK) thickly provisioned: 20GB CentOS 7 ...
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89 views

Copying .exe files from ext4 to ntfs

maybe a silly question but.. why cant i copy an .exe file format from linux (ubuntu 14.04) to windows 8.1 without corrupts when i try to execute it? I can copy some others file formats like images ...
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28 views

Partition recovery

During a fresh installation, I accidentally formatted a disk containing datas. I tried using testdisk to recover the erased partition, but , it only detects the new one. With the deeper search mode, ...
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1answer
43 views

Infinitely deep folder without symlinks in ext4

It seems like I can find an infinite number of /pl/locale subfolders in this ext4 partition, yet none of them are symlinks. Where is the loop? $ ls -ld ...
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90 views

GParted shows false partition information after resize2fs of ext4 partition

I expanded my mdadm RAID 5 from 5 to 6 4TB disks and grew the raid. That all worked well. After I tried to expand the ext4 filesystem in GParted, which failed because of the 16TB limit. Afther the ...
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195 views

How do I use an Ext4 partition from Windows with correct file permissions for Linux?

I use Windows 7 and ext2fsd to access a data partition which uses ext4 as mentioned here, here and here. I can read and write from Windows. When I boot into Linux, it is able to read the files but ...
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60 views

Filesystem fails when trying to boot Arch from USB pendrive

Lately I was trying to make bootable pendrive with Linux Arch. Following "Begginers guide" from wiki.archlinux.org, I made it, using syslinux as my bootloader, however, it doesn't work properly. ...
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47 views

Moving a partition without gparted [duplicate]

I need to move (shift) an ext4 partition on my disk in a headless Linux machine, like this: Before: [######### Partition #########][- Free space -] After: [- Free space -][######### Partition ...
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69 views

Recover specific files from a damaged hard drive

I'm trying to recover some 3-5GB of NEF files which were not yet backed up at the time of the crash. This is a 418GB ext4 partition and when mounted with -o ro,noload I can list the directory where ...
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142 views

Resize encrypted lvm volume and reallocate the space to windows partition

Here's a diagram of my solid state drive's partition setup. sda sda1 - boot (ext4) sda2 - LUKS Encrypted Partition LVM Volume Group Swap Logical Volume (ext4) Root Logical Volume (ext4) Home ...
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239 views

Unable to mount corrupted (?) ext4 filesystem on usb hard drive (Ubuntu 14.04)

I have a 1 TB external USB hard drive from which I deleted the original NTFS partition and created an ext4 partition through gparted. I then started copying a 500 GB file onto the new partition, but ...
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138 views

Ubuntu 14.04 Desktop as local server - ext4-fs error

I have set an Ubuntu 14.04 as a local server. Also I have two identical hdds on RAID1, on md0. I have tested raid configuration and works ok. I installed virtualbox from the official website and keep ...
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Is copying files between two different file systems slower than between the same file systems?

I was wondering if copying files between different file systems (for example from ext4 to ntfs) is slower than copying to the same file system (from ext4 to ext 4). I also would like to know how does ...
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1answer
78 views

Understanding metadata usage behavior in a newly converted btrfs filesystem

I have a 5 TB hard drive with 3.3 TiB (as reported by du) of media files in 119k files and directories; the average file size was about 28 MiB. I converted the ext4 partition into btrfs with ...
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1answer
47 views

Is Filesystem relevant in SFTP?

I have a home server with an NTFS disk attached, and I use FileZilla to access the data on that disk. I have both Linux and Windows clients, and I was wondering if the data would still be accessible ...
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113 views

recovering scrambled ext4 partitions

My year old 3TB Seagate drive stopped working. The drive had 3 ext4 1TB partitions which hold almost 2 years of accumulated data. I was using it in a ubuntu server when the mounted partitions stopped ...
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98 views

How to defragment or minimize a “directory file” on ext4?

I have quite an old home directory on HDD. There were lots of files created and removed and now the size of /home/username is 995328 bytes. Please note, I mean the size of the "directory file" (every ...
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117 views

Ext4 USB stick gets corrupted again and again

I installed Debian Wheezy (No GUI/Desktop) on a 4GB USB stick (because the harddrive of the machine was defective, currently the slot is empty), but shortly after, I got an “Input/Output error” when ...
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11 views

Not able to drag an application into new sda1 HD?

My primary HD (sdb) is a SDD (Solid State Drive). I installed and formatted a new 300 GB drive (sda) to ext4. I am not able to drag an application.run file into the new sda1. Why? Because it need a ...
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145 views

SSD seems to be read-only, nothing can be written to it (linux ext4 filesystem)

After two week of normal use my new SSD began to work strange. Now it seems that no file is written to it. An example: root@hooker3:~# mount |grep ssdhome /dev/sda3 on /ssdhome type ext4 ...
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1answer
37 views

Partition for a non partitioned ext4

I have a large almost full disk that was written with a ext4 FS but without being first partitioned. I need to use it with a Windows 7 machine (via ext2fs), but I also have a Linux machine available. ...
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134 views

Which filesystem should be used for a dual-boot machine's storage? [duplicate]

I'm planning on setting a dual-boot machine with Windows (8.1) and Debian sitting on different partitions of an SSD. The problem here is my 1.5TB storage drive. I'm planning to use Windows and Debian ...
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108 views

fedora 21 lets a user overwrite a file he does not have access to

I reproduced this problem on two fedora 21 machines. I would like that sqlite3 does not write the ~/.sqlite_history file. I couldn't find an option but said, no matter, I'll make it that it can't ...
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1answer
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mounted filesystem without journal. Opts: (null) while mounting ext4 fs

I am using Beaglebone black with NFS, I have formatted internal eMMC with ext4 filesystem, when i mount the file system using following command message popups telling filesystem is mounted without ...
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99 views

Does btrfs-convert preserve the disk's UUID?

I'm thinking of converting my / from ext4 to btrfs. Will the UUID change?
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36 views

How can I get Samba to close files immediately?

I've been experiencing a baffling disappearing file issue on my NAS since I first bought it, and only today after extensive testing do I think I have a handle on what exactly is occurring. I fear ...
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51 views

How to check that all files in a file system are can be read without errors?

I'm using an external hard drive with an ext4 file system to make backups. The backup software I use (faubackup) copies the file hierarchy 1:1 into a timestamp-named folder on the hard drive, and ...