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

learn more… | top users | synonyms

0
votes
0answers
13 views

VFS: Can't find ext4 filesystem

I'm using a Ubuntu 14.04 server. There are errors in the /var/log/syslog file, like this: Jun 26 11:25:36 compute4 kernel: [64813.543046] FAT-fs (nbd4): bogus number of reserved sectors Jun 26 ...
2
votes
1answer
14 views

Mount type always set to none

Wish you a good day! I want to mount a folder with type ntfs or ext2 or ext4 in order to set permissions for files in that. This is how I did: tudinh@Acoustic:~$ sudo mount --bind -v -t ext2 -o ...
1
vote
1answer
97 views

Cannot install Ubuntu 14.04 on new SSD - the ext4 file system creation in partition #1 (0,0,0)(sdd) failed

I'm a linux noob trying to install ubuntu 14.04 to a new 120 gb Kingston SSD. I'm aware there are other questions relating to this but I cannot find anything useful. Apologies if I have overlooked an ...
0
votes
2answers
13 views

Resizing ext4 partition with ext4 partition on runtime

I have burnt an image on a 32gb SD card and about 28gb was unallocated. I have used the disk utility on the unallocated space and made him ext4 28gb. now, I wish to extended the primary ext4 ...
0
votes
3answers
34 views

Will resizing ext4 partitions with Windows destroy the installed Ubuntu?

As the title says, can I use Windows (7) to resize the ext4 partition Ubuntu is installed on? I dual-boot both Win7 and Ubuntu and want to enlarge the Ubuntu root partition. Is it safe to do this from ...
1
vote
1answer
28 views

How to get my raspberry pi to recognize my Ext4 formatted HDD

I'm trying to get my raspberry pi to function as a media center. Pretty much everything is working fine, but I can't seem to get it to recognize my ext4 formatted 1TB HDD. Whenever I go to ...
1
vote
1answer
11 views

How do I mount an SD Card as /home/wb9688 by startup?

I want to mount my SD Card as /home/wb9688 by startup using /etc/fstab. My SD Card is formatted as ext4 and the UUID is 93afcc06-65be-4154-9b20-6593f14f6c93. A normal user must have read and write ...
1
vote
0answers
11 views

How can I repair my LUKS / ext4 file system?

my computer was running the whole night and my only open windows where IntelliJ IDEA and Google Chrome. Today my file system seems completely corrupted. Linux Mint can't read any files and folders ...
0
votes
1answer
16 views

Ext4 to Ext4 file copy slows down whole system

When I try to copy big file/files >= 10 GB, my whole system slows down. Applications take long time to open. Even I can't type smoothly, video player starts frame drop. But everything goes normal ...
0
votes
1answer
2k views

EXT4-fs errors and sd errors. Rejecting I/O to offline device

System Configuration: Ubuntu 12.04 server 64bit HP Proliant dl140 g3 32gb of RAM Intel X5365 quad core 3GHz LSI SAS1068 2x WD black 2TB SATA HDDs in RAID 1 Errors: [ 2044.430919] EXT4-fs (sda1): ...
80
votes
7answers
263k views

How can I resize an ext root partition at runtime?

How can I increase the size of the root partition of a system at runtime? I have a partition that is not allocated after the root partition (which is also ext4), how can I add that unallocated space ...
1
vote
3answers
49 views

do I still have to defrag my NTFS drive

so I know that my primary ext SSD doesn't need to be defragmented, but I have a storage HDD that is formatted as NTFS. Does this drive still need to be defragged? If so, what programs would you ...
2
votes
1answer
645 views

Disabling Journaling in Ubuntu 14.04?

I installed Xubuntu (sometimes running Cinnamon, but I digress) and would like to disable journaling in order to make file-shredding the ext4 system partition more effective (non-system/app data is on ...
0
votes
0answers
26 views

Ubuntu 14.04, ext4 remounts read-only 10-30 minutes after hibernate

After waking the laptop from hibernate, it successfully resumes. There are no errors in /var/log/pm-suspend.log and the filesystem is mounted read-write. After 10-30 minutes of regular use including ...
2
votes
2answers
45 views

How to recover data from a thrice formatted HDD?

So, long story short... My brother wanted to play the pc technician and went on and formatted our main computer. I had Ubuntu 14.04 LTS on a ext4 partition running there, hoping he wouldnt be so eager ...
0
votes
1answer
45 views

Resize ext4 Partition to >2TB without data loss

Is it possible to resize an ext4 partition to >2TB without data loss? I added 1TB disk from a RAID 5 Hardware RAID (from 2TB usable to 3TB usable) fdisk command output: Disk /dev/sdb: 3000.5 GB, ...
2
votes
1answer
40 views

Modify size .ext4 file

I'm currently trying to modify the partition table for an embedded platform. One of the files flashed towards the platform is an .ext4 file. I can mount the file, but I can't increase it's size. ...
2
votes
1answer
45 views

How can I mount an external drive with the permission to execute programs from it?

I wanna mount my USB HDD formated as EXT4 to let say /home/user/exe where there will be executable files. when I mounted my HDD there it mounts fine but I can't run any executable file from there I ...
0
votes
0answers
24 views

/proc/fs/jbd2/partition/history - how to enable?

I have the /proc/fs/jbd2/partition/info file that produces the summary of what happened in the partition's journal so far, but I am not able to see the history file. It doesn't exist. What should I do ...
7
votes
3answers
2k views

ext4 to btrfs conversion: how long can it take? space requirements?

I started btrfs-convert for my ext4 partitioned hdd. I did a fsck first which was fine. So since it is running over 4 hours now (1.) I wonder if it will ever finish ? I read multiple articles ...
1
vote
1answer
44 views

Disk allocation

I installed ubuntu 15.04 and used entire space(640 GiB) for ext4 partition but now it is showing that used space = 30.91 GiB, free space = 24.96 GiB and 536.40 GiB unallocated space. I tried to extend ...
0
votes
0answers
24 views

fsck took only two seconds to report “clean”. What did I do wrong?

I booted a LiveCD (Ubuntu 14.04.2) and opened a terminal window. I used sudo lshw | more to determine that my usual boot volume was logically named /dev/sda1 . It's the primary partition on a 1 ...
7
votes
1answer
20k views

How do I enable extended attributes on ext4?

I want to experiment with Ceph, and it needs extended attributes enabled. How do I mount my filesystem with this support?
0
votes
1answer
100 views

Cannot boot to SteamOS after upgrade to 15.04

A quick overview of my system: I have Ubuntu, Windows 8.1, and a Debian-based OS (specifically SteamOS) all installed. All of them booted just fine before yesterday. Yesterday, I upgraded to Vivid ...
8
votes
3answers
11k views

How can I convert my root partition from BTRFS to EXT4?

Is it possible to convert btrfs to ext4 without losing data? I'm experiencing a very low speed on read/write operations on btrfs.
1
vote
2answers
83 views

I can't create both Swap and Ext4 partition

I installed Ubuntu using the dual boot method. My laptop is HP pavilion DV6. It has MBR on my HDD, so I'm limited to create 4 primary partitions. In Windows 8 I have used 4 primary partitions. In the ...
6
votes
3answers
17k views

undelete files on ext4

My mother has placed some important files on her /tmp per accident. Now, of course, they are gone. This happened yesterday (2 boots of the machine since) I want to try to undelete the files. They ...
9
votes
3answers
4k views

How can I optimise ext4 for reliability?

As ext4 was introduced as more reliable than ext3 with block journals, is there any chance to suppose it 100% reliable? What if enabling block journaling on it, which is disabled by default? As ...
0
votes
1answer
61 views

Manual Partitioning During Installation: Understanding File System Types

I am wondering if anyone can help me understand the difference(s) between the different file system types: ie. swap, ext4, reiserfs, etc... I am working with the manual partitioning during ...
0
votes
0answers
59 views

Ubuntu Server 14.04.2 LTS restarts continuously

is my first time asking here, so, congrats for the forum, is very instructive! I have an Ubuntu Server 14.04.2 LTS (64bits), and when Im working with that, I don't know exactly why, it restart again ...
3
votes
5answers
7k views

Move ext4 partition

I have an ext4 partition at the end of an hard drive, and want to resize it to the full disk size (the rest of the disk is empty). It's not the root partition, just a data partition, so it's no ...
1
vote
1answer
55 views

Windows 8 install turned my ext4 partition into unallocated space. How do I recover it?

The unallocated space in sda2 is supposed to be an ext4 partition with my ubuntu install in it. How do I recover this from a live CD so I can back up my data?
0
votes
0answers
39 views

Error mounting SCSI drive on Ubuntu Server 14.04

I'm trying to mount a SCSI Drive on my Ubuntu 14.04 server. To mount I entered this in the Terminal: geza@Server1:~$ sudo mount -t ext4 /dev/sdb /media/sdb mount: wrong fs type, bad option, bad ...
0
votes
0answers
88 views

Problem with EXT4 in Ubuntu 14.04

I tried to create a file system EXT4 on flash drive, and I failed. The resulting file system was not mountable. Mount gave an error. In addition, I formatted the drive in other distribution in EXT4 ...
4
votes
2answers
137 views

How can I create an EXT4 partition with an extra large number of inodes?

About inodes In Ubuntu, each file and directory is a so-called inode. You can use df -i to check the number of inodes in use and available for all mounted filesystems. Question If you create a new ...
0
votes
2answers
31 views

mounting drive remotely on server

I'm doing a school project and we've been given access to some servers, so we can build a simple Cassandra database. I need to mount a drive on each instance -- there are four instances. The ...
0
votes
2answers
28k views

Recover from a corrupted filesystem when fsck do not help

Something went wrong with my filesystem, Ubuntu set it to read-only and now under Ubuntu Live Disc, fsck can't fix it. I'm running 13.04 and it won't boot - at startup, it just shows the grub rescue ...
1
vote
1answer
2k views

Formatting 128GB SD card to ext4 with gparted

I am trying to format a SanDisk 128GB SDXC card plugged into the internal SD card reader on a Toshiba Chromebook 2 running Crouton. When I format to ext4 using gparted the operation never completes, ...
1
vote
1answer
112 views

Cannot write on ext4 partition Ubuntu 14.04

I formatted the disk in my computer as ext4. Now I'm trying to make it readable and writable for any user on this computer. My entries in /etc/fstab look like this # Data partitions ...
0
votes
2answers
58 views

Running ubuntu from ext4 formatted USB drive?

The "Make Startup Disk" ubuntu utility sees it as writable only if it's fat formatted. If I format it to Ext4, it sees it as 0 free space and doesn't allow to click "Make startup disk" button. ...
1
vote
1answer
124 views

Main data drive giving I/O errors

My main data drive is throwing up all sorts of weird I/O Errors: (tail of dmesg output) [ 7081.267852] sd 4:0:0:0: [sdb] Unhandled error code [ 7081.267856] sd 4:0:0:0: [sdb] Result: ...
0
votes
2answers
53 views

what free percentage is good for a partition to maintain? [closed]

The use% of most my partitions (including /,/home, and two ntfs partitions shared between Windows and Ubuntu) are more than 90%. Now I plan to replace my hard drive with a bigger one, and install a ...
0
votes
0answers
51 views

ext4 partition lost after windows installation.How to recover it?

My disk had two partitions one was an extended partition containing my root and swap space and the other was an ext4 partition. Recently I installed windows 8.1 on it by shrinking the ext4 partition ...
0
votes
0answers
25 views

Why are ext4 filesystems owned by root?

I formatted a flash drive to ext4 and created a new partition on my hard drive with fs type ext4. Both were owned by root and I had trouble writing files. Why does that happen? Also, if that has no ...
0
votes
1answer
107 views

how to exchange unusable space to ext4 in ubuntu 14.04 installer?

I am trying to install ubuntu 14.04 along side with windows 8 : when I try to create an ext4 partition after creating one ext4 and swap , remaining space changed to unusable how should I prevent ...
9
votes
7answers
23k views

Which tool to backup an ext4 partition?

I'm searching for a tool to backup a whole ext4 partition to an image. I tried the latest version of mondo, which is not working. What are good alternatives?
0
votes
1answer
447 views

Full internal harddrive converted to ext4 file system, how to install Windows back again? [duplicate]

I had Windows 7 installed on my laptop, with hard drive partitioned. I installed Ubuntu formatting the drive as it didn't detect I had Windows 7 too already. It installed correctly, but now when I'm ...
1
vote
0answers
328 views

Explanation of entries in dmesg log in Ubuntu Server 14.04

A few days ago I did a clean install of Ubuntu Server 14.04. Everything is working fine, but when my system boots I get these entries in dmesg log: [ 3.106082] EXT4-fs (dm-0): mounted filesystem ...
0
votes
1answer
202 views

Is it advisable to install Ubuntu on btrfs or ext4? [closed]

I used to install ubuntu on ext4 but I heard about btrfs. Is it advisable to use it for Ubuntu installation? What are the pros and cons?
-1
votes
1answer
51 views

how to extend root (/) partition by freeing ext4 partition? [duplicate]

My root (/) partition is full and i want to extend my root file system by freeing extra memory present in other partition which is ext4. How to free some space with ext4 allocation and how to extend ...