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

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How to resize an ext4 encrypted home partition?

Which is the best way in order to resize an encrypted (ecryptfs) ext4 home partition ? Pros nad Cons of each method are greatly appreciated. $ fdisk -l Disk /dev/sda: 256.1 GB, 256060514304 bytes ...
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2answers
926 views

Optimizing EXT4 performance

I'm using my machine to build stuff a lot and there's a specific directory that gets used very often. I've got 8GB of RAM, which is helpful for the build, but is far from enough to cache the whole ...
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2answers
790 views

Recover EXT4 Partition from Interrupted Resize

world! [that's funny, it automatically takes out leading "hello"s] I'm installing Ubuntu on a friend's laptop, and I encountered a problem while resizing the Ubuntu partition. I was expanding it to ...
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2answers
18k views

How to mount ext4 partition?

How do I mount an ext4 partition as my user account so I wouldn't require root access to r/w on it? I used -o uid=flint,gid=flint on the mount command but I keep getting mount: wrong fs type, bad ...
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2answers
1k views

Convert existing internal hard disk into network attached storage

How can I setup an internal 3.5" SATA hard disk, with existing data on an ext4 partition, so that I am able to access the data on WLAN? What product should I be looking for to turn the bare drive ...
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4answers
25k views

How to set permissions so that I can read and write to another partition?

I m using Ubuntu 12.04 and i have to partitions part1 and part2, both are ext4. I want to transfer media files to and from them freely through programs.
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1answer
630 views

Restore Encrypted /home partition

I need to recover my lost data. Tonight I reinstalled ubuntu without formatting /home, thinking that ubuntu was enought smart to install itself without wiping the previous data in directory like ...
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2answers
1k views

Android phone: how do I play MP3s on my hard drive over WiFi?

Wasn't sure whether to ask on here on on android.stackexchange.com ... but I want to play music which is on my desktop machine through my phone. The music is coming from ext4 partition which I am ...
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1answer
41 views

Ubuntu crashed unexpectedly when browsing

How can I boot to Live CD and then access Ext4 partitions.
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5answers
2k views

Moving 11.10 complete system to a new bigger Harddisk

I would like to move my current installation of Ubuntu 11.10 to a bigger harddisk, since the old one is failing. I would like to avoid solutions like dd block copying (since there would be unused ...
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2answers
377 views

Journaling Backup

Is there any software that takes journaled backups for Ubuntu? I'm currently using the built-in deja-dup, which is great. However, it backs up at most once every 24 hours (daily). Is there any way ...
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1answer
929 views

How to make ext3 converted to ext4 support e4defrag?

I have two ext3 filesystems that are very old and have been 99% full for a long time, leading to fragmentation. Also, they've been used for running VMs with dynamic disk images and other ...
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1answer
767 views

Copy/Backup ext4 files to external ntfs hdd: Permissions etc

Normally I backup my files (from ext4 drive) to an external ext4 hdd. Now I want to copy/backup some files to an external ntfs hdd, so I have the possibility to access them from Windows, too. Is ...
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0answers
295 views

I can't copy any file to ext4 partition! [closed]

I converted on of my NTFS partition to EXT4 format with GParted tool, But now I can not copy create any files to that partition, also on start up I have error reading of one partition so I have to ...
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1answer
2k views

How long does an ext4 format take?

The USB cable on my Iomega Prestige 1TB hard drive conked out a while back, and I've finally managed to get a new one. I removed the old NTFS file system because I use Windows maybe once a month, and ...
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5answers
5k 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 ...
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1answer
1k views

Can't access an ext4 partition in a external HD

I have a 1TB external HD that I partitioned into a FAT32 partition and an ext4 partition. Apparently the file system of the ext4 is damaged and I cannot access it. The disk utility on the drive looks ...
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0answers
277 views

Stuck on 12.04 install [closed]

brand new HP box -- installing from cd that is a good burn, have tried several times. I am stuck at "creating ext4file system for / in partition #3" Been here for 25 minutes? Normal on a new ...
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6answers
12k views

XFS or ext4 on external hard drive

I have an external hard drive on which i want to make a backup of my files. Which file system between XFS and ext4 will be the fastest to write data on the hard drive?
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1answer
1k views

Formating NTFS partition into EXT4 and setting up as home

I have 750gb drive and i have 3 partitions on it (i am not counting swap.) One is for Ubuntu. Second is for Arch, and third is in NTFS format (i have that partition since i was on windows and nope i ...
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2answers
8k views

New ext4 partition and used space

I have fresh ext4 partition, which means I just formated it with mkfs.ext4 -m 0.1 /dev/mapper/abak-home, and there's already 27G space used. Setting reserved root space (-m) to 0 didn't have any ...
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2answers
344 views

ext4 hogs lot of unkown space compared to ext3

Ext4 FS has claimed 3% of partition space. Where has this gone and can I get it reclaimed? I have tried disabling Journals for the ext4 partition. Even this is not helping. Any other tricks I can try ...
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1answer
652 views

What filesystem should I use for a Seagate Momentus XT Hybrid ST750LX003?

I am considering upgrading my regular HDD hard drive on my laptop by the SSD/HDD Seagate Momentus XT Hybrid ST750LX003 hard drive, and I was wondering if I should take any particular consideration in ...
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0answers
69 views

How to view ubuntu files from windows? [duplicate]

Possible Duplicate: How to read ext4 and btrfs partitions in Windows? How to view ubuntu files from windows. If i cant access ubuntu(it crashed badly). Files are important! Please help !
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1answer
351 views

bind (hardlink) one directory to many places

I need to "bind" one directory to many chrooted places. I know that I can do "mount -o bind", but this requires special processing on startup each time (run the mount). Is there a way to do it on ...
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1answer
15k views

How do I enable extended attributes on ext4?

I want to play around with Ceph and it needs extended attributes enabled. How do I mount my filesystem with this support?
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0answers
233 views

How can I mount a shared partition with nobody.nogroup? [closed]

I've successfully shared a dedicated partition using samba, setting new files & directories ownership to nobody.nogroup. How can I edit fstab to make the local user work with the partition using ...
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1answer
6k views

Disks constantly spinning no matter what I do (jbd2). I'm on the brink of insanity

My disks have been spinning for months. It started with Ubuntu 11.10, and continues with 12.04. I can't figure out how to stop it. I've looked at various folks suggestions online about ext4 commit ...
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1answer
804 views

(No Root File System)-ergo no install 12.04

I have my HDD 1Tb partitioned with fs ext4. Previously I was booting from the 2TB Hard Drive...I disconnected that. Now I want a clean install 12.04 but cannot figure out "Root File System" ("/") ...
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1answer
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ext4 jbd2 journaling active even on empty filesystem

I have been having several issues with my ext4 file-systems that seem to be due to jbd2 journaling. I made a related post here and am rephrasing it with the hope that someone may be able to help. For ...
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2answers
9k views

Share Ext4 Partition Over Network

I have an Ext4 partition (not auto-mounted) that I would like to share (entirely) in my home that contains Mac OSX, Windows and Linux machines (currently the most important is sharing with the Mac). ...
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2answers
1k views

How to overwrite Ubuntu with Windows 7? [closed]

So I have a Windows DVD and it works. But when it gets to the part when it says "Upgrade" or "Custom" I click on custom and at the bottom it says cannot install over it because Windows 7 can only be ...
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3answers
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rsync not working between NTFS/FAT and EXT

I have music that I play in my car, from an FAT32 USB stick. The folder which I use to put songs on is stored on my EXT4 hard drive. I add/remove/retag songs regularly and occassionally want to ...
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2answers
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Arbitrary EXT4-fs remounts scattered throughout dmesg output

I've been trying to diagnose a message I see in my dmesg output. Last night I was watching a video which really taxed my notebook and I noticed that the computer was super hot and the fan wouldn't ...
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2answers
5k views

Utility for resizing partitions

Is there a partition utility in Ubuntu from which I can break my existing 'ext4' partition into more partition w/o loosing this partition's data?
2
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1answer
444 views

How do I change the size of an ext4 partition? [duplicate]

Possible Duplicate: Resize partition with GParted I upgraded the hdd in my FOG server (Ubuntu 11.4) to 500gb but I can't find a simple way to enlarge the partition to take up the empty ...
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0answers
267 views

Vanished partition recovered, disk still half full but no data to be found! [closed]

I recently had a hard drive partition vanish on me while moving the drive from one machine to another. In an attempt to fix the problem I took it out of my Ubuntu box and put it in a Windows machine ...
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2answers
603 views

Is ext4 stable on 11.10?

I have seen that Ubuntu 11.10 is offering Ext4 as default file system. As I have googled some time on ext4 and found that ext3 is quite stable that ext4 as it still has some bugs. Even the Ubuntu ...
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3answers
818 views

How can I tell what kind of partition I have? (ext2,3,4)?

I read this article talking about chopping boot-time in half with e4rat, but in order to do so your partition has to be ext4. How can you check what kind of partition you have? Thanks in advance ...
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0answers
982 views

EXT4-fs: previous I/O error to superblock detected [closed]

i have installed Ubuntu 11.10 on my usb hdd. The problem i am getting is this: ext4 (sdb6): previous i/o error to superblock detected buffer erronr on device sdb6. logical block 0 I have been told ...
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3answers
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How do I mount a Truecrypt volume with special options?

I would like to mount an ext4 truecrypt drive with --fs-options but it doesn't work. Also I created a FAT partition and the following command is working. What is the alternative command if my ...
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1answer
2k views

ext4 Data Recovery from format

When doing a clean install of Ubuntu 11.10 I accidentally selected for my data disk. I have already searched for the partition using testdisk and couldn't find the data partition. Files on the disk ...
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1answer
497 views

NFS server generating “invalid extent” on EXT4 system disk?

I have a server running Xen 4.1 with Oneiric in the dom0 and each of the 4 domUs. The system disks of the domUs are LVM2 volumes built on top of an mdadm RAID1. All the domU system disks are EXT4 and ...
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1answer
924 views

Newly created ubuntu users cannot access my internal hdd partitions

I have a problem with my ubuntu 11.10, the issue is described in the following link: Hard disk icon disappears after mounting After digging and digging I found the issue. It's a problem with ext4 ...
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2answers
431 views

Ubuntu Natty Froze when copying files to my Ext4 External Drive, files can be recovered if corrupted?

I heard that Ext4 Was more stable in these conditions, but how can I be sure that my files didn't get corrupted in the process? I heard that because of Ext4 journaling file that the files aren't very ...
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4answers
2k views

What are benefits of upgrading filesystem from ext2?

I have ext2 filesystem installed on my work machine. I talk with my friend who knows linux a lot better and he said its very old and its very weird that I use so old filesystem. I'm now trying to get ...
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1answer
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In simple terms, how do ext4 journaling file systems work?

How does a journaling file system work and why does it not fragment, like ntfs? Why hasn't Windows switched over to a journaling file system? Co.uld someone please explain this to me? Thanks.
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1answer
1k views

What's the maximum filename length in encrypted ext4 partition?

I'm using a two-partition setup with ubuntu (one partition for the system, one for my home directories). Until now I had an ext3 formatted home partition, which I'm currently trying to migrate to an ...
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3answers
15k views

How can I check if a particular partition ext4 is journaled?

I need to know this because of this: Add the data=writeback mounting option if you formatted the disk without journaling. Otherwise add data=ordered which sould be a good compromise between full ...
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4answers
884 views

Ext4 disk partitions are not visible

I'm a new user of the Linux environment. I have just have installed Ubuntu 11.10 on my system and I'm unable to see the disk partition in which I have installed the OS. Size of the main disk is 100 ...