The ext4 or fourth extended filesystem is a journaling file system for Linux, developed as the successor to ext3.
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I have an ext3 iso disk image. Can I use it and write it to a ext4 partition?
Is it possible to do so ?
I am migrating to EXT4 because of the SSD drive that has TRIM funtion. I have to have ext4 partion.
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populated hard disk partitioning/moving (a lot of operations) [closed]
I have a HHD which is actually a mess. I would like to organize it and exclude some partitions I don't want to use anymore.
Positioning the HD partitions beautifully require moving entire partition to ...
2
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1answer
101 views
ext4 integration in windows 8 - access through explorer
I know there are similar questions; however none I could find that addressed accessing ext4 through explorer, most others simply use a third party application.
However, my question is; is there a way ...
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2answers
155 views
mkfs.ext4 errors
I've just installed Kali Linux and am working with an img file I created from dd (/dev/zero). When I go to do mkfs.ext4 on it, I get
mkfs.ext4: Device size reported to be zero. Invalid partition ...
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2answers
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Is it safe to disable ext4 journaling on root and home partitions?
On my ArchLinux laptop I have / and an ecryptfs encrypted /home partition formatted with ext4. Both contains importand (backuped) data.
Is it safe to disable ext4 journaling when partitions contains ...
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1answer
61 views
Weird behaviour on ext4 dd performance test
I'm testing the performance of ext3/ext4 on a raid1 system (but the same goes for a non raid system). The results from bonnie++ give a distorted image because they circumvent the delayed allocation on ...
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2answers
84 views
rm -rf extremely slow & slows down server
I did a rm -rf foldername in an attempt to delete a folder containing 10,000s of 25KB files.
Question Why is it taking so long (Almost 30 minutes)?
Why did the server became extremely slow, even ...
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1answer
45 views
Thunar is not showing directories on ext4 drive [closed]
Many (not all) of my directories are suddenly not accessible in Thunar. However, I can access the files via the command line. In the file browser, I can only see generic icons.
How can I fix this?
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42 views
How do I add additional locations to the Windows 7 Recycle Bin Properties?
I have set up a home network with a small file server running Samba. I read on a forum post that by re-mapping a user folder on Windows 7 to a network drive, a reference to that drive will be added ...
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0answers
77 views
df command on EXT4 and XFS filesystem
I have a observation on EXT4 filesystem. I created filesystem of size 1TB, 4TB, and 7TB and then checked the output of df command.
df command showed the number of 1KB blocks used. The result was:
...
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0answers
54 views
Ubuntu livecd stopped while resizing partition?
I booted up an Ubuntu 12.04 livecd, went to gparted and started to resize my main partition (ext4) from ~500gb to ~150gb (110gb used)
After about 5-10 minutes, the whole system hangs and the cd drive ...
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0answers
92 views
FreeNAS 8 and ext fs
i'm trying out freenas8 for my personal NAS, i have lots of data that was in an ubuntu server, but somehow i never got the file sharing right. on freenas things just worked. i installed on usb, tried ...
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2answers
173 views
ext4 on mdadm reverting data
I have a problem with my home server setup. The problem is that sometimes, but really rarely, it reverts (for a lack of a better term) all my data back to an earlier state (somewhere between months ...
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1answer
91 views
Do ext4 filesystems need to be defragmented?
Do ext4 filesystems need to be defragmented?
If so, How do I defragment them?
If not, Could you post a simple explanation of why they do not need to be defragmented?
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1answer
117 views
GParted can't grow /dev/sdb, apparently in use [closed]
I'm trying to grow a partition using GParted from 1.5 TB to 1.82, however keep receiving this error:
I unmounted the drive beforehand with sudo umount /dev/sdb which seemed to work, and it's ...
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1answer
125 views
HDD is preventing ubuntu from installing
I have recently attempted to install ubuntu on my laptop, replacing windows 7.
The HDD was working fine with windows 7.
On my first attempt to install ubuntu it kept giving me an error that was ...
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0answers
97 views
Setting up Fedora alongside Windows 8 with special considerations
I've recently found myself much more comfortable using the console and other tools on my Mac than their counterparts with Windows. Specifically, these tools include LaTeX/xindy, emacs and its load ...
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200 views
extundelete does not finish its work
I need to restore a file on sda7 so I remounted ro und startet extundelete
manuel@P5KC:~/recovery/RECOVERED_FILES$ sudo extundelete --restore-all /dev/sda7
WARNING: Extended attributes are not ...
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1answer
804 views
Disable journaling on ext4 filesystem partition
I'm running Linux Mint on an SSD. I've read how one optimization is to disable journaling. However, when I run the command:
sudo mke2fs -t ext4 -O ^has_journal /dev/sda1
I get an error saying that ...
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1answer
173 views
Linux fine tuning for Vertex 3 SSD
I've been reading about optimizations for SSD disks on Linux, there is lots of info out there although very confusing and most feel outdated so I'd be grateful if someone sheds some light on the ...
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1answer
291 views
HDD bad sectors with OS [closed]
I wonder is that possible for OS to make bad sectors on Hard Drive?
Preface:
I have bought new HDD on 1Tb WB Caviar Black. I have installed new OS on ext4 partition Ubuntu 12.04.1 LTS. After few ...
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8k views
How can I mount an EXT4 USB drive on Windows 8?
I have a USB drive formatted as EXT4. How can I mount it in Windows 8?
Ideas on other workarounds are appreciated as well!
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2answers
147 views
Why doesn't Ext4 cache directory size?
Once again I'm cleaning up my desktop because I'm running out of HDD space and everytime I call 'du -sh ~', it takes a really long time to calculate the current size of the directory. From my ...
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1answer
362 views
How to resize extended partition?
I have primary partition with Windows XP on it.
Also I have extended partition divided into 3 logical partitions:
- Drive D: for Windows
- Ext4 Linux System
- Swap
Now, Linux is my main system, and ...
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0answers
80 views
from XEN to VMWare
I have migrated many xm virtual machine to vmware
Using http://www.zoobey.com/index.php/resources/all-articles-list/268-xen-to-vmware
, migrations were very smooth. But now I am struck in a xm ...
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1answer
605 views
What is EXT4-fs error (device md0): ext4_mb_generate_buddy:739: group 10770, 0 clusters in bitmap, 32768?
On my Ubuntu Server 12.04 I got this errors (via dmesg):
[ 1104.544121] EXT4-fs error (device md0): ext4_mb_generate_buddy:739: group 10771, 0 clusters in bitmap, 32768 in gd
[ 1104.549227] EXT4-fs ...
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3answers
676 views
Fastest way to convert an ext4 formatted disk to LVM with ext4 on it?
I'm currently doing cp -aR to copy data from my (99% full) 1TB ext4 formatted disk to a new LVM-with-ext4-on-it disk. It's taking forever.
Is there any way to attempt to "convert" the disk in place? ...
2
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1answer
407 views
Parted has no 'resize' command available
I'm trying to resize a partition using parted, but it has no the 'resize' command available
gchain@archbogchain@archbook:~$ sudo parted /dev/sdb
GNU Parted 3.1
Using /dev/sdb
Welcome to GNU Parted! ...
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0answers
126 views
Reverse lookup of inode/file from offset in raw device on linux and ext3/4?
In linux, given an offset into a raw disk device, is it possible to map back to an partition + inode?
For example, suppose I know that string "xyz" is contained at byte offset 1000000 on /dev/sda:
...
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0answers
84 views
Mounting a remote disk image which I made local via sshfs? Possible?
The core question first:
Is sshfs fit to provide low-level reads/writes/seeks as required when a file contains blockdevice-like contents?
Why? Well...
I am trying to locally mount a filesystem-image, ...
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1answer
310 views
Slow rm performance on an ext4 partition
Removing what seems to me to be a moderate number of files takes a very long time. For example:
$ pv linux-3.0.16.tar.bz2 | tar xj
73.2MB 0:00:16 [4.55MB/s]
$ pv linux-3.0.16.tar.bz2 | tar xj
73.2MB ...
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1answer
118 views
Is file creation durable on ext4?
On some filesystems, when creating a file, it is necessary to call fsync() not only on the file itself, but also on the parent directory, to make the file creation durable. Otherwise, the directory ...
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2answers
944 views
How long can file system writes be cached with ext4?
A while ago, there has been some discussion about ext4 potentially leaving empty files after an unclean unmount, summed up pretty well in this article. Basically, because of delayed allocation, writes ...
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1answer
175 views
zram trimming by writing zero pages
I'm using ZRAM as a backing block device for /tmp filesystem in the following manner:
echo 8000000000 > /sys/block/zram0/disksize
mkfs.ext4 -O ...
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1answer
142 views
EXT4-fs error (device loop0) ext4_mb_generate_buddy
I've been randomly getting theses in my /var/log/messages
[5747511.945300] EXT4-fs error (device loop0): ext4_mb_generate_buddy: EXT4-fs: group 1: 29505 blocks in bitmap, 29455 in gd
Not had any ...
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1answer
278 views
western digital caviar black. EXT4-fs error
Recently I update my HDD on desktop machine, and bought WD Caviar Black.
But after I format & copy information to it (using dd), and fix partitions size: I have next errors in kern.log:
Aug 27 ...
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1answer
45 views
Quick way to empty a partition
I have a partition, formatted ext4, that I want to empty completely. I will be repeating this write-then-empty process repeatedly, so I want the emptying step to be as quick as possible.
One option ...
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1answer
10k views
How to mount read-write an ext4 partition on Windows? [Solution: back to NTFS]
I want to use ext4 on my external HDD, but it must be cross-platform. (At least Linux, Win7 & WinXP).
Unfortunately, I haven't found any proper driver allowing Windows to WRITE to ext4. I've ...
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1answer
166 views
On Linux allow a file to be read/write but not deleted
Is there a way in Linux on a ext4 file system that I can make a file readable and writeable but not deletable?
The directory that the file resides in still needs to be writeable by the owner of the ...
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1answer
145 views
Is there a tool to browse files on a VMware virtual disk w/o starting a virtual machine?
I am looking for a way to browse through a VMware virtual disk in order to extract/copy files that are located on an Ubuntu EXT4 partition that is allocated on that disk, without the need to actually ...
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1answer
875 views
Having trouble with EXT4 on LVM on software RAID 5 (corruption)
Here's the quick and dirty of my problem. I'm using Lubuntu 12.04, Xubuntu 12.04 and plain Ubuntu 12.04. Tried with generic kernels 3.2.0-25 and 3.2.0-26. This issue persists on all 3 variants which ...
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1answer
71 views
Dealing with different usernames when mounting removable media in Linux
I have a laptop in which my username is, say, "foo". I have an external drive, formatted with Ext4, for which all files are owned by "foo" (at a filesystem level). Now, I have a desktop in which my ...
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3answers
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Are there any reasons why I wouldn't want to format a USB flash drive in HFS+ for Linux/Mac usage?
There have been other questions regarding the use of HFS+ formatted drives on Linux (e.g. this); however, I am specifically interested in knowing if this is a good idea for a particular purpose.
I ...
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1answer
345 views
How could I easily pack a directory to an ext4 loop partition image?
I would like to pack the content of a directory into an ext4 partition image easily, without mounting a loop device.
Background: I am building a version of Android which will mount system partitions ...
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1answer
284 views
Hard drive partition size wrong. How do I resize without loss of data?
$ fsck
fsck from util-linux 2.20.1
e2fsck 1.42 (29-Nov-2011)
The filesystem size (according to the superblock) is 610471680 blocks
The physical size of the device is 536870911 blocks
Either the ...
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0answers
322 views
Cannot mount harddrive from HP ProBook via SATA-USB adapter
I'm trying to mount harddrive from HP ProBook 4525s to another computer for data backup from damaged laptop. There are two ext4 and one swap partition on hdd. I'm using SATA-USB adapter, but after I ...
5
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1answer
356 views
A weird issue relate to ext4/lvm/raid-5 after partition recovery
I have 3 hard disks, in the following paragraphs named /dev/sda, /dev/sdb and /dev/sdc, newest came first. Note: /dev/sdc has one primary partition /dev/sdc1, one extended partition /dev/sd2, and 3 ...
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3answers
22k views
How do I format a drive as EXT4 on Windows 7?
I'm trying to create an ext4 file system on an external drive. The partition manager I usually use, EASEUS Partition Master, doesn't support ext4. What are some free alternatives?
Edit: It turns out ...
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1answer
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Why are the sizes of 2 directories different if the data within the directories is identical? They are identical ext4 partitions and disks
root@phoenix:~# ls -ld /backups/external?/var/subsonic/thumbs/110
drwxr-xr-x 2 root root 73728 Mar 4 15:35 /backups/external3/var/subsonic/thumbs/110
drwxr-xr-x 2 root root 69632 Mar 4 15:35 ...
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1answer
224 views
Ext4 forensic analysis
I'm doing a thesis about forensic analysis and I'd like to format a disk with an ext4 file system without zeroing it, to analyze the possibility to recover deleted files. This is a problem, because ...
