Ubuntu :: 11.04 Live-CD Cannot Read Ext4 Filesystem?
Aug 18, 2011
I want to install 11.04 next to my working 10.04 system. First I need to make room for the new system so I have booted from a live cd and started GParted. In GParted the partition with the 10.04 system on it, /dev/sda1, has a red circle with an exclamation mark in it and I cannot resize it. When I doubleclick on /dev/sda1 there is the following warning
Quote:
Failed to change to directory '.'(Stale NFS file handle)
Failed to change to directory '.'(Stale NFS file handle)
Unable to read the contents of this file system!
Because of this some operations may be unavailable.
The following list of software packages is required for ext4 file system support: e2fsprogs v1.41+.
The 10.04 system is working and has worked like a dream for a couple of years and the machine has never had any other system on it. Why would the live CD not be able to read ext4 fs?
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Mar 24, 2010
I've had a look at some similar threads but as I'm very new to linux they're already a bit technical for me. Sorry, this calls for someone with patience. I gather from other threads that disconnecting an external drive without unmounting is a no-no, and this seems to be the likely cause. Now the disk is read only and I'm unable to change any settings through the usual control panel on ubuntu. I'm just not familiar with the terminal instructions. I tried to cut and past a few command lines from other threads but I got some warnings that proceding could damage data. Like this one: WARNING! Running e2fsck on a mounted filesystem may cause SEVERE filesystem damage.
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Apr 16, 2010
am having issues with a corrupted ext4 filesystem. My machine has run flawlessly for weeks, then all of a sudden I am getting messages that I can't access various directories, and on reboot fsck dumps to a command line. So far I have been able to fix the problem by manually running fsck. However, this is the second time that I have run into this problem; the previous time I ended up throwing out my hard drive and doing a clean install.I am running a clean install of Karmic Koala, software RAID, 4 Gb RAM, two 500 Gb Western Digital SATA drives, with an Intel E7200 2.53 Ghz dual core processor.Among other applications, I run VMware 7.0 for the occasional task for which I need a Windows program.
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Apr 30, 2010
I run an upgrade and an update on a lucid lynx beta 2. --- got no problems. but about the filesystems i have some questions because it seems for me that at every system boot the system will run an fsck. somtimes it's shown up, somtimes not. but in /var/log/messages and in syslog
I have always following messages ( occured in beta 2 too ).
But first before i continue - here my disk layout:
And here my filesystem types:
This is my problem because those values are seems to be static ! ( note: this partiton is mounted but not in use ) and last not least: the drive is an external usb scsi disk. but on the other side lucid lynx is running fine on my box.
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Jul 24, 2010
During the installation of Ubuntu 10.04 the partitioner was wrongfully configured to see a functioning btrfs partition as ext4 (without reformatting it). Thus the installation process got stuck at 5%.Installer was run again ignoring the btrfs partition.btrfs-tools was added to the new 10.04, but the btrfs partition is now recognized ast4 with lost+found folder on it.Tried to add the btrfs to etc/fstab as btrfs but t won't mount.Can the partition/filesystem type be changed so that this is actually recognized and mounted as btrfs, hoping my data is still on it somehow?
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Aug 20, 2010
Is there an Ext4 filesystem driver for windows?
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Oct 5, 2010
I have recently updated my ubuntu 9.10 install to 10.04. And with that I've tried to install snow leopard on my computer so i can dual boot between them.the install was successful, but grub2 (that worked fine) wouldn't see the OS X install on its own partition. so i tried reinstalling it, like you do after you install windows and it would remove grub as the bootloader.That didn't work and i got a lot of messages that it wouldnt work because my partitioning (or something like that) is GPT. by the end of it i didn't have grub installed at all!so i started playing around with GParted, and while doing that i also put a bios_grub flag on my main ubuntu install partition, thinking that it would force grub to load from that partition. But that just gave me the GRUB Rescue prompt when trying to boot.
So i unchecked the bios_grub flag. and now it doesn't boot to anywhere and when inserting the ubuntu live cd i cant even see the ubuntu ext4 partition and mount it.Gparted says that its a partition that its File System is undetectable and unknown.Is there any solution that will allow me just to mount that partition and copy files from it? (unfortunatelly my backups are a little older than i would like them to be)Heres what boot info script gives me: (the partition that i need is sda1)
Code:
Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================
[code]....
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Jun 30, 2010
I'm resizing an ext4 partition from 100gb to 40gb (I only used 20gb of it or so). Lets say partition is at /dev/sda1. I used
Code:
efsck -f /dev/sda1
to check it
Then I did
Code:
resize2fs -p /dev/sda1 40G
to resize it
When I check fdisk -l, the partition is still 100gb. I have a feeling I resized ONLY the filesystem to 40, but the partition is still 100gb. How do I finish this?
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Apr 19, 2011
On this LAN we have: Windows 7 desktop, 192.168.1.2 Ubuntu 10.04 desktop with ext4 filesystem, 192.168.1.5
On the Windows 7 system, how do you mount a Ubuntu "/home/myHomeDirectory" (ext4 filesystem) as "drive U:" ?
So that U: => 192.168.1.5:/home/myHomeDirectory One possibility is a commercial product called ExpanDrive.
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Dec 26, 2010
I have a 6x1TB RAID5 set up for testing on ubuntu created with mdadm and formatted with an ext4 fs.
This is being shared over CIFS for windows clients. When looking at the fs from both the file box and the clients, it says 4.47TiB total capacity, and 4.24TiB free space. The only folder is Lost+Found which is empty.
I don't have much experience in Linux filesystems as of yet and I don't understand where this 300 gigs has gone!
Is it something to do with journaling?
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Mar 18, 2011
Is there a way that I can use my Linux ext4 file system, as such and then use it on some other computer.I have a dual-boot of Windows 7 and Ubuntu 10.04 and my partition table looks like this:My question might not be clear, so explaining it with an example.Can I copy my Linux partition on a flash drive and then use it on a different PC, with or without any need to install Ubuntu on new PC, by simply booting from the copied ext4 partition.This way, I can easily port my Ubuntu packages and other applications, settings etc. from one PC to other
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Mar 6, 2010
I need to examine a hard drive that came from another system running Ubunut Server (not sure what version). I know the drive has LVM on it, so as far as I understand that means the drive will be treated as EXT4 for mounting. I can't boot from the actual disk, but I have used a IDE to USB connector to make a binary copy of the drive, which I've mounted as a loopback device. However, when I try to mount the loopback device properly, I get this:
root@~je:/# mount -o ro -t ext4 /dev/loop0 /mnt
mount: wrong fs type, bad option, bad superblock on /dev/loop0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
I tried using -t ext4dev too, but that just gives an unknown filesystem error. The file I've got mounting in /dev/loop0 is a .dd file, created by imaging the drive using dcfldd on the server drive while it was mounted (as /dev/sdb). System I'm working on is running Ubuntu 9.10. All I need is to be able to mount the server drive so I can traverse the file directories, there's a few things I need to check on it. If needed I can dispense with the whole loopback setup and just directly connect the server hard drive again using the IDE to USB cable, but I'd rather not do that; it's imperative that the drive doesn't get altered, or at least as little as possible.
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Apr 30, 2010
I'm wondering if anyone knows what will be Squeeze's default filesystem. Will it be the proven ext3 or the newer (sometimes faster, sometimes slower) ext4?
I currently have ext4 and I have nothing to complain about. In fact, my overall experience has been very positive. Ext4 is definitely faster when fsck runs during boot.
What would be the cons of having ext4 as default in Squeeze?
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Jun 3, 2009
will it be possible to convert existing filesystem to new ext4 while upgrading from Fedora 10?
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Aug 5, 2011
On my drive I had 2 partitions for an Ubuntu 9.04 (swap, /) and one partition for Windows. I figured out that I should upgrade my Ubuntu, so I deleted the "/" partition and in its place created 2 new partitions (/, /home) .
After installing the latest Ubuntu 11.04, I realised that although I had backuped everything I needed in a 2nd disk and I could access those folders and their data from my Ubuntu 9.04, both my Windows and the 11.04 can locate neither the folders nor the data now. I have no idea why this happened (perhaps some issue with the mounting?) I have tried the trial version of Stellar Phoenix linux data recovery tool, but it cannot locate the old partitions.
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Jan 31, 2011
I have installed ubuntu to my pc. i made 3 partitions. one for system, one for data and one for swap. two of them were ext4. after some time i have reinstalled ubuntu again. but this time i didn't put to format the second partition, but just mount it using ext4. after that i cannot open my files. checked with gparted shows that 2GB used, but with df 188MB. and in properties writes ext3/ext4 filesystem. i used chown, chgrp but didn't help. please help, these data are ver important. i cannot lose them.
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Jul 11, 2010
I've just bought a new SSD hard drive:Kingston SSDNow V-Series SNV125-S2/128GB 2.5'' 128GB SATA/300The question is which filesystem whould you recommand and why?BTRFS vs NILFS2 or EXT4?If you choose ext4 would you enable jurnalling?I'm very close to choose Btrfs.Any experience with running any of these on your SSD?
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May 6, 2011
I am running a dual boot system with Win7 on /dev/sda and Ubuntu 10.10 on /dev/sdb
I also have a 250 GB disk I use for storing backup data, /dev/sdc
The two logical partitions on /dev/sdc (/dev/sdc2 and /dev/sdc5) each take up 2.86 GB and I would like to free up that space if possible.
Since the filesystem on /dev/sdc doesn't have an OS on it, does it still require that those two logical partitions exist?
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Jun 11, 2009
Is that possible, I mean when I upgrade F10 to F11 with yum upgrade is there a way to 'upgrade' the filesystem to ext4 for example (with the exception of boot partition)? Or I have to reinstall fedora like new?
While changing the filesystem can I do it by parts? what I mean is for example: I have 2 partitions like '/' and '/home' with ext3, so I backup data in '/home', change '/' to ext4 then mv files from '/home' to '/' and change '/home' to ext4 and finally mv those files from '/' to '/home'. Is that possible?
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Jan 9, 2010
I have 4 partitions. One is Ext4 for Karmic, one is NTFS for WinXP, and the other two are Ext4 where I keep all my stuff.When I boot into Karmic and open Nautilus, none of the last three are auto mounted. When I click on one of them, instead of a window popping out asking me for a sudo password, I get a message as shown below.f I try to mount via sudo in terminal it works, but the files for me are then all read-only. Again, if I open Nautilus as root, all works fine.What I want is the following:- for all 3 partitions to automount on startup;- for all 3 partitions to be owned by me and not by root.I tried editing /etc/fstab, but to no avail. Neither did running "chown" help.
/etc/fstab:
# /etc/fstab: static file system information.
#
[code]....
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Jun 1, 2010
I have dual boot: Ubuntu 10.04 and Opensuse 11.2.Howto mount read only ext4 partition from opensuse in /etc/fstab?
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Feb 5, 2010
i am trying to compile kernel 2.6.23 on Fedora 12 After fixing a few bugs (getline error, %dil ,etc) i was able to compile the kernel made initramfs img using dracut updated grub and then booted up the new kernel 2.6.23 but it fails to boot with following error mount: unknown filesystem type 'ext4'
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Jun 24, 2011
I am running CentOS 5.5 with a 14T ext4 volume. We are sharing out a few sub-directories via NFS. Our customer was doing some penetration testing with our web app that writes to one of those NFS shares. We are not sure if they did something to cause the metadata to grow so large or if it is corrupt. Here is the listing:drwxrwxr-x 1 owner owner 470M Jun 24 18:15 temp.badI guess the metadata could actually be that large, however we have been unable to perform any operations on that directory to determine if the directory is just loaded with files or corrupted. We have not run an fsck on the volume because we would need to schedule downtime for out customers to do so. Has anyone come across this before
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May 11, 2010
I'm using Ubuntu 10.04 64bit (Kernel 2.6.32-22-generic) and sometimes my /home partition is remounting in read-only and i have no idea why. Normally I only use programms like Firefox, Rhythmbox, Evolution and Netbeans 6.8. Should I switch to the EXT3 filesystem?
dmesg shows me the following information:
Code:
[ 8758.010352] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 8758.010356] ata7.00: failed command: FLUSH CACHE
[ 8758.010360] ata7.00: cmd e7/00:00:00:00:00/00:00:00:00:00/a0 tag 0
[ 8758.010361] res 40/00:00:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
[ 8758.010363] ata7.00: status: { DRDY }
[ 8758.010366] ata7: hard resetting link .....
Code:
badblocks -v /dev/sdb
Checking blocks 0 to 78150743
Checking for bad blocks (read-only test): done
Pass completed, 0 bad blocks found.
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Feb 9, 2010
I have been having problems with filesystem corruption on my eeepc 1000H for a long time now. I have tried using different filesystems, kernels and distributions (arch, slackware) to no effect. I am starting to grow suspicious that this problem lies somewhere else, as I haven't seen anyone else having similar problems in such a variety of scenarios.
I have tried testing my ram using memtest86+, didn't come up with anything after a full run through. I also have tried using e2fsck -c to check for bad blocks, it finds none. I had a go at using smartctl but wasn't really sure what I was doing. I did a long test and it came up with nothing anyway.
This problem is in addition to the problems I've been having with my intel graphics chip and KMS. A lot of the time there are lockups when booting into X, which can only be gotten out of by a hard reset. This is sometimes what causes the original filesystem errors. I've stopped messing around with KMS for now to eliminate this but my current system in unbootable. I'm guessing my disk is wrecked but have as yet seen no definitive proof. Can anyone recommend anything that I should do?
I am currently on ext4 with a custom kernel 2.6.33-rc6 (the stock kernel shipping with slackware does not have the elantech extension for psmouse included). When I was using arch, I was just using the stock kernels.
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May 14, 2010
I have created 700 GB ext4 logical partition on my HDD. It is named sda7. Now I don't have read/write permissions, only root has those permissions.
How to change read/write permissions and how to mount it permanently?
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Jul 11, 2010
I just did a clean install of Ubuntu 10.04 and Linux Mint 9 with an ext4 (sda3) data partition to be shared between both. My issue is when I go to that partition and mount it within Nautilus it mounts read only. I've searched around but I have not found the solution. I don't have a problem mounting it using fstab and mounting at boot. But, I know I have to be doing something wrong for it not to work correctly through Nautilus.
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 25G 3.2G 21G 14% /media/7e66f3a0-e35d-40b0-8427-4abfd3b53d8a
/dev/sda2 25G 9.8G 14G 42% /
/dev/sda3 56G 32G 21G 61% /media/data
I partitioned the drive like this. Ubuntu sda1 primary partition ext4 25gb, Mint sda2 primary partition ext4 25gb and Data primary partition 56gb. I then installed Ubuntu 10.04 first, then Mint. Both Ubuntu and Mint mount that partition as read only.
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Dec 22, 2010
1. What can I use to read/write to my ext4 file system in Win7 x64? 2. I use Macbuntu. Is there any way to get a translucent top bar 3. My computer seems to be running hot while on Ubuntu. The fan speed seems increased. It goes back to normal on Windows though.
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May 2, 2011
Recently i formatted my HDD into 5 partition namely :-
1) Win Vista
2) Ubuntu /
3) Home
4) Swp
5) EXT4 (Purpose is to share files between ubuntu and vista)
I'm wondering if its possible to install Virtual Box on both OS but pointing only to 1 virtual machine.
Also if its possible to permanently mount the shared partition on both OS.
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Nov 19, 2009
There is explore2fs, but it does not support ext4 filesystem.
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