Ubuntu :: Sometimes Ext4 Home Partition Remount Read Only
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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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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Aug 28, 2010
I need a program that allows windows xp to read EXT4 partition. ext2explore.exe is not good, it doesn't give other windows applications direct access to ext4.
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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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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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Mar 31, 2010
I installed fedora 12 and windows 7 in pc. i can not access fedora partitions from windows. which software is suitable for this?
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Jun 4, 2010
I have dual boot: Ubuntu 10.04 and Opensuse 11.2.Howto mount Read Only ext4 partition from Opensuse in /etc/fstab under Ubuntu?
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Apr 27, 2011
I have one computer with windows and one with ubuntu. I have an external drive (FAT32) with files taken from an NTFS (mp3s and such) and I would like to put them and use them on an ext4 ubuntu platform. Can I make a partition of the /home folder NTFS and the system ext4 and function properly? I do have configuration files in the /home folder since Im building a domain controller that utilizes samba on ubuntu: would I be better off using a dual boot with windows/ubuntu and placing the files on the Windows partition? what is my best option?>
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Jan 28, 2011
Can windows read files from a home file server with an ext4 file system? or do I have to partition the drive with the server (ext4) and an ntfs partition with the files on?
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Apr 13, 2010
I have a separate home partition setup with root on one drive and /home on the other. After using the computer for awhile the /home partition will remount itself as read only. Fsck did not find any errors and reformatting did not fix the problem. Rebooting makes the partition work normally for awhile but the problem comes back eventually. SMART testing did not find any problems with the hard drive. (It's a seagate so that may not be accurate.)
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Feb 7, 2011
I have downloaded voyage linux 6.5 based on lenny. One of the last things it says is mounting filesystem as read only. then asks me to do login. how to stop this action and eave the file system as Read/Write.
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Mar 7, 2010
I tried to compile a 2.6.33 kernel following Alien's guide.
I pretty much used the default values for every (NEW) option avaiable. I used "make localmodconfig" on my current config (zcat /proc/config.gz) and then tried to use "make menuconfig" to check if I could change anything. I didn't understand most of the options, so I skipped it. Then I used "make bzImage modules" and "make modules_install", copied the files mentioned on the wiki and run lilo.
But when I try to boot using my custom kernel, it gives an error like "Cannot remount read-only filesystem as read-write! This can cause serious problems."
If I try to continue the boot, it hangs when trying to launch the syslog script...
The new kernel entry on lilo.conf is:
Code:
image = /boot/vmlinuz-custom-2.6.33
root = /dev/sda4
label = newkernel
read-only
just like the default kernel entry.
By the way, one thing I changed is the kernel compression format, which I set LZMA. But it didn't seem to be the problem, since it at least started...
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May 21, 2011
After update to 11.4, I would like to regain access to my encrypted home that I left intact. Both user.img and user.key files are there, but when I create the same user again in YaST, it does not recognize their presence and it asks again for size of the image. I am afraid it will just overwrite the old image. I do have full backup of hte data, but since its 150GB, I would rather not have to transfer it again.
How can I remount my old encrypted home?
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Aug 16, 2011
while since I've been here. I'm having an issue with a fresh install of 11.04. Due to work requirements, I encrypted my home folder, which is fine, however, it seems to randomly lock itself down while I'm working, and it's getting really annoying.
Apps stop working, I can't open nautilus (something about not being able to create certain folders because home is locked), hell, even the terminal link on my desktop says failed to launch application (though the launcher on the top panel works). I just have to run ecryptfs-mount-private and enter my password to fix it, but it's doing this every 15 minutes or so. what might cause it to relock itself so frequently? I would expect to not have to deal with mounting my private data, that should happen at login and be good until log out.
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May 19, 2010
I had 5.4 machine. Upgraded to 5.5 today via yum upgrade. All went fine. Rebooted. Wanted to convert root partition to ext4 (I have three partitions: /boot, / and swap). All of them on software RAID 1 (root is /dev/md2). I did the following for converting
yum install e4fsprogs
tune2fs -O extents,uninit_bg,dir_index /dev/md2
nano /etc/fstab # I indicated here that my /dev/md2 is of ext4
[code]....
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Dec 21, 2010
My linux distro is CentOS 5.3. Today I edited /etc/sysconfig/readonly-root and set "READONLY" to yes, now my /etc/sysconfig/readonly-root file is like this:
# Set to 'yes' to mount the system filesystems read-only.
READONLY=yes
# Set to 'yes' to mount various temporary state as either tmpfs
[code]...
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Jan 14, 2010
Trying to clean install 11.2 dual boot with Win xp already installed. How do I create a new home partition, don't want to preserve the existing home partition from a previous attempt. DVD installation and automatic config keeps saving the thing.
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Jul 18, 2011
I just installed ubuntu via the windows executable and I couldn't mount my NTFS partition. I found this a little odd and I checked fdisk and it seems to think I don't have an ext4 partition as my entire internal HD is displayed as NTFS.
Here's the fdisk output:
When i try to mount the NTFS partition /dev/sda2 i get the following output:
I can't make heads or tails out of this. Anyone know what's going on here?
Windows recognizes that 30GB were taken from the NTFS partition for my linux install. It reads the max partition size as 465GB. fstab reports the NTFS partition size as 488GB.
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Jun 9, 2010
my system I want user1 and only user1 to be able to mount and unmount a specific partition, this partition contains backups and is usually mounted read only, needs to be temporarily mounted read/write by user1 while doing the backup.user1 is an unprivileged user. I've read that the user option will let any user mount the file-system (and only that user can then subsequently unmount it) and that the users option allows any user to mount or unmount the file-system.I also found this in mount's man pageQuote:The owner option is similar to the user option, with the restriction that the user must be the owner of the special file. This may be useful e.g. for /dev/fd if a login script makes the console user owner of this device. The group option is similar, with the restriction that the user must be member of the group of the special file.So it looks like I'd need a login script for that user to make the user owner of the device file (/dev/voiceserv/backup in this case)
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Sep 19, 2010
I have an external 320gb Hard drive. My plan was to have 250gb for My Documents of mainly music, films and word documents. And 50gb set aside for ubuntu, in a separate partition.To do this I need to partition the 50gb partition as ext4? then add a swap file of how big? Do i even need a swap space if I have 4gb of physical RAM?
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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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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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Jan 29, 2011
I want to convert a vfat partition into an ext4 partition. This is on my wife's machine and she deleted the Windoze partition as she now prefers Linux. Here is the (edited) output from fdisk -l:-
/dev/sda2 514048 4708351 2097152 83 Linux
/dev/sda3 4708352 6805503 1048576 82 Linux swap
/dev/sda4 52693200 234436544 90871672+ f W95 Ext'd (LBA)
/dev/sda5 59006800 234227699 87610446 83 Linux
I want to change /dev/sda4 to 83 to free up space for Linux without losing the partitions in this 'extended' partition!
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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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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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Nov 19, 2009
There is explore2fs, but it does not support ext4 filesystem.
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Nov 10, 2010
I searched on googlehere on forum, but no one answer, how can I write on ext4 partitions?As root I can write!!Here some informations:
cat /etc/fstab
/dev/disk/by-id/ata-WDC_WD2500BEVT-75ZCT2_WD-WX20A5959889-part6 swap swap defaults 0 0
[code]....
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Jan 25, 2010
I compiled a kernel using a previous kernel config after I switched to the ext4 file system. Previously it was using ext3 and the kernel compiled and ran fine. I added support for ext4 to the config but when I went to boot I had a kernel panic. The error was "kernel can't mount vfs on (8,5)". Root is on sda5, I don't know what the 8 is. I started over, using mrproper and made a new config, but got the same error. I created an initrd with the ext4 file system but then the kernel said it couldn't mount root on ext3 because of unique options. (something along those lines) I booted back into the default kernel and saw that it had a similar error right after the bios check, but it loaded fine. I'm wondering why the kernel is saying that the ext4 file system is ext3.
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Jan 8, 2011
My computer start to .It just stop for a minute before continuing the boot
EDIT: Could this be the cause?
Log of fsck -C -R -A -a
Sun Jan 9 23:45:42 2011
[code]...
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Mar 28, 2011
recently i made a backup of my home directory in 10.10 before reinstalling 10.10. again.This time I chose to manually define the partitions (50GB Root, 25GB Swap, 325GB Home)Now i wish to migrate the old home into the newly installed home, which is on a separate partition.I have found the following documentation URL...Still, as a beginner I am not quite sure about the necessary steps to perform.As the new home is located on a separate partition is it possible to simple delete all directories there and copy all directories from old home to new home with rsync?
Do I have to install all the software that corresponds to the old home first followed by migrating home or first migrating home followed by installing the software such as thunderbird, Texlive2010 etc.Guess that migration should take place at a later stage. Otherwise my old profile files from firefox and thunderbird will be overwriten by new ones?
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