General :: Instructions Work When Turning Of Journaling On An Ext4 SSD?
May 27, 2010
I have an Acer Aspire One with an SSD for storage. I recently installed Ubuntu on it and chose ext4 for my filesystem. Then I read that journaling on an SSD isn't the best idea, so I will try to disable journaling and I have found these intstructions [URL]..
# Create ext4 fs on /dev/sda10 disk mkfs.ext4 /dev/sda10 # Enable writeback mode. This mode will typically provide the best ext4 performance. tune2fs -o journal_data_writeback /dev/sda10
# Delete has_journal option
tune2fs -O ^has_journal /dev/sda10
# Required fsck
e2fsck -f /dev/sda10
[Code]...
I will use them on my boot partition. Are there any particularly bad parts here, or are there any missing steps? Will my boot partition be fit for being on an SSD after this? Or should I consider switching to ext2, or even reinstall it all and choose ext2 at partitioning time (I'd rather not though, since I've configured quite some stuff already)?
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May 7, 2011
I bought a ssd drive for my laptop, installed it, installed Windows 7, installed Kubuntu 11.04. Till then everything worked fine, and I had following partitions on my disc:
Code:
/dev/sda1 ntfs ~100MB win boot,
/dev/sda2 ntfs ~170GB win main,
/dev/sda3 extended
[code]....
It worked fine. While using 11.04 I encountered a serious bug in nvidia 270.41.06, and decided to switch to Kubuntu 10.10. I installed 10.10 on the very same /dev/sda5 (clicking a checkbox to format it). Everything worked fine, grub was installed and pointing to win7, and kubuntu 10.10. I disabled ext4 journaling as above, rebooted, and found, that grub now points to win7 and 11.04, and that system (which should have been removed during installation of 10.10) loads perfectly fine. I checked where 11.04 had been installed - still /dev/sda5. Win7 loads fine as well, so no linux on /dev/sda2 I checked if there was 10.10 kernel in /boot - no. File system on sda5 had no trace of 10.10.
I formatted sda5 with gparted, installed 10.10 again, disabled journaling and situation repeated, whole file system on sda5 changed. Enabling journaling did nothing, 10.10 didn't come back. I deleted sda3, sda5, sda6, made them again, installed 10.10, disabled journaling, and finally had my 10.10 on ext4 without journaling. So this is kind of solved, but I would still like to know that the hell happend? For the moment it looked like two file systems coexistened on one partition.
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Mar 11, 2011
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Jun 27, 2010
I have been following (200 instructions on how to do a clean install without losing settings.I used the command<sudo dpkg --get-selections > /home/user/package.selections>to create a list of installed applications.My problem is that the instructions to reinstall those packages does not work. The code given is<sudo dpkg --set-selections /home/package. selections && apt-get dselect-upgrade>.However when I try and run this code I am told that "--set-selections takes no arguments".So I need some revised code to reset the list of applications for re-installation
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Apr 20, 2011
Is there a way to use JFFS2 (or other journaling file system) on an HDD? I'm looking for a file system feature that doesn't overwrite previously written data on an HDD.
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Jan 12, 2010
I've got a little netbook, and all works fine, except for one small thing. I'm able to connect to a wireless network with my Atheros AR5001 just fine. However, if I right click on the network icon, and disable network or wireless and enable it again, wireless won't work anymore. I can't see and connect to any network at all. Except when using airodump-ng from the famous aircrack-ng tool set. When using airodump I'm able to see any network and their specs just fine. I don't even have to be in monitor mode to do airodump-ng (the wireless must be off in the network manager though). Is there any way of getting my wireless back when I turn it on again?
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Sep 28, 2010
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Jul 25, 2011
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Jun 8, 2010
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Mar 27, 2011
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Jul 6, 2011
I am trying to install debian on a slow netbook, and I can only install to a bootable SD card. The SD card is 200x, so it should be fairly fast. I was just wondering what filesystem would be the fastest, and use the least amount of cpu. I think it should be a non-journaling one, since this is flash media. I was thinking ext2 originally, but I heard ext4 has a non-journaling option, and is faster. However does ext4 take up more cpu usage?
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Aug 23, 2010
Does latest Debian64 stable work with ext4 filesystem?can its root partition be ext4?
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May 17, 2010
Does anyone know of any high-quality journaling software out there for F12KDE? I tried Keepnote, but it is not installing properly. Needs a Python(abi) dependency.
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Feb 17, 2010
I was reading a website about securely wiping data from your hard drive with wipe on the right click menu, when I stumbled across part of the article where it talked about journaling filesystems.Article
Quote:
There are three types of journaling: journal, ordered and writeback. Using shred, with an ext3 file system presents the user with the problem of secure deletion because it can only really be effectively used with ordered and writeback journals. It also lists ext4 as a journaling file system in the article, so I looked up the wikipedia page on it and I also found this:
Delayed allocationExt4 uses a filesystem performance technique called allocate-on-flush, also known as delayed allocation. It consists of delaying block allocation until the data is going to be written to the disk, unlike some other file systems, which may allocate the necessary blocks before that step. This improves performance and reduces fragmentation by improving block allocation decisions based on the actual file size. So I am confused about this delayed allocation thing. My thoughts are that ext3 and other journaling filesystems are bad to use with secure wipe when they are set on journal mode because that writes the file to the journaling sector as well as to the hard drive. Apparently, in ext3, the default was ordered mode. I would like to know if anyone has any idea if the ext4 file system on karmic 64bit is hazardous to the security of using the wipe command.
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Mar 12, 2010
I use Slackware64 -current. I will buy a SSD drive, normaly the filesystem in my laptop is EXT4. Is there anything that I need to know? How to improve life of the SSD? Is journaling a good option? How to disable?
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Jul 4, 2011
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Nov 18, 2010
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Feb 19, 2010
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I am not asking how to wipe the whole drive with dd or anything, but I am simply asking if there is a tool that'll delete a single file securely.
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Apr 23, 2010
I got a problem booting ubuntu 10.4 RC but i solved it by replacing root partirion uuid in grub boot menu then I disapled totally uuid passing to linux from /etc/default/grub . but something else i noticed why grub choosed insmod=ext2 why not ext4 specially I use now ext4 .I tried by editing the grub boot menu replacing "insmod=ext2" by "insmod=ext4" it booted and the three lines error during booting that i used to see them science ubuntu 9.10 totally disappeared . really I dont understand can anybody explane for me.and if what i did was right ,can anybody tell me how to make grub always and permenantly detect ext4 as ext4 not as ext2.
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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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Feb 27, 2011
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Mar 19, 2010
I have an embedded board with a small UPS. When AC power goes down, I need to turn off all power hungry devices in order to have a clean shutdown. First thing I do, is set DPMS to force powerdown, then go through the usual SIGTERM/SIGKILL/umount sequence. I have an Intel i915 Display adapter connected to an LVDS LCD panel.
Unfortunately, when Xorg dies, Xserver or the VT code turn the LCD panel back on.
I even tried working around it by directly poking the panel enable register in the Display chip, so that X doesn't know about it, but the panel goes back on when the VT comes back.
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Feb 7, 2010
In Ubuntu 9.10 is there any way of turning off Keyring to Evolution email.
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Jun 24, 2011
I'm using an hp pavilion dv2000. i turned the wifi switch off by mistake, the LED turned orange and the wifi got disconnected. and now when i turn the switch on, it remains orange and the wifi still isn't functional. this happened before; i found a fix that worked searching google. it was done via terminal commands and i didn't have to download anything but i can't find the solution anymore!
wlan0 shows up when i use:
more results:
It's still hard blocked! even though the switch is turned on; gives the same result eitherways
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Jan 4, 2011
ibv4l2: error turning on stream: No space left on device
Webcam work in:
fps: 1/30
formate:JPEG/WMV
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Jan 12, 2011
I was reading about ext3 feature and I have read about its journaling modes. I would like to ask what is the default journaling mode of ext3 fs in slackware(or is it in all distro using ext3)? I'll install slackware when my new pc arrive and the fs I will use will be ext3 and I like it to have data=journal mode for its journaling. I have read in some wiki how to set the journaling mode into data=journal mode.
Code: # tune2fs -O has_journal -o journal_data /dev/sdXY Do i need to issue this command or is this the default mode in ext3 in slackware?
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Jun 27, 2010
Well I downloaded an ATI driver, and there are some installation instructions:
Launch the Terminal Application/Window and navigate to the ATI CatalystTM
Proprietary Linux driver download. Enter the command sh ./ati-driver-installer-10-6-x86.x86_64.run to launch the ATI CatalystTM Proprietary Linux driver installer. The ATI CatalystTM Proprietary Linux Driver Setup dialog box is displayed.
My result:
marek@marek-desktop:~$ sh ./ati-driver-installer-10-6-x86.x86_64.run
sh: Can't open ./ati-driver-installer-10-6-x86.x86_64.run
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Mar 9, 2011
Im following the instructions to download and install ubuntu, using a USB stick from this site I cant post URLS yet (not 15 posts) but it was the ubuntu download site.
Step 1, downloaded 32 bit ubuntu file
Step 2, clicked on USB stick, and windows and show me how.
Insert a USB stick with 2gb DONE Download universal usb installer DONE Click run... DONE
Selected UBUNTU 10.10 from the dropdown list DONE And here is where I got stuck Click Browse and open the downloaded ISO file. Well I went to the place I unzipped the ubuntu files, NO ISO FILE.
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Feb 18, 2010
I dual boot on separate HHDs. I have just done a fresh install with updates. I installed the restricted driver from the repositories, and I get an error message from ati catalyst (administration). Also I have "unsupported hardware" at the bottom of the screen.
Graphics card is a XFX ATI HD 5770 on this system, and I just sold 2 8800 GT's yesterday, and bought two more XFX HD 5770's for CF in my other system.
I didn't do a bad thing, 'cause I was really groovin' on Ubuntu, that I just installed at the beginning of the week.
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Oct 25, 2010
I'm new to linux, have been somewhat of a computer geek my whole life and thought it about time that I delved into the world of linux. So I installed ubuntu 10.04 on my computer. I love it. However, I can't get my wireless to work. In my dorms there are no ethernet hookups, so I have to use the wireless. I typed "sudo lshw -class network" into the root terminal. The important things that I figured out was the bus info: pci@0000:4:06.0 and the pysical id: 6 (not sure if the physical id is important but it sounds like it is). I then did a lspci and found that at bus 04:06.0 it is a RaLink Device 3060. I downloaded the .tar file for the driver. I could not find instructions for it online so I followed the ones for the rt2860 driver : [URL].... I could not get it to work, It built ok and installed ok, but when I do the modprobe I get an error saying the device or resource is busy. Either that or that it cannot be found. One thing that I found weird was that I couldn't get it to build a 3060 driver, it would only build a 3562 one.
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