Ubuntu :: How To Ext Fragmentation Resistant
Apr 24, 2010
I told my friend ext3 and ext4 are very fragmentation resistant compared to ntfs and he questioned me as to what happens if a small file was removed from in between other file chunks and then another (larger) file was to be written and it wouldn't fit there; where would it go? His argument was that the ext filesystem does need to defragment in order to get past that and his argument seems logical. Does anyone know the answer to this? (because it actually captured my curiosity)
View 6 Replies
ADVERTISEMENT
Mar 3, 2010
I'm wanting to create a one-time snapshot archive of all my data in case something catastrophic ever happens to my main hard drive and my backup drive. I should add that I update my main backup regularly, which means that I wouldn't notice any creeping data corruption problems until it's too late...which is another reason a one-time snapshot is so important.Since I'm archiving a snapshot of all of my data at once, only a hard drive is big enough to handle the job. (I'll copy a small fraction - the truly 100% irreplaceable stuff - to DVD-R's too, but that doesn't mean I particularly want to lose any of the other stuff either.) Unfortunately, this means my storage medium doesn't inherently have any CRC's, error correction/redundancy bits, etc. built into it like data DVD's might.
So: What archive format would you suggest using for maximum reliability and resistance to corruption?My main concern is making sure that I can still open the archive and extract surviving files even if some of the bits (or the entirety of other files) go corrupt. This is my last-ditch fallback archive, so if I ever need to use it, I really, really don't want to get a message saying the archive is corrupt and cannot be opened at all! Because of that, it's important that the individual files and folders are compressed separately from each other...if at all. I don't care about the compression ratio, and I'd even be happy if the archive was 150% the size of my data thanks to a gigantic recovery record. I also care about CRC's and such, since I'll want to know which files/folders/etc. are corrupt vs. which ones are still intact.
View 9 Replies
View Related
Jan 30, 2010
How i can de-fragmentation of my hard disk in ubuntu. and what is the command for scan disk in ubuntu.
View 3 Replies
View Related
Aug 11, 2011
I heard that the ext file system does not causes file fragmentation. Could some one explain how this is achieved. And how come a file does not divides in to fragments as compared to Windows based Filesystems.
View 1 Replies
View Related
Aug 26, 2010
For some reason when i write a file to my NTFS-partitioned external HDD the files seem to get severely partitioned. This only happens when writing to it from within Fedora.
Windows Vista doesn't seem to do this.
This image is a screenshot from MyDefrag.
On my other hard drive i have a 7GB file consisting of 1400 fragments.
i'm guessing this is too much fragmented, because it was a completely empty hard drive before it wrote the file.
What could have caused this please? and how can i solve this?
View 4 Replies
View Related
Jan 11, 2010
Is there any way to avoid internal and data fragmentation?
View 5 Replies
View Related
Jan 6, 2010
I work with lots of big files >500MB. As ext3 does not provide the extents feature of ext4, I am concerned that some fragmentation may periodically affect disk performance. Noted I understand that using ext4 under these circumstances would be pointless, because the extents feature would be required to be disabled to allow compatibility using ext2fsd at this time, thereby removing any tangible ext4 benefit for my purposes.
Question Would an effective method of disk optimisation and anti-fragmentation be to simply copy all files from the ext3 media partition across to another entirely separate empty backup ext3 drive, before copying them all back over to the ext3 media partition again? Would this mean that when all the files are copied back again, they would be placed back in the 'correct and optimum order', so to speak? PS: I cringe in advance at the n00bs who are likely to reply to this thread with 'ext3 cannot become fragmented'!
View 9 Replies
View Related
Apr 21, 2010
I have millions of small chunks of new's and delete's in my program. Even though no memory leak is detected through valgrind or purify, memory grows. But the growth is degrading over the number of times of the execution of the tasks. Can i think that fragmentation plays a role in this?
View 6 Replies
View Related
Jun 29, 2010
I'm new to Linux, so I decided to try using Wubi to get started. THe problem is, when it finished installing 10.04, I got this message: OSError: [Errno 13] Permission denied: u'C:\ubuntu\install\ubuntu-10.04-desktop-amd64.iso' Is there any way around this? It might just be that overly restrictive thing called Vista (which I have the bad luck to be using). I was considering getting a USB drive for Ubuntu anyway..
View 1 Replies
View Related
Apr 11, 2011
I recently got interested with with OS.. So I downloaded wubi in Ubuntu website. I opted for the Ubuntu Netbook Edition as am using a lappy. However, halfway through finishing download I got an error. The log shows:
OSError: [Errno 13] Permission denied: u'C:\ubuntu\install\ubuntu-10.10-netbook-i386.iso'
View 1 Replies
View Related
Jan 2, 2010
What is the difference between the Ubuntu Installer for windows and the Ubuntu CD image? If I use the ubuntu installer for windows, does it have the capability to partition my drive, will it enable to share files with windows etc or is it just a way not to have to burn a CD. Just curious, the exact details of the installation files were not made clear on the website. Note: Windows Version: XP, 32bit, SP3. I have not partitioned anything yet.
View 2 Replies
View Related
Nov 19, 2010
I have windows 7 installed on Disk2 (according to windows Disk Manager), and I installed ubuntu 10.10 on Disk0, choosing the dual boot option at installation.
However, grub does not load (presumably because its on disk0 and my machine appears to boot from disk3), so the machine goes straight into windows 7.
How do I get ubuntu to load?
View 2 Replies
View Related
Oct 7, 2010
I'm currently running off of my live-cd, and after spending 4 hours of my life trying to fix this myself, i figured someone out here has to know how to help me. Basically, i wanted to try linux, then liked it enough to decide to put on one of my usb-drives (320g adata nobility NH92), and i couldn't get it to boot anything but windows w/o the live-cd, which would then boot the live-cd, lol, in other words, i couldn't get it to boot at all from the external, even though i had changed the setting in my bios to boot from usb first, and tried manually selecting boot from usb and all that fun stuff.
Sooo... eventually i decided it might be a problem with the bootloader, and while i'm not exactly sure at this point what i have done to my computer, all i can successfully boot is the live cd. When I try to boot w/o the live cd, whether i try to boot from my internal (windows) drive, or external, all i get is a device not found error.I think i could fix it if i had windows recovery cd's (i'm running xp, btw), or installation cds, but... unfortunately, they died in a terrible accident. So i have no cd's at all for windows. :/
View 3 Replies
View Related
Feb 13, 2011
I have been running Ubuntu 10.04 under Windows 7 (Is this call WUBI?) without any problems for a while. My other machines only run Ubuntu (9.04 & 10.04). I decided to give it a try to the latest Ubuntu 10.10. After going through the successful installation and then rebooting, I am getting the following error message once I select 'Ubuntu' in the boot up menu right after the BIOS screen: Booting ' Ubuntu 10.10, kernel 2.6.35-25-generic'
[Code]...
View 7 Replies
View Related
Jan 26, 2010
I'm wondering if this is even possible. I've searched high and low and have yet to find and answer to this particular setup.
The setup:
Router is in another building.
Desktop connected by WiFi
Laptop connected by WiFi
Both the Desktop and the Laptop are in the same building together. About 5' apart.
SSH server is setup on Desktop
FreeNX client is setup on Laptop
So they can connect just fine via WiFi for remote desktop control of the Desktop from the Laptop (so SSH and FreeNX are working).Is it possible to connect the 2 pc's directly to each other by Ethernet cable AND transfer files between them by Ethernet while still being connected to the Internet by WiFi on them both?Or would the WiFi have to be disabled while using the Ethernet connection?Neither has a Gigabit Ethernet NIC so I know it would at least require a crossover cable or another router to connect the 2 by Ethernet cable.The idea behind all this is to be able to transfer files between computers quickly by Ethernet while the computers are still busy doing other things on the Internet by WiFi.
View 9 Replies
View Related
May 11, 2010
I've been trying to find what would be the lightest ubuntu or ubuntu based distribution, I have an older PC I'd like to get up and running again, and would prefer something that works pretty quickly on it (for basic web browsing and other things) the specs are:
AMD Duron 900Mhz, 384MB RAM, 40GB HDD, Geforce FX 5200 128MB agp.
View 9 Replies
View Related
Sep 19, 2010
1. I accidentally wrecked a previous Ubuntu installation so I decided to re-install via the Ubuntu disk. Unfortunately Ubuntu doesn't let me override previous Ubuntu installations...
2. Ubuntu Maverick Meerkat is due to released in about 3 weeks. I want to install it via a clean install.
3. So can anyone tell me how to remove both Ubuntu partitions safely. I am currently running WinVista with Ubuntu Lucid Lynx. I know I have to use something like this to erase GRUB2. Can anyone give me a good tutorial?
View 1 Replies
View Related
Mar 14, 2011
I want to change from ubuntu 11.04 to ubuntu studio. Is there any way to do this without losing all my stuff/with out completely reinstalling the os?
View 7 Replies
View Related
Apr 19, 2011
The scenario is as follows - I will be moving across the country and my desktop will stay here powered and online, while I move with a laptop. I need a way to connect to the desktop for file streaming(music and movies) as well as using the virtual machines. I have thought about SSH and VNC.I need something failsafe. That's priority one. I won't be around to fix it if it breaks. I can set the computer to come on in the BIOS at a certain time if the power went out. But if I can get in remotely the whole setup is useless.SSH only provides terminal use, correct? So if I chose that route I would be able to access the computer via command line and play music and movies with mplayer and such, correct? But I would not be able to run the virtual machines? Because there will be no GUI, right?
I have been playing with Vinagre and Vino through the host and guest of a virtual machine and I cannot get it to connect. Is there a better application? x11vnc? I have forwarded port 5900 on the router and have upnp enabled. Got a better remote desktop suggestion?I would like to run this setup headless.(no monitor) I also would like to run it without a gpu if that is possible to make it more energy efficient.Both computers are 64 bits and will be running Ubuntu 10.10 and soon 11.04.Are these crappy ideas to begin with? Should I go another route to get my files and access the virtual machines?
View 4 Replies
View Related
Nov 24, 2010
After a reinstall of 10.10, I am able to turn on file sharing and so I set up a shared folder.
Windows Vista can see this folder but in my network place, there is only one icon, and it's a "Windows Network" icon. Upon clicking on that, I can see the local network, "Rompus Room".
When I click on Rompus Room, nothing happens for a while, then I get a message saying, "Opening "ROMPUS ROOM". Then I get the final message, "Unable to mount location", followed by, "Failed to retieve share list from server"
View 3 Replies
View Related
Jan 6, 2010
Is windows 7 UAC basically a user/system control system like sudo?
View 7 Replies
View Related
Jan 13, 2010
I was running 9.10 in LiveCD mode and was unable to get online. Went to System>Administration>Hardware Drives and found "Broadcom STA wireless driver". Cool. So I went ahead and installed 9.10 (dual boot with Vista), repeated above steps but found no "Broadcom STA wireless driver" option, in fact no proprietary drivers. So I still cannot connect to the Internet, and I don't know where to go from here. (Note: I installed 9.10 side by side with Vista: good? bad?)
[Code]...
View 9 Replies
View Related
Feb 5, 2010
So I wanted to replace my password prompt with this:it says to write it over the system files in ubuntu, under usr/share/gnome-screensaverbut i cant do that, as it says permissions are denied...
View 2 Replies
View Related
Mar 8, 2010
while installing ubuntu i made two partitions and set two load points. //home/but in ubuntu there is only one partition shown(filesystem).. what is going on?
View 5 Replies
View Related
Mar 25, 2010
when i login to Ubuntu all the icons & toolbars & taskbars are appearing in larger size.
my monitor size is 17" Samsung .
i dont understand how to solve the problem.
when i see on other systems its correctly detecting the monitor size and company.
but on my system its showing unknown for monitor company & the resolution 900 X 600 (16:10).
on my friend system the resolution is 1024 X 768(4:3). but on my system the max resolution is only 900 X 600 (16:10).
View 1 Replies
View Related
Apr 4, 2010
I'm about to install Ubuntu on two 250-gigabyte hard drives in a RAID 1 array, but I'm confused about how to partition my hard drives. How much space should I give to each partition? How many partitions should I create and where should I mount them? (I should mention that Ubuntu will be the only OS on this array.)
View 3 Replies
View Related
Apr 12, 2010
I am trying to install Ubuntu server edition on an old HP XT963 that recently came into my possession. I mainly just wanted to use it as a home file server and print server. I have been running ubuntu desktop on my laptop for a little under a year, but this is my first go at the server edition.
While ubuntu was installing it said "network autoconfiguration failed," I hit continue, thinking I could figure out how to configure it later. After lots of googling I still haven't figured out what exactly is wrong.
Code:
auto lo
iface lo inet loopack
after googling around I made it look like:
[Code]...
I would like to provide more information such as ifconfig and any other commands but I'm not exactly sure how I would do that without being able to copy/paste. I guess I would have the command dump the output to a file, but I'm not familiar with the -options this being my first time CLI-only.
View 9 Replies
View Related
Apr 12, 2010
I installed Ubuntu 9.10 and tomcat 6 java servlet container. I am trying to run the tomcat server on port 80, so I edited tomcat's configuration file (server.xml) and changed the default port from "8080" to "80". I launched tomcat server, went to my browser and entered:[url], but it says can not find server/location. Then I edit the server.xml and revert back to port "8080" and then enter: [url] and everything works fine. So my guess is some other service is taking up port 80, but I would think not, since I just installed Ubuntu and made sure apache isn't installed or running.
So I went to "System" --> "Administration", then choose "Network Tools". I then executed Netstat and did not see anything taking up port 80, but I do see port 8080 taken (assuming it is the tomcat server). Then I also did a Port Scan and entered my IP number. Again, I don't see port 80 taken, but do see 8080 being used.
I had a winxp laptop computer behind home wireless and was running tomcat 6 server fine with it, but it over-heated and died recently. So I got a used laptop and just installed Ubuntu 9.10. I have not changed my wireless router settings. It is the same as before. So I have ruled out my home's hardware/network equipment.
So here now I sit, wondering what is up?
For security reasons, is port 80 initially blocked by Ubuntu for some reason? Is there something I have to do beforehand to free up port 80?
View 2 Replies
View Related
Apr 30, 2010
Alright guys, I'm out of ideas...
I have a system here with three harddiscs, the first is a 500GB disc which is supposed to contain Windows 7, the second is a 250GB disc for Ubuntu 10.04 and the third is a 1TB drive which contains all my music, movies and stuff like that.
Now I installed Windows 7 first, then Ubuntu 10.04 onto the other disc.The thing is that the Ubuntu-Installer gave me the option of installing them side by side by shrinking the Windows Disc, which I don't want it to because I hate to clutter up ONE drive with more than one OS, So,after installing and rebooting into Ubuntu, I went to see if I could still start Windows 7, which I now can't.
Is there a way to have Windows 7 and Ubuntu 10.04 playing nicely together WITHOUT swapping the SATA ports or something like that?don't ask why i'm giving Ubuntu the smaller drive... I'm still a gamer, and my games need a lot of space.I just want to make a switch to Ubuntu for the times where I'm not playing any kind of Games.
By the way: Both Operating Systems where installed in 64-bit flavour.
View 9 Replies
View Related
Jul 2, 2010
A few days ago I ordered a UMTS USB-stick from Fonic and I received a Huawei model E1550. Win and Mac install files are on the stick, but nothing for Linux. I found for the USB Modeswitch "drivers" at www.draisberghof.de/usb_modeswitsch/ (nothing about the program source on the producers web page - strange), but the install gave me a lot of errors, and after a while, I decide to find another "approach". I think you might find this useful. This is my approach for Ubuntu 10.4 LTS. Open your terminal and type:
# sudo apt-get install udev-extras
and add a new udev rule:
# gksu gedit /etc/udev/rules.d/15-huawei-e1550.rules
In the pop-up window make the rule like this:
SUBSYSTEM=="usb",
SYSFS{idProduct}=="1446",
SYSFS{idVendor}=="12d1",
RUN+="/lib/udev/modem-modeswitch --vendor 0x12d1 --product 0x1446 --type option-zerocd"
Save and close. To setup you mobile broadband connection go to System / Preferences / Network Connections, (or type in terminal ~$ nm-connection-editor) select the Mobile Broadband Tab, Add new and follow the assistent. The only changes I made, are the country of the provider, and the provider. (In my case Germany, Fonic) If you have to type in the settings yourself for Fonic, visit [URL] If the device is plugged, it will connect after a few seconds.
View 5 Replies
View Related
