Fedora :: Pinpoint Which Component Of Machine Is Dying
Apr 16, 2011
I am trying to pinpoint which component of my machine is dying. Here's what I get when I try to install Windows 7: The specified I/O operation on DeviceHarddisk0DRO was not completed before the time-out period. I have tried changing hard drives, swapping memories (running them in single and parallel), changing BIOS settings, etc. When I run a live CD with Fedora, it will come up fine but when I try to install it runs like a snail. It will never complete.
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Sep 16, 2010
im trying to use ddrescue to clone a dying disk to a remote machine using ssh. this is my command:
Quote:
sudo ddrescue --block-size=4KiB /dev/sda1 - | ssh user@address 'cat /data/backup.img'
it returns the error "cat: can't open '/data/backup.img': No such file or directory"
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Jun 7, 2010
I have a 2TB USB drive which I use as a backup device - I dump two filesystems onto it, totalling around 1TB. However, doing the dump trashes my F11 system, making it basically unusable, not only during the dump but also afterwards. I have 8GB of RAM, all of which is needed and normally in use, but when dumping, the system starts hogging huge amounts of it as buffer space - up to 1GB of RAM is reported to be allocated. And rather than using free memory for buffer space, it seems to aggressively swap processes out to get it. The system tends to melt down as a result, and just switching virtual desktops can take 5 minutes.
But after the dumps finish, the problems continue - the system is currently trying to keep around 700-800MB free, and continually swapping out processes to do so, even after the buffer space in use has gone back to about 100MB. This seems like strange behaviour for a fairly common type of activity. Presumably a lot of the buffer space is used to store what is being read from the filesystem (which will never be needed again), and some is used to cache the writes to the USB drive which is slower than the internal hard drives.
I have spent a lot of time trying changes to some of the kernel parameters, after reading articles about them. Of all the ones I've tried, setting vm.dirty_ratio to 1 instead of 5 helps a bit, and setting vm.dirty_background_ratio to 5 instead of 20 makes some improvement I think. Setting vm.swappiness to 0 doesn't seem to help at all.
So my question (at last!) is - how can I back up my filesystems without my system dying? In particular, can I limit the space used for buffers somehow, or turn off buffering for the dump process? And why does dumping result in the system artificially keeping huge amounts of space free afterwards, so I have to reboot to make the system usuable again?
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Mar 10, 2011
I'm pretty sure the hard disk on my FC5 system (tells you how old it is!) is failing. It's a 500GB drive and I have a second hard disk that's 1.5TB (if I remember right) as a secondary.I would like to (ideally) just migrate everything -- settings, MBR, OS, home dirs, etc., everything -- to a different drive, take out the one that's on the fritz, and reboot the system with everything as it was...just a new hard drive.
Alternatively, I figure I could remove the old drive, move the secondary one into place as the primary, reformat it (assuming there's no data I need), and then install a fresh FC version and from there, migrate data from the old one as needed. I've done this latter method before and assuming the hard drive doesn't totally go, it should work. But I'd really RATHER have somehow a "mirror copy" of the 500GB drive that just seamlessly replaces what's currently there.
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Dec 4, 2010
I had a RAID1 array with two disks. I wanted to remove one of the disk and replace it by a new one. I first expanded the array from 2 to 3 components and let RAID rebuild completely. When this was done I used Gnome disk utility (palimpsest) to remove the component on the disk I want to get rid of. It looks like palimpsest did mess up somewhere because the array is no displaying as degraded. How can I get rid of the "removed" entry (was /dev/sdc1) in the RAID array (and hopefully have it come in Running state)?
#/sbin/mdadm --detail
Raid Level : raid1
Array Size : 732570841 (698.63 GiB 750.15 GB)
[code].....
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May 11, 2010
SITUATION/411: Trying to avoid some ultimate data loss here. - Bad superblock reported by fsck.
SIZE-UP:
Make & Model=Maxtor DiamondMax Plus 9 80g
USB at /dev/sdg - external.
Host Operating System version=F11
Running Kernel=Linux **********.*** 2.6.30.10-105.2.23.fc11.x86_64 #1 SMP Thu Feb 11 07:06:34 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux
MITIGATING FACTORS:
Was a dual boot drive.
Partitions as follows:
[Code]...
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May 3, 2010
If I start it up, and it's fast, it's like that through out. But if I start it up, and it's slow, it is slow like that for a whole time, and doesn't recover. When that happens, I saw the CPU almost 100% all the time. The hard drive light indicator would be on all time time. The top command doesn't indicate any process that use a lot of CPU. It just has a high "wa" percent. My remedy so far is to restart the machine, and hopes it's fast again. Sometimes it does sometimes, it doesn't. It always start up to the login screen very fast.
However, even before logging in, I can see it's slow if the hard drive light is on all the time, and not blinking). Even typing in the password would show a slow echo of the *. This is OpenSuse 11.2, 64 bit. The file system is ext4 (I wonder if it has something to do with this). Does anyone have any pointers on how to troubleshoot this? I may do a re-install. However, if the hard drive is failing, then I'll just back up and wait for the day it stops working.
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Jun 21, 2011
Overnight, I upgraded from KDE 4.5.1 to 4.6.3 and had a rude awakening this morning when I found that KDE had managed to, once again, break the Task Manager "force rows" behavior which had been fixed a few major releases ago. I found this lovely patch that had been applied:
[URL]
And thus broken the functionality, and I want to recompile that particular plasmoid with the patch removed. However, I am completely unfamiliar with CMake or building anything at all, for that matter. All my programming is done in PHP which means I'm pretty much completely lost. I'm in the midst of pulling down the kde-workspace tree with git, and already downloaded and modified a separate copy of the file in question to look the way it is supposed to. I don't want to rebuild all of KDE, just the one module.
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Jul 9, 2010
So my hard drive is getting more and more bad sectors so I need to remove it but I can because the screws are hard to unscrew with a normal screwdriver!!! I need a smaller one and a small hand too! :/ Stupid Compaq! I need help. I wasted money on getting a new video card and more ram and some thermal paste or something like that to put the heat sink on something, lol.
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May 27, 2011
I manage an Apache 2.2.3 web server. It stops working several times an hour, so I removed the semaphores and restarted it as a workaround, but I dont know what is causing this. Lately i've noticed that the workaround is not working at all.
Code:
0 */1 * * * /usr/bin/ipcs -s | grep apache | perl -e 'while (<STDIN>) { @a=split(/s+/); print `ipcrm sem $a[1]`}'
0 */1 * * * /sbin/service httpd restart 1>/dev/null
Below is what I can see in my error_log file.
What is the mutex message telling me. To be honest, I don't know much about semaphores nor how they work. You can see after the semaphore issue, that Apache is sent the SIGTERM signal. I have seen other posts on this topic, but not explicitly with Linux 2.6.22 and Apache 2.2.3 with a description of the issue and a permanent fix.
Code:
[Fri May 27 22:00:04 2011] [emerg] (43)Identifier removed: couldn't grab the accept mutex
[Fri May 27 22:00:04 2011] [emerg] (43)Identifier removed: couldn't grab the accept mutex
[Fri May 27 22:00:04 2011] [emerg] (43)Identifier removed: couldn't grab the accept mutex
[Fri May 27 22:00:04 2011] [emerg] (43)Identifier removed: couldn't grab the accept mutex
[Fri May 27 22:00:04 2011] [emerg] (43)Identifier removed: couldn't grab the accept mutex
[Fri May 27 22:00:04 2011] [emerg] (43)Identifier removed: couldn't grab the accept mutex
[Code]...
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Mar 1, 2010
On my 64 bit Cent OS 5.4 servers/workstations, my Passive Mode FTP iptables rules constantly stop working. If I do a lsmod | grep -i ip_conntrack_ftp
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Jan 26, 2010
I had to reload my openSuSE 11.1 and reloaded KDE 4.3.4 from KDE Repositories and did an unconditional update on KDE Core and Community to ensure I got all the current versions back.
I am now having an issue with at least two plasmoids that is regularly used. When I attempt to add them to the desktop, I get the message "component not found". This happens to at least these two, yasp and yawp for system status and weather. It may happen to others, I haven't tried.
They are both loaded and both are present in /usr/share/kde4/services. I removed them using YaST, then rebooted, then re-added them, then rebooted and still get the same result, component not found.
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Apr 11, 2010
how to cross-reference it but searching on 'Could not initialize the browser's security component' will find it. Then look at the last 3 entries. Me and two other users have been unable to use Thunderbird since yesterday's update.
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Feb 22, 2011
Long time Ubuntu user, but it's been a couple years.
My friend had an old Dell Dimension E251 lying around and I said I'd help him turn it into a media center of sorts. The old 52" HDTV he wants to plug it into has a broken vga input and no HDMI, so our only real option is component or (heaven forbid) S-video. He can afford to get a new video card if it's relatively cheap, and I'm not really sure what would be our best option. Does anyone have a card in mind that would be relatively hassle free? I considered getting a card with HDMI output and using one of those HDMI to component converters, but my research suggests that that won't work. Are there old cards with component out, or is there a card that makes this relatively easy to achieve?
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Mar 3, 2011
The web server component of Apache isn't actually called "Apache" right? It is called something else? I didn't realize there were so many parts. Also, is there a good newbie introduction to how to configure it for a basic web server?
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Jan 23, 2011
I'm using BSNL 3G USB datacard in India. After connecting to internet, if I leave without browsing, the connection is dying. But if I'm running any downloads in the background, it's staying alive. I'm facing more of this problem when I'm using Ubuntu. And if I'm browsing the download speed received is less than the speed received while downloading using a download manager.
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Mar 20, 2011
Today I've setup Debian Squeeze for netbooting with tftp-hpa and isc-dhcp-server. I have also downloaded-only all gnome packages (apt-get install -d gnome) and setup a small apt repository for base system and gnome on the same pc (server).However, my small apt repository is missing debian installer components like libc-udeb, dmsetup-udeb, ppp-modules-udeb, etc. The question is: Where to obtain those packages and their dependencies? I cannot find or download them with apt-get nor aptitude.
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Jul 2, 2010
Does anyone know which component of the GNOME desktop is responsible for interpreting the media buttons on my keyboard? I would like to run this component in KDE, because KDE doesn't handle the media buttons correctly. I am not talking about the icon in the system tray.
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Aug 6, 2011
Ubuntu shows the following error message when I try to launch Firefox "Could not initialize the application's security component. The most likely cause is problems with files in your application's profile directory. Please check that this directory has no read/write restrictions and your hard disk is not full or close to full. It is recommended that you exit the application and fix the problem. If you continue to use this session, you might see incorrect application behaviour when accessing security features." No other program including Google Chrome has this problem.
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May 29, 2009
I am using a NVIDIA 9400GT video card on the latest Ubuntu. I believe the video card is a DVI-I port because it has the correct pin settings - [URL] I am using this DVI to Component adapter - [URL] The adapter is marked with Y Pb Pr above the RCA jacks. So it is analog and the vido card port is DVI-I ... all is correct ...
I am connecting to a DYNEX DX-LCD22-09 TV with HDTV component cables. The TV accepts both YCbCr and YPbPr signals. When I first boot the linux box there is no signal. Then right before it auto logs in I get a picture that is all green on the right side, black everywhere else and the TV displays it is at 1280x720 60hz. Finally the screen goes blank when the machine logs in - no signal! I have tried all combination of the adapter settings and have looked over the component input and output cables many times to insure I have it setup correctly.
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Oct 6, 2010
I am trying to install Android development plugin to Eclipse, but it has a problem with version (i think). I installed my eclipse using yum.
Now, I want to try uninstalling eclipse and use the version from the eclipse.org website instead to avoid this problem. I run rpm and got the folllowing mesg.
Code:
How do I uninstall all the eclipse component and re-install it fresh?
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Jan 20, 2009
In Ubuntu I can easily transfer packages from offline machine into online machine using APTonCD feature. In fedora ,Is there anything similar by which I can transfer my packages of online machine into the offline machine
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Jun 8, 2011
I am currently using opensuse to run a server, however I am experiencing some difficulties. Every once in a while, and I mean completely randomly. This will occur out of no where, and then not happen for five days, then occur twenty times in a row. What happens is the computer runs fine, and all is well but suddenly it wont connect to the internet. All applications are fine and everything is working. It isn't frozen, just won't load webpages. I am using a belkin 111v2 wireless g adapter and it usually works fine.
So when the internet freezes, if I unplug any usb the computer freezes. The mouse stops moving and the keyboard won't respond. The caps lock light won't even turn on. However the laser on the mouse is on, but the computer won't respond. Its like its shutting off the usb hubs. The only thing to do is force shut it off and restart until i no longer have the problem. Sometimes it helps if I open it and re-seat the ram, but that gets old. Does anyone have a solution?
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Apr 12, 2010
My 13 year old Pentium 3 1.3 ghz machine is finally ready to call it quits. specifically, my slave drive where all of my music is stored. I can access a very small portion of the the files on the HD, The files are still there but are not showing up. any ideas on how I could access this drive. I wanted to try to reinstall my os on the primary drive in hopes that it wouldget it working, unfortunately I've run into what's seems to be a common problem of my usb keyboard not being recognized.
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Dec 17, 2010
I had an old laptop (POS) with Lucid installed. I was updating to Maverick via Update manager. Well, I had a feeling my HDD was failing but it finally bit the dust on me, and the laptop never booted up properly after the update... I then put together a new laptop with a new drive, I can connect my old drive via USB to the new Lappy, and pull any essential data over to the new system, my question is. How do I import the list of apps I used to run into the new lappy, to have Aptitude or apt pull down and reload everything I "was" using? I figure there is a simple way, just not sure how to do it from a non-running distro via usb connection..
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Feb 3, 2010
I've had this problem in the past, but it's more frequent for me now. Running Ubuntu Karmic (9.10), and if my browser is open long enough the audio in flash dies until I restart my browser. I'm running Chromium (non-google branded). I'm fairly certain this is happening in Firefox too.
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Feb 20, 2011
I have an issue with the manner in which Network Manager is configuring the network and short of ditching Network Manager I can see no solution.The issue : Getting a machine to update its machine name in the DNS serverSounds simple doesn't it I operate a FreeBSD based firewall / DHCP / DNS server, using a default Network Manager DHCP configuration the Fedora clients do not register their names with the DNS server when they obtain an address.
I have traced the communications with Wireshark and the Fedora clients are NOT supplying the PC's hostname as part of the exchange so this is NOT a DNS server configuration issue. If I uncheck the option 'Automatically obtain DNS information from provider' under the DHCP settings the Fedora clients DO register the hostname that is put into the Hostname (optional) databox. They do NOT however store the DNS server IP address or any other records defined by the DNS server.
Is there some hidden settings or is this a bug because it isn't acceptable 'DHCP' behaviour if it isn't possible to automatically set DNS server IP addresses and at the same time register the hostname during the DHCP negotiation. Before it is said I know I can use a fixed DNS IP address but am not prepared to long term, I am also not prepared to define the Fedora clients with a 'static' IP. I am similarly not interested in playing around with scripts or any other such 'frigs' to achieve what should be a standard activity - registering a host with DNS during the DHCP negotiation.
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Dec 8, 2010
I have been trying to SCP a couple files from my Ubuntu 10.10 machine to a Fedora 12 machine. Before today, did it with out any problems, always worked. Today however; after the SCP is complete from my machine, the file on the other machine is zero bytes, an empty file. The only thing I can remember getting changed was the new kernel that was in the update I did today. But I don't think that would have changed the SCP works.
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Jul 23, 2010
I want to make my machine to PXE boot windows from another machine having RHEL5.2. I know the procedure to PXE boot linux, but I want to know is it possible to PXE boot your client machine with windows XP.
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Dec 22, 2010
i have harddrive on which raid 5 is configure and no file system is configured.so i want to access the data on auto raid component harddisk.could any one telme how to access auto raid component hard drive.when im connectingto my laptop its not opening.when i check in disk analyzer its showing auto raid component harddrive.please helpme to access data inside the raid drive.
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