General :: Find Whether Raid Is Implemented Or Not?
Mar 9, 2010How to find whether raid is implemented or not ,without asking Linux Admin.
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Fedora :: RAID Be Implemented On A Single Hard Disk?
Mar 25, 2010Can RAID be implemented on a single hard disk ? If yes, plz give a link for it.
View 2 Replies View RelatedGeneral :: How Does Tee Command Implemented
Nov 4, 2010I am trying to understand how the tee command implemented.I need to use tee command in high speed logging application. where stdout and stderr has to be redirected to a file. here i am concerned about the performance. Is tee redirect the data character by character or by buffer?
View 1 Replies View RelatedGeneral :: Is CLOCK_MONOTONIC_RAW Implemented In Red Hat 7.2
Aug 5, 2010I tried defining CLOCK_MONOTONIC_RAW in the include file. The timer does not run correctly.I am looking for a timer that I can count on to get a time delta.In my /usr/include/bits/time.h I have CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID defined. I assume they are not based on the realtime clock (not changed when time is updated. All I really need is a way to determine delta time when running. mili-seconds would be great, 1/100th second is preferred, and 1/10th would be acceptable.
___( Original Post )___________________
"A tick, a tick, my kingdom for a tick."
Please have patience and read on. This is a rather convoluted situation.The company currently does (since 1994) a loop cycle based task execution process. They tasked me to run a particular task at a particular interval. This is where I found the loop process and how much time delta time there can be.I want to implement a time based version. Nothing really drastic, just call the task when the timer says so. I know how I want to do it, they just keep throwing roadblocks in the way.The latest one is "what if someone changes the time ?". I looked on the web and my research seems to indicate that if I use clock_gettime(CLOCK_REALTIME,&ts) that indeed delta time can be messed up if something tinkers with the time.
The other option is to use CLOCK_MONOTONIC_RAW instead of CLOCK_REALTIME. It is indicated that this can not be changed and would be good for this type of application. The problem is I don't know if it is implemented in the version the company distributes, Red Hat Linux Release 7.2 (Enigma). Anyone know anything about this?Again, the company distributes it's product that runs on Red Hat 7.2. They have many units in the field. I read on the web that 1) There is no tick and 2) Red Hat 6 has the CLOCK_MONOTONIC_RAW implemented. Well, I looked at /usr/include/bits/time.h and found CLOCK_REALTIME but not CLOCK_MONOTONIC_RAW.
General :: Find Which Raid Is Configured (without Restart)
Aug 30, 2010Is there a way to find the raid type without restarting the machine?
I m using linux operating system.
General :: How File Associations Management Implemented
Aug 22, 2011I'm curious how file association management is implemented in Linux. Where is the related information stored? How do I modify it (I'm interested in non-KDE-based ways; I know there's a system configuration page for that in KDE)?
View 2 Replies View RelatedGeneral :: Hard Drives Information / Can To Find RAID Level?
Apr 22, 2010I know my Linux Servers have RAID but I want to know
1. Can I find RAID level?
2. how to find Disk information...I mean if it's not possible to get RAID Can I get how many hard drives and the real size?
General :: Why Have Kernel NTFS Team Not Implemented Changes In Driver?
May 10, 2010A more comprehensive phrased question since I lost access to the other one.I would ask that the other one be deleted, not this one, as it should not have been migrated in the first place.There are currently two NTFS drivers available for Linux.
The NTFS driver included in the kernel, and the userspace NTFS-3G driver that makes use of FUSE.By all accounts, NTFS-3G works perfectly.My question then, is if the NTFS filesystem has been successfully reverse engineered, why have the kernel NTFS team not implemented the changes in their driver? At the moment it is still marked as experimental, and there is a good chance it will destroy your data.
General :: Migrate An Installed Ubuntu System From A Software Raid To A Hardware Raid?
Jun 29, 2011migrate an installed Ubuntu system from a software raid to a hardware raid on the same machine? how would you go about doing so?
View 1 Replies View RelatedFedora Installation :: 12 Won't Find RAID?
Nov 18, 2009I just tried to install Fedora 12 x_64 on a machine that is currently running Fedora 11 x_64. It's a new machine for use as a server and is running a Phenom II 4 core on a gigabyte M/B - 4GB RAM, onboard ATI graphics, an Adaptec 5405Z RAID Controller that is in the 16 lane PCIe slot, and 3 SSD SATA dives in a RAID 0.I installed Fedora 11 x_64 on this machine just last week and it went perfectly smooth. The install recognized the video hardware, controller card and the RAID, installed correctly, boots fine, runs solid.When I attempt to install Fedora 12 x_64 on the same machine, it does NOT recognize the controller, nor the RAID and doesn't seem to like the video hardware. I stuck on a floppy drive and made a driver disk from the Adaptec provided Linux drivers, but the install fails to mount the floppy when I try to add the driver during boot from DVD - although it tries. (It's possible that my floppy drive and/or disks are too old to be useful. Seriously, loading drivers from a FLOPPY? Most computers don't even HAVE one any more.Sheesh...). The video also seems squirrelly and works better using the "simple" video drivers.
Anyone got any clues on this. It seems odd that the newer version works less well than the previous one.Maybe I'll try a different .iso - CDs or a live version or something just to check - and maybe try an install on a different machine. Yes, I put the install DVD through the self-test and it passed. I have tried 2 different copies and both fail.LATER - tried with live CD - boots OK, splash screen is OK, after bootup finishes it looks like maybe it's trying to start a different video driver - then the screen goes black and stays that way. Tomorrow I may stick in a discrete video card and see if that makes any difference.
Still Later: I have tried discrete video card, tried moving the RAID controller to the 4 lane slot, tried to install a driver from floppy (still no go) and have tried noprobe on boot command line. Although the "noprobe" got the video to keep going (albeit at a low resolution) it STILL refuses to see the RAID controller. The LED indicators on the RAID card SEEM to be indicating that the card locks up during Fedora 12 boot, but I haven't checked on that just yet. Fedora 11 continues to boot and run fine on the same machine - I'm running it right now. as I type this.Later yet: Ubuntu 9.10 86_64 that was released a couple weeks ago DOES, IN FACT see the controller and the RAID when I run the install process. Looks like Fedora 12 is badly broken after all. (Damn those even numbered releases anyway.....{;>D)=) Guess I'm going to be "stuck" with either Ubuntu or Fedora 11 unless a solution appears pretty soon. I have sent an inquiry to Adaptec, but I'm guessing they are going to say, "we don't support Fedora linux except Fedora 5 and Fedora 6" as those are the only drivers they seem to have available
Friday 11/20 - I've attached a SATA drive to the same computer. By using the "basic" video driver from the install DVD I am able to install F12 to the SATA drive without issue - it installs fine, boots fine, runs fine. However, it still will NOT see the RAID controller. I tried installing the driver .rpm from the disk that came from Adaptec, but the vanilla linux driver doesn't seem to be effective. So far, Fedora 12 continues to be a big FAIL! as far as this particular machine goes.
Ubuntu Servers :: RAID-5 Recovery (spare/active) / Degraded And Can't Create Raid ,auto Stop Raid [md1]?
Feb 1, 2011Could any RAID gurus kindly assist me on the following RAID-5 issue?I have an mdadm-created RAID5 array consisting of 4 discs. One of the discs was dropping out, so I decided to replace it. Somehow, this went terribly wrong and I succeeded in marking two of the drives as faulty, and the re-adding them as spare.
Now the array is (logically) no longer able to start:
mdadm: Not enough devices to start the array.Degraded and can't create RAID ,auto stop RAID [md1]
I was able to examine the disks though:
Code:
root@127.0.0.1:/etc# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 00.90.00
code....
Code:
mdadm --create --assume-clean --level=5 --raid-devices=4 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2
As I don't want to ruin the maybe small chance I have left to rescue my data, I would like to hear the input of this wise community.
Software :: How Do New Unicode Characters Get Implemented?
Apr 17, 2009From time to time, new characters are added to the unicode standard.For instance, in 2008 a capital sharp s (upper case form of German eszett)was added at position 0x1e9e.What actions need to be taken in order to make the new character part of the various fonts we use on our desktops?
View 1 Replies View RelatedUbuntu Installation :: 10.04 Installer Cannot Find Sata 6.0 Raid
Sep 9, 2010I went to install Ubuntu 10.04 on my home pc last night but I couldn't. The installers could not see my raid and even though I wished to install to a seperate HDD windows is installed to my raid. The windows MBR always overtook the Grub and whenever I start grub up it cannot find an OS or Kernel.
I have got an ASUS Rampage 3 Extreme [URL] and on it there are two 6.0 sata Marvell connectors: [URL]
In these two Marvell connectors are two WD velociraptor 10,00 rpm Raid 0 drives. On these two drives is installed Windows 7. The ubuntu installer cannot seem to see the raid pair and so does not install Grub correctly.
Ubuntu :: Playing DVDs - No URI Handler Implemented
Apr 17, 2010Ubunto is new to me when I try to play a movie I get the message, "no URI handler implemented for dvd".
View 1 Replies View RelatedFedora Networking :: Unable To Get Printer Status (Not Implemented)
Nov 15, 2010I can print very well over a USB cable, however I'm having trouble printing over the Internet (F13). The errors that I get are:
job-printer-state-message Unable to get printer status (Not Implemented!)
job-printer-state-reasons [u'none']
Printer status usually shows up as OK until I actually start to print and then I end up with an error message and nothing prints. This seems to show up with any type of printer connected to the internet.
Ubuntu Networking :: Shorewall Implemented In Scripts With IP Aliases
Aug 17, 2010let me show you my config and tell me if its ok
Its pretty simple:
eth2 -> 192.168.1.0
eth2:0 ->192.168.50.0
eth1 and eth0 are the net interfaces, 1 router each to provide wan failover (not implemented here)
Hosts:
loc1 eth2:192.168.1.0/24
loc50 eth2:192.168.50.0/24
Interfaces
net6 eth0 detect
net7 eth1 detect
- eth2 192.168.1.255,192.168.50.255
Masq
eth0 eth2
eth1 eth2
eth2 eth2
Policy
all all ACCEPT info
Rules
SECTION NEW
REJECT loc50 loc1 all
Zones
fw firewall
net6 ipv4
net7 ipv4
loc1 ipv4
loc50 ipv4
Problems / Doubs:
1) Is the hosts file required?
2) I guess I need doing masq from local to each external, and also from local to local even if they share the same interface, hence the eth2 eth2 in the masq file...
3) So is shorewall well implemented in these scripts to handle aliases?
Fedora :: F14 - Very Annoyed With Software RAID Setup - Cannot Find Superblock At Reboot?
Nov 20, 2010I recently upgrade to Fedora 14 from 13. It was an in-place upgrade. I can't recall for sure, but I do believe I had these problems in F13 before the upgrade. The F13 install was from a Live CD. Anyway, I have a three drive RAID 5 array setup - 3x 750GB. For some very annoying reason, each time I reboot my F14 system, it hangs with an error about not being able to find a superblock on /dev/md126 and /dev/md127. I have tried to stop and remove /dev/md126 and /dev/md127 but they always seem to come back. I have also noticed in the output of fdisk -l that drives sda and sdd like to swap places sometimes for an unknown (to me) reason. Any other output that is needed, please ask. I recreated the array just yesterday with:
Code:
mdadm --create --verbose /dev/md0 --level=5 --raid-devices=3 /dev/sdb1 /dev/sdc1 /dev/sdd1
I would cat mdadm.conf in /etc, but I removed it previously to try to figure out the problem and it was not
[code]....
OpenSUSE Install :: Graphical Login Not Implemented In Build Live Cd?
Aug 17, 2010I am now at my 6th version of my opensuse build and I can't get it to start the graphical login.I am trying my build out on a VirtualBox using the live cd.This is what happens during installation :It will install properly. No error messages at all. I get the (graphical) options screen to select language and screen resolution settings, so far so good.I select the default (top) installation for my opensuse and hit enter.Then I will get the verbose progress and when it's finished, the verbose will ask me for my user name and password.Then I enter those correctly and the verbose will tell me to enjoy.I am then left with a blinking cursor, and don't know what to do next.
This is not what should have happened since in my build I had selected Configuration > Startup > Default runlevel > 5: Graphical loginI can find no reason for this failure since on my Windows system I have tried out several other Linux systems in the same way and never experienced this problem before.During the assembling of my packages I have payed close attention to select all packages required for a graphical login.An other problem is that although I selected the default language for my build to be Dutch, the default language during setup is still English.I hope there is someone who would be kind enough to be prepared to help me out, I am so eager to start trying out my self made OS.
Hardware :: Amd SB750 Raid And 12 Install - Unable To Find Any Suitable Storage Devices
Apr 17, 2010The intention is to have this system dual-boot. When i first put it together, i decided to setup a raid5 array spanning 3 sata drives. I installed Windows 7 first, decided i'd get to Linux later. I left 150mb or so at the beginning of the array for /boot, and about 200gb at the end for my linux install. i'm getting to the linux install. My distro of choice is Fedora 12. I start the setup, and at the point where it's time to partition, the installer tells me that its unable to find any suitable storage devices.
I Crtl-Alt-F2 to a console, and fdisk -l. Fdisk reports three individual drives which all have partitions already. All have free space. None make sense. So i turned to google, and found some threads which explain that this chip doesn't run a true raid, rather its what's been referred to as fake raid. Which is that it depends on the windows driver in order to actually present the array to the OS, and that the best way to get by that on linux, is to break the array, and use LVM instead.
That's all well and good, but i lose two things in doing that. First i lose the resiliency of raid 5, and second, well, what does that do to my windows install? I've considered moving all of my data from windows to other machines, and then just starting from scratch, but i'd really much prefer a method of using the chips fake raid in linux. Is there a driver, or module which i can install to make this happen?
Ubuntu :: Find A "clear" Tutorial On How To Set Up A RAID 1 Arrangement
Feb 21, 2011I'm trying to find a "clear" tutorial on how to set up a RAID 1 arrangement. Most of the material I come across is out of date; command-line centric or full of incomprehensible jargon. Can someone point me to a good clear and logical tutorial on setting up raid 1 that applies to a desktop computer running 10.10.
View 2 Replies View RelatedNetworking :: Share The Implemented "c" Program For Scanning The Available Wireless Network
Feb 17, 2011share the implemented "c" program for scanning the available wireless network.
View 2 Replies View RelatedUbuntu Multimedia :: "No URI Handler Implemented" Dvd Error
Jan 28, 2010my computer doesn't get the internet, so I've tried to download what earlier threads write as the solution on another computer, but the other computer isn't linux, and it says that it doesn't recognize the file extension. Is there any way to download the "ubuntu-restricted-extras" thingy without it immediately trying to install?
(I have ubuntu 9.1, on a thinkpad t22(i think))
Programming :: When Insmodding Get A "function Not Implemented" Message?
Apr 13, 2011I have built a module to load it on a UML instance running a different kernel from the one I'm running on the host host. I have built the module against the headers for the kernel I'm using on the guest but when I try to insmod the module (on the guest, of course), I get a "function not implemented" message.Can insmod be a little more verbose about the function that is not implemented? I tried running strace on the insmod but the error comes from init_module so not much more information is available:
Code:
open("r5r.ko", O_RDONLY) = 3
read(3,
[code]...
Server :: OpenVPN Access Server Error: 501 Not Implemented
Apr 12, 2011We're setting up an OpenVPN access server, a quite straight-forward and very customizable system. Only we have a problem, I guess caused by Apache, when we try to reach the client web server via a custom port (see screenshot in attachement) we get the following error: Code: 501 Not Implemented. The requested method is not implemented by this server. Although we have added on the cisco router a port forwarding for port number 9943. It is working when we access the website : port with the local IP address [URL]...
View 2 Replies View RelatedUbuntu :: Mdadm Raid + GRUB = Not Booting - Error: Unsupported RAID Version: 0.91
Jul 18, 2011I have a raid5 on 10 disk, 750gb and it have worked fine with grub for a long time with ubuntu 10.04 lts. A couple of days ago I added a disk to the raid, growd it and then resized it.. BUT, I started the resize-process on a terminal on another computer, and after some time my girlfriend powered down that computer!
So the resize process cancelled in the middle and i couldn't acess any of the HDDs so I rebooted the server.
Now the problem, the system is not booting up, simple black with a blinking line. Used a rescue CD to boot it up, finised the resize-process and the raid seems to be working fine so I tried to boot normal again. Same problem. Rescue cd, updated grub, got several errors: error: unsupported RAID version: 0.91. I have tried to purge grub, grub-pc, grub commmon, removed /boot/grub and installed grub again. Same problem.
I have tried to erased mbr (# dd if=/dev/null of=/dev/sdX bs=446 count=1) on sda (ide disk, system), sdb (sata, new raid disk). Same problem. Removed and reinstalled ubuntu 11.04 and is now getting error: no such device: (hdd id). Again tried to reinstall grub on both sda and sdb, no luck. update-grub is still generating error about raid id 0.91 and is back on a blinking line on normal boot. When you'r resizeing a raid MDADM changed the ID from 0.90 to 0.91 to prevent something that happend happened. But since I have completed the resize-process MDADM have indeed changed the ID back to 0.90 on all disks.
I have also tried to follow a howto on a similar problem with a patch on [URL] But I cant compile, various error about dpkg. So my problem is, I cant get grub to work. It just gives me a blinking line and unsupported RAID version: 0.91.
Server :: How Long Does Hardware Raid Card (raid 1) Take To Mirror 1 TB Drive (500gb Used)
Mar 22, 2011How long does hardware Raid card (raid 1, 2 drives)take to mirror a 1 TB drive (500gb used)?Is there a general rule of thumb for this?4 hours? 12 hours? 24 hours?
View 1 Replies View RelatedCentOS 5 Hardware :: Connect A RAID Box To The Server Via LSI 8880EM2 RAID Controller
Aug 3, 2010I am trying to connect a RAID Box to the server via LSI 8880EM2 RAID controller.The raid box is FUjitsu Externus DX60 with raid 1 configured.The server is Fujitsu Primergy SX300 S5 with LSI 8880EM2 RAID card.The external raid box is being recognised by the raid controllers bios.
The server runs CentOS 5.5 64bit. I have installed the megaraid_sas driver from LSI website and MegaCLI utility but CentOS still fails to see the box.MegaCLI utility, when launched from CentOS, recognises the raid box, CentOS does not(no mapping being created in /dev).
I have also tried to create a logical RAID0 HDD on one physical HDD(as seen by MegaCLI) with MegaCLI utility in CentOS.The result was success and the new logical drive could have been used, but when restarting the server, the controllers' bios fails with an error (not surprised(one logical RAID0 on one physical HDD)) and configuration is being erased.
Has anyone tried connecting 8880EM2 controller to a raid box with raid configured on the box, running it all under CentOS and what were the results.
Ubuntu Installation :: Dual Boot - Win 7 And 10.10 On Raid 0 - No Raid Detect
Nov 26, 2010I have installed Ubuntu on my m1530 since 8.04 and currently dual boot Win7 and 10.10. I would like to dual boot on my PC, but I have run into a problem. I am not a pro at Ubuntu, but this problem I can not solve by reading forums like I have in the past.
I realize this is a common problem, but I have noticed people having success.
I have a M4A87TD EVO MB with two Seagate drives in Raid 0. (The raid controller is a SB850 on that MB) I use the raid utility to create the raid drive that Windows7x64 uses. I have 2 partitions and 1 unused space. Partition 1 is Windows, partition 2 is for media, and the remaining unused space is for Ubuntu.
I am running ubuntu-10.10-desktop-amd64 off a Cruzer 16GB flash drive that was installed via Universal-USB-Installer-1.8.1.4.
My problem like so many others is that when I load into Ubuntu, gparted detects two separate hard drives instead of the raid. I read that this is because kpartx is not installed on 10.10. I then went in LiveCD mode and downloaded kpartx from Synaptic Manager. Gparted still reported two drives. I opened terminal and run a few commands with kpartx. I received an error. (Forgive me I didn't write it down, but I believe it said something about a communication error. I will try again later and see.)
Currently I am reflashing the Cruzer with a persistence of 4GB. I am not familiar with this process, but I understand that my LiveCD boot will save information I download to it. I decided to try this method because I was going to install kpartx and reboot to see if this made a difference.
I am looking for any suggestions on a different method or perhaps someone to tell me that the raid controller or some hardware isn't supported. I did install ubuntu-10.10-alternate-amd64 on my flash drive, but fail to get past detecting my CD-ROM drive since it's not plugged in. If this method is viable, I will plug it in. I also watched the ..... video were a guy creates Raid 0 with the alternated CD, but it wasn't a dual boot and didn't use a raid controller from a MB.
General :: Find Mechanism With Irregular Expression (find Command) Or Perl?
Sep 7, 2010I have 4 Linux machines with cluster.My target is to find all kind of IP address (xxx.xxx.xxx.xxx) in every file in the linux system remark: need to scan each file in the linux system and verify if the file include IP address if yes need to print the IP as the following
more /etc/inet/file.example1
182.23.2.4
255.255.0.0
10.10.1.1
Hardware :: RAID - Create RAID 1 Without Deleting Data?
Jul 18, 2009how can I create RAID 1+0 using two drives (one is with data and second one is new). Is it possible to synchronize data drive with empty drive and create RAID 1+0 ?
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