I'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 Most of the material I come across is out of date; command-line centric or full of incomprehensible jargon.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 RepliesI want to start learning GUI bash scripting but I can't find the right tutorial. I'm interesting at creating menus like ex. IPTRAF or MC (midnight commander) but all i find is tutorials for KDE & GNOME. The idea is that I want to create programs that don't need X sessions.
View 2 Replies View RelatedI need to open a telnet session using a shell script that follows this format:
telnet 10.100.0.1
expect "Password:"
send <password>
[code]....
send "pen" (till the end of lines generated as in |more.... usually we use like 8 space bar buttons after "pen" to generate all)
and I want to redirect the whole generated result of "pen" to results.
I've done a bit of googling, but can't find a clear answer on this. If I format a USB drive using NTFS, so I can store copies of files from my Win 7 machine and my Lucid machine, will it work.
View 9 Replies View Relatedcould't find anywhere on how to clear all IPs in Darkstat,anyone knows?
View 1 Replies View RelatedWant to run some cmds on Marc Greis Tutorial but always gets an error msg- "can't find ns: no such command. How can I resolve it? Also do not know how to edit on the terminal Have to start afresh anytime I notice a mistake. How can I successfully run a file to get a result. Have not been able to reproduce the result in Marc Greis tutorials.
View 5 Replies View RelatedKubuntu 10.04 x86. I've got a working triple monitor arrangement, separate X displays tied together via xinerama, which is all well and good (within the limits of xinerama, anyway; I long for the day when spanning desktop space, multiple monitors on multiple adapters, and X compositing can all live in harmony...) except for how KDE handles widgets. Love KDE, haven't had a second thought since switching from Gnome earlier this year, except for this one reach-for-the-shotgun issue.I like to have whatever I'm working on presently on my center monitor, my e-mail open on my right monitor, and various apps (torrent client, IM client, and a sort of 'status display' of arranged desktop widgets) on the left. KDE, on the other hand, does not like things this way.
KDE, it appears, has pretensions at being a GUI designer; it won't let me arrange widgets on my desktop the way I want to position them. If I put one in the top left corner, it'll snap into place. OK, fine; if I put another widget right below that first one, it automatically indents both of them, usually one in further than the other. Adding additional widgets to the arrangement usually but not always causes KDE to keep indenting - it's not stair-step bad, but it's obvious things don't line up which makes it visually distracting. It seemingly-randomly decides that I can't put a widget in a particular location on the screen and snaps it back to the size and location it was in when it first appeared on the screen (or before I moved it, if it was already there). It's not an overlap-detection problem; sometimes it's perfectly OK with me overlapping widgets, sometimes it won't even allow widgets to be within some apparently-randomly-chosen number of pixels of one or more of the widgets already on-screen. Sometimes it'll regard an aligned cluster of widgets as a single entity and snap to edges... with no rhyme or reason as to which clusters and which edges. When working with widgets in close proximity to each other, the 'edge-bars' that contain the buttons with which one can drag and manipulate the widgets; again, with little-to-no discernible pattern, sometimes they appear over the widget next to it, sometimes underneath the widget next to it (making the edge-bar completely useless), sometimes clicking the widget brings its edge-bar to the foreground, sometimes the widget needs to be dragged to a different part of the desktop or a different monitor then re-positioned in the cluster for the edge-bar to be in the foreground, sometimes the widget has to be removed and re-added to get the edge-bar into the foreground. When I rebooted just now, my widgets were randomly scattered across the desktop, despite having had "Lock Widgets" turned on throughout (since a few days ago, actually; the last time I had to re-re-re-rearrange things).Basically, from what I can tell from several months of observation, KDE has some sort of automatic widget arranging 'feature' which a) doesn't work properly and b) has no bloody off switch. All this makes what should be the simple, five-minute task of resizing and lining up some widgets by hand into an hour-long test of the elasticity of my vascular system. I'm fine with there being new or experimental or even buggy features in my GUI... so long as I can turn them off when I need to.
I've done the requisite googling and have come up empty. I've looked everywhere in the GUI I can think of, but no luck. I don't yet know enough about KDE to know where to look in the conf files to hack around it by hand. Could someone please tell me how to dike out or simply turn off this blitheringly-stupid widget auto-positioning drunken &*#^$*@#%$^&% wart so that I, the human, can put things where I want them on the screen?It's also baffling that I can only resize a Plasma widget up and away from its edge-bar when most every other window in most every other environment I've ever seen, including KDE, will let you resize by dragging any border in any direction. Big. Step. Backward. If anybody knows a way to fix this I would be most interested in hearing it, but I'll make do if given a way to turn off what I've come to think of as KDE's "layout critic mode".
i come from ubuntu installation and i have had opensuse before and i remember installing any of thede two without any problem on any of many harddisk arrangement. but thge ltest opensuse 11.3 doesnt pllay nice with my windows and ubuntu installation booting. i reember using boot loader in yast and it used to load the coorect setting from scratch. but now when i chose "propose new configuration" and it founds opensuse and three other windows!
[Code]...
I'm very very tired, worked all night long, and I did't sleep for hours... So I'm like a zombie now... half awake, and half asleep.
I was trying to clear a directory. Then I run the command cd to enter the directory, and then before thinking I run this dangerous command. on my Linux server: "find / -mtime +1 -exec rm {} ;"
I got a lot of:
Could this command have deleted something inside these directories? I'm afraid that the next reboot the server won't startup...
Could 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.
I 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.
I 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.
How to find whether raid is implemented or not ,without asking Linux Admin.
View 4 Replies View RelatedIs there a way to find the raid type without restarting the machine?
I m using linux operating system.
I 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?
I 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]....
The 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?
Can someone recommend a good c++ tutorial? I'm not a n00b but i'd prefer something that is directed toward people who have absolutely no experience with coding. code...
View 1 Replies View Relatedany tutorial which helps in boosting system speed by recompiling the kernel
View 9 Replies View RelatedI already figured out the basics of gtk2-perl, but i can't find a good tutorial for things like lists, scrolling viewports, drag n' drop, etc.
I guess any programming language is OK because it shouldn't be hard to translate it into Perl.
I am looking for guides and tutorials on stetting up Ubuntu as a home server. Not so much web server oriented, but more for video/music streaming, torrent download, backups, VPN, remote desktop, etc.
View 3 Replies View RelatedI've spent some time trying to get my 3G card connection shared over WIFI and despite the number of sites out there I had a lot of problems putting it all together. So I wrote a small guide about it, but due to several issues (time/bandwidth) I can't retest it from scratch.I was wondering if someone could take a look at it and make suggestions or corrections.The idea is to take your 3G data card and turn your WIFI into an access point so you can connect other devices to it for internet access.
View 6 Replies View RelatedFor compatibility reasons, a developer do not always need the newest software version that just poped up on the market.
In my case, right now, the WebDriver Test our Selenium Test framework doesn't work on Firefox5 that i automatically got thanks the Ubuntu Update manager. I had to search few hours on Internet and finally ask a more experimented college which told me about this solution:
first of all, uninstall firefox5:
Code:
sudo aptitude purge firefox
then, you can list the available software versions : sudo apt-cache policy <software_name>
Code:
msauvette@msauvette:~$ sudo apt-cache policy firefox
firefox:
Installed: (none)
Candidate: 4.0+nobinonly-0ubuntu3
[code]....
Any recommendations on what Perl tutorial to use?
View 1 Replies View RelatedI installed KDE and tried to find some help/tutorial but I got following message. "There is no documentation available for /kdevelop/index.html."
View 1 Replies View RelatedDoes anyone knows about some good c++ tutorial ? I don't wanna something for absolute beginners,I need something for advanced topics, tips...Something you liked and helped you a lot I prefer Internet tutorials/e-books but "real" book should be good too.
View 5 Replies View RelatedAny good tutorial for libusb APIs..
View 3 Replies View RelatedIs there a tutorial on how to play PS1 roms without having to install WINE?
View 1 Replies View RelatedI am trying to remove the ability to login with password so, I follow the procedures I have found to generate a key, copy it on the server and after editing the sshd_conf file to set PasswordAuthentication to no, after I restart ssh, I find my self locked out of it....
View 5 Replies View Relatedneed help with the Positional Parameters. I don't understand its concept.If you could give some example or and explanation
View 2 Replies View Related