CentOS 5 :: Discover Unrecognized Devices ?
Oct 13, 2010How can I discover unrecognized devices on centOS? what is the command ?
View 2 RepliesHow can I discover unrecognized devices on centOS? what is the command ?
View 2 RepliesSince some days ago, my external usb BenQ DVD R/W become unrecognizable by CentOS. It was recognized before.
During those days, I updated software packages, and later reinstall the whole system. I cannot remember the time point that the problem began to happen. Yestoday, my kernel version was still 2.6.18-164.10.1.el5, when I enter single user mode through Quote:(exit gnome) $ init 1
I'm working on a server and noticed that the to RAID5 setup is showing 4 Raid devices but only 3 Total devices. It's on a fully updated CentOS 5 system that only has three SATA drives, as it can not hold anymore. I've done some researching but am unable to remove the fourth device, which is listed as removed. The full output of `mdadm -D /dev/md2` can be see below. I've never run into this situation before.Anyone have any pointers on how I can reduced the Raid Devices from 4 to 3? I have tried
mdadm /dev/md2 -r failed
mdadm /dev/md2 -r detached
but neither work and since there is no block device listed I'm not quite sure how to get things back in sync so it's only seeing the three drives.
/dev/md2:
Version : 0.90
Creation Time : Tue May 25 11:07:04 2010
Raid Level : raid5
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After upgrading from 2.6.18-194.32.1.el5 to 2.6.18-238.5.1.el5 EXT3-fs: Unrecognized mount option "mand" or missing value
View 1 Replies View RelatedI'm setting up a raid 5 on several hard disks with a layer of lvm on top for good measure.I know the recent kernels support growing software raid, but since centos runs 2.6.18, I wanted to make sure it'll work. Does the centos kernel support growing raid devices?
View 1 Replies View Relatedi need to discover all network nodes and their ips is their a way to do it, then if i need to discover certain nodes which runs certain program. I'm using Fedora14 and FreeBSD
View 2 Replies View RelatedSome times ago I used multimedia.org. Now, I don't use them anymore. But some packages were installed from theirs source, for example yesterday I discovered old flashplayer-mozilla... Now I want to know, which of my packages are from multimedia.org repository. How to check this one? Any dpkg or apt magical command?
View 14 Replies View RelatedIt's been a while, I haven't used Linux since version 6 or 7, and at that time, Anaconda gave you a choice of which level of SELinux to install - as I remember, I chose the "relaxed" version... but this time, with Version 11, I was not given any choice of which level of SELinux to use. I was automatically forced into a USER (drone) account with no administrative or limited administrative capabilities. I have my administrative name and password I assigned during the Anaconda install...but I don't know how to get into the superuser or root account and execute it so that I have full, unvarnished permission to do as I please on MY machine.
First of all, let me explain - This is MY computer and I can do with it exactly as I want. I am the Aministrator and I am the one and only OWNER of this machine. Therefore, I should have automatic access to SuperUser, and if I corrupt something, that is my fault...and its my machine. Cutting through the bull, I would like someone on here to just plain tell me, without cryptic remarks, to give me a step-by-step - The is a HOW TO to access the superuser account, name and password. And - this is HOW TO create a ROOT account with superuser permissions. What I need is a one-two-three this-is-how-to-do-it.
If I mess things up, I merely reinstall Fedora again and start from scratch. I don't care if I screw things up accidentally. What does irritate me is being forced to have a "drone" account on my machine that I own, without even asking me, what I wanted..
I have KDE in openSUSE 11.3 64 bit and an ATI Mobility Radeon HD 4300 Series video card
and these drivers:
Driver: "radeon"
Driver Modules: "drm"
XFree86 v4 Server Module: radeonhd
I suspect it's caught in low res colour. How do I find what resolution color I'm running, and how do I adjust it if it is low?
Can a virus survive a reformat, running bootrec /fixmbr (both from the install CD), and then installing Ubuntu? Reformat meaning from the windows disk recovery console, using the format command for all partitions. Likewise, would a virus be capable of surviving just the first two steps alone without installing Ubuntu, just re-installing windows?
If one were to have an MBR virus on Windows or Linux, how abouts would you find or remove it without doing an entire disk wipe? And before someone goes "Linux is immune" take into consideration vulnerabilities on the user end.
I installed Ubuntu 11.04 Desktop and can access the internet through a linksys router with WPA2. I then installed Ubuntu server in the free space left on the disk, but the installation network autoconfiguration failed. I can boot either OS, but the server's DHCP client cannot discover any networks (there are several in the area).
View 3 Replies View Relatedif I'm connected to one of VOIP Providers using a VPN connection to this provider, how the government will know that I'm doing such this issue ? how can I mis-track that activity ?
View 1 Replies View RelatedBecause, I use a Thinkpad R61, I decided to see who did it as well and I got some results right away: Using Slackware 13 64 bit [URL] Followed into these links and followed them to my best ability:
[URL]
Code:
bash-3.1# modprobe mac80211
bash-3.1# ifconfig wlan0 up
bash-3.1# iwlist wlan0 scan
wlan0 Scan completed :
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I am trying to do 1Meg IO to one of the block devices but I can only get a maximum of 512K IO size. I can use the corresponding sg device to get 1Meg of IO. I was wondering if anyone knows why 1Meg IO to a block device is being broken down into 2 512K chunks? I have increased the /sys/block/sdg/queue/max_sectors_kb to 16384, but it has made no difference.
My uname is : Linux virgo 2.6.18-128.el5 #1 SMP Wed Jan 21 10:41:14 EST 2009 x86_64 x86_64 x86_64 GNU/Linux
I have created a number of network block devices that I would like to delete, but I have been unable to find any information to do this.
I am using Centos 5.6 and my kernel is 2.6.18-238.el5.
I have been searching the internet for two days now and have noticed some other UNIX systems do have utilities for deleting unwanted devices but nothing for linux.
I created these devices with the vmware supplied PERL script vmware-mount.pl which in turn calls mknod.
The commands would look like:
mknod /dev/nbd0 b 43 0
mknod /dev/nbd1 b 43 1
......
I have tried deleting them from /dev which works temporarily but they come back when I reload the nbd module i.e.
modprobe -r nbd
modprobe nbd
and also if I reboot.
There is a directory tree for each device under /sys/block and I'm guessing this is how /dev is getting repopulated. I cannot remove the directory trees from /sys/block. I get this when I try:
rm: cannot remove `nbd15/queue/iosched/slice_idle': Operation not permitted
rm: cannot remove `nbd15/queue/iosched/slice_async_rq': Operation not permitted
...... there are 25 lines like this ....
When I do a vgsan I see this:Reading all physical volumes. This may take a while...
/dev/nbd0: read failed after 0 of 4096 at 0: Input/output error
/dev/nbd0: read failed after 0 of 4096 at 2199022141440: Input/output error
and in the messages log I see this:
Aug 15 21:04:06 udon-desktop kernel: nbd15: Attempted send on closed socket
Aug 15 21:04:06 udon-desktop kernel: end_request: I/O error, dev nbd15, sector 0
Right now I have this error
On my top right hand corner. No network devices available.
My distro is Centos 5.3
I have an issue with Hard Drives in GNU/Linux CentOS 5.3I installed linux 5.3 frash copy to new SATA MAXTOR 1000GB Hdd.And see the partitions is SATA MAXTOR 1000GB (NEW INSTALLATION CentOS 5.3)
/dev/sda1 Boot
/dev/sda3 /
(/dev/sda2 is the SWAP)
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I`ve boot my laptop by centos. then my devices cant be found.
View 1 Replies View RelatedWhat is the best way of specifying the names of ethernet devices in CentOS5.5 or later? There seems to be at least two ways of doing this: Would the 60_net.rule file override a 010_netinterfaces.rules file because it gets executed later, or would the 010_ net interfaces. rule file set up the info in /sys which would then be used by 60_net.rule?
View 2 Replies View RelatedI have a minor issue with permissions. There are a couple of devices that I need r/w access to in /dev. Whenever I first boot up and log in as end user (not root) and I need to access the devices permission is denied. Logging in as root there's no problem accessing these devices. However as an end user every time I need the devices I have to first su to root to change R/W permissions (chmod 666).
Now, the good thing is that the permissions stick even as I logout and then log back in, but as soon as I reboot my computer (every night) I have to go and chmod manually. I'm trying to find a way to avoid having to su and chmod manually but I'm not having much luck. The devices I am trying to access are /dev/ttyS1 and /dev/windrvr6, when I first boot up and login as end user the permissions look as follows:
crw-rw---- 1 root uucp 4, 65 May 27 04:11 /dev/ttyS1
crw-r--r-- 1 root root 253, 0 May 27 09:12 /dev/windrvr6
Booting to CentOS 5.5 works and I am able to login with all my devices mounted. When I boot from the install DVD and type "linux rescue" I eventually get the message, after attempting to have one of the screens mount my partitions in read/write mode:
"An error occurred trying to mount some or all of your system. Some of it may be mounted under /mnt/sysimage." But nothing appears mounted under /mnt/sysimage. Should I try mounting my CentOS 5.5 partitions manually at this point ?
I installl centos in my pc after i install, i cant surf the net,showing no devices for network
View 1 Replies View RelatedAt work, I have a laptop configured with CentOS 5.5 that we will be using to run latency tests on two different mobile networks. To do so, we have two Novatel USB HSPA+ wireless modems connected, and configured using wvdial. The problem we are having right now is, wvdial is configured using the path to the modem to connect (/dev/ttyUSB0 for Network#1 and ttyUSB5 for Network#2), which only works if we insert the modems in the right order. I've tried alot of udev rules and what not to try and hard code the device names to something like /dev/modem_network1 and /dev/modem_network2, but that doesn't seem to work.
So at this point I'm trying to take a step back and a fresh look at the problem. Can anyone give me any information regarding where I should begin to get this done?
pairing bluetooth devices on Centos? I'm trying to pair a phone (Nokia 6086) with a bluetooth dongle. I've been able to do it on Ubuntu (using the bluetooth applet), but so far no luck connecting it to a Centos machine. Steps I have taken so far:
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I have a fairly simple iSCSI setup using two devices, but they have swapped names on different machines. running CentOs 5.3 ia64, and using iscsi-initiator-utils-6.2.0.868-0.18.el5
vm1:
[root@vm1 ~]# fdisk -l
Disk /dev/xvda: 4194 MB, 4194304000 bytes
255 heads, 63 sectors/track, 509 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
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Any way to get iSCSI to mount the devices as consistent device names ?
when i want to install centos 5.5 i take this error:
An error occurred - no valid devices werefound on which to crate new file systems.
my hardware specification is:
motherboard: gigabyte p55a-ud3
ram: ddr3 crucial 4gb
cpu: corei5 750
hdd: 2X1TB wd black edition raid1
Anyone else SUDDENLY getting this??? Still trying to find why this is happening...
Code:
FFmpeg version 0.6.2-rpmfusion, Copyright (c) 2000-2010 the FFmpeg developers
built on Apr 12 2011 16:45:34 with gcc 4.5.1 20100924 (Red Hat 4.5.1-4)
configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64
--mandir=/usr/share/man --arch=x86_64 --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
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After a couple of months of not using the dektop it warned me to check/correct some issue with the HDD, which I did. After the steps taken by the system to check the disk it went to the sign-in screen for ubuntu but it no longer recognize my password, so can't use it.
I remember that at the time when I was installing the OS it gave me a long list of alphanumeric characters which I would need in case of login problems in the future but I can't find where I wrote that string of chrs.. I deal with this issue by using the livecd from where I installed the OS or I do indeed need that string?
Important notes
1) Ubuntu 10.04 LTS
2) Plenty of free hard disk space
3) Properly partitioned disk
4) Recognized partitions at startup
5) Never before any issue/error of this sort
HP Pavillion hdd crashed in my daughters computer so I removed it and purchased a 2.5 USB 2.0 IDE Drive Enclosure and connected it to my laptop Asus Eeee running Ubuntu 9.10. I need to get access to the files on the external hdd and nothing seems to recognize except Palimpsest says:
Hard Disk 811 ATA/ATAPI Device
Unknown Size
Unrecognized
Smart Not Available
/dev/sdb
When I open a terminal and run:
rhg@rhg-laptop:~$ sudo parted /dev/sdb
rhg@rhg-laptop:~$ sudo gpart /dev/sdb
Floating point exception
rhg@rhg-laptop:~$
When I run Test Disk:
Test Disk 6.11, Data Recovery Utility, April 2009
Christophe GRENIER <grenier@cgsecurity.org>
[URL]
Select a media (use Arrow keys, then press Enter):
Disk /dev/sda - 160 GB / 149 GiB - ATA ST9160310AS
It only recognizes the hdd in my Asus. So if the Ubuntu Disk utility can see the drive how to I get these tools to see it? I know for a fact the OS on the external hdd is Ubuntu 9.04 ext3 because I set this system up for my daughter. The gpu chip melted onto her HP motherboard and crashed her system. Now to add more excitement to this puzzle, the external hdd does have the Captain Hook and the Aligator loud Tick Tock sound when you first plug it in so the hdd is not the healthiest either.
I've already installed centos 5.5 and checked the xinetd services using the command : service xinetd status and the reply is xinetd: unrecognized service.
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