Ubuntu Servers :: Udevadm Trigger Is Not Permitted While Udev Is Unconfigured
Aug 27, 2011
I'm having a bit of a nightmare with my ubuntu hardy server (using hardware raid 1+0). Following a power cut I get the message "udevadm trigger is not permitted while udev is unconfigured" on boot. Before the power cut the server had been up for ~450 days.
I managed to get access to /boot (which was empty) by using the repair option on the alternate cd and mounting /dev/myserver/root. I've installed the packages linux-headers-server, linux-image-server and linux-server. The various 2.6.24-29 files were installed and update-initramfs was automatically run (I noticed others have used update-initramfs to solve this error when upgrading from 8.04 to 10.04 in some posts I've read). No luck with this though - just the same error booting. I've also tried reinstalling udev, but again with no success.
I rebooted and pressed the Esc key to get the boot menu up. Only options were for kernel 2.6.24-26 (rather than the 2.6.24-29 just installed). I ran the recovery option anyway and got "/dev/mapper/myserver-root does not exist".
I use Parallels 5 for Mac (10.6.4). I started my Ubuntu 10.4 virtual machine and it didn't load the Ubuntu Gnome desktop. In stead I did get a command line prompt. I could login with normal username and password, rebooted again, but same result.I tried to update the system with code...
I just performed an update thru the Update Manager, & on re-boot got this message: ( Ubuntu 10.04.1 LTS, kernel 2.6.32-24-386 ) udevadm trigger is not permitted while udev is unconfigured. Gave up waiting for root device. Common problems :
- Boot args ( cat /proc/cmdline ) - Check root delay= ( did the system wait long enough? ) - Check root= ( did the system wait for the right device? ) - missing modules ( cat /proc/modules; ls /dev )
ALERT! /dev/disk/by-uuid/df0200e3-e6e9-439a-922f-100d92af0c58 does not exist. Dropping to a shell!. BusyBox v1.13.3 (Ubuntu 1:1.13.3-1ubuntu11) built in shell (ash) (initramfs)_ Info: I can boot into older version: Ubuntu 10.04.1 LTS, kernel 2.6.32-23-386. The Update Manager does not seem to want to show any updates that are available.
I was updating the security updates in my deskptop. It did not executed successfully even after 7 hours. It remain just like hang up. So I switched off the PC and rebooted. Then it is showing the error: "udevadm trigger is not permitted while udev is unconfigured. Gave up waiting for root device."
Now my Lucid Linx is almost dead. There is also no 'Repair' option while booting from Ubuntu 10.04 CD. Pl help to restore it.
I upgraded to the last ubuntu last week and since I get the error: "udevadm trigger is not permitted while udev is unconfigured."I followed different posts on the forums but none helped: [URL]I did the sequence:
"1. Boot liveCD 2. "sudo fdisk -l" to find your boot disk, in my case it is /dev/sda5. 3. "sudo mkdir /media/newroot"
when I update the ubuntu, I set it shutdown after 60 minutes uisng "sudo shutdown 60",because I think the update will complete in 40 minute. However today when I start the computer, it can not startup the ubuntu. I got a screen which sown the message in the title,after I search it using google, some people have encounted this proble, their solve way is to use a live cd to chroot to the old root and complete the update. However I can not. The following is my suitation:
Is there a way trigger a shell script after my DHCP server successfully gives out, either a specific IP address or to a specific MAC address.I have two Xbox360's in my house that both receive IP address via DHCP reservations from the Ubuntu server.I have come to accept that without having two public IP addresses getting both to have an open NAT will be very difficult. I have decided that I am OK with only one being able to have an Open NAT at a time, but I want to change the firewall rules according to which Xbox 360 turned on first. This way I can move between level in my house and play online without having to modify rules manually.
I just setup a server using ubuntu server edition also installed apache, php, mysql and phpmyadmin.. when i try to setup FTP permission via winscp i get the error /var/www/phpinfo.php: Operation not permitted. ans so on for other files present there..
I have two identical hard drives; same make, same manufacturer, same model, and same capacity, which I'm trying to run in a RAID1 mirroring scheme. The problem: configuration files for md arrays only lets me use device names, such as /dev/sdb and /dev/sdc. To keep these the same (and in the same order) when I boot I wanted to write a udev rule for them. Unfortunately, I have no way to differentiate between these two drives, as they seem to be identical. Normal methods of differentiating by size or model name wont work. I think I can use UUIDs; but I neither know how to get the UUID of a device/partition, nor do I know how to use it (if it is possible) in a udev rule.
Solution:
run udevadm info --query=all --path=/sys/block/sdb # or whatever block dev
Look for and use "ID_SERIAL_SHORT" which is unique even for identically manufactured disks. Write a udev rule based on this property.
Is it possible to set up a udev rule that will check if a file exists on a USB drive?
I've got a few ubuntu servers in environments with some very not-techy peoples. Im hoping to get to the point where I can give them a few USB sticks with scripts on them, and if they plus one of these sticks in it will be mounted in, say, /media/special (rather than /media/usb0..7) and then the script would be run. But if a usb drive without special.sh is inserted, it should be mounted to /media/usb0..7 as normal.
I've been googeling for udev rules, and it seems simple enough to specify a mount point based on brand/model/serialnumber/etc... but i havent been able to find anything about checking for the existance of a file.
Tho the more i think about it, the more im starting to think its not going to be that straight forward. Can udev check for a file on a drive before that drive is mounted? Is it going to be a case of mounting every drive to /media/usb0..7 then having a script run that will check for the file, and if its there change the mount point before running special.sh?
I Installed Ubuntu 9.10 yesterday on a new machine. I started the update manager before I went to bed, (over 300mb's of updates) This morning the computer was unresponsive to get the monitor to come out of sleep. Was forced to power down. I imagine it was at a point of configuring one of the first updates. Now when I try to boot this is what I get......
udevadm trigger is not permitted while udev is unconfigured.
udevadm settle is not permitted while udev is unconfigured. svgalib: cannot open /dev/mem.
I am trying to install ubuntu 11.04 to my laptop, currently I have 10.10 installed and working. When I try to boot the computer from USB for installation, I get (after waiting a few minutes):
[Code]...
I am currently using windows 7 and ubuntu as dual boot. I didnt have this problem when I was installing 10.10. I am not sure but I think I upgraded my BIOS after my 10.10 installation, so that might be related. I didnt change anything else related to hardware since.
I am not sure what other information I should provide, Also note that given error message might not be 100% correct as I have typed it from a photo.
Problem occured yesterday and has added 3 mins to my boot time. all i can say about it is that it occured after a yum update and then a crash while using wine. i navigated to the file but really cant say much about it. however the pci call there makes me wonder if it is related to the post below.
I tried to update my fully-working 64-bit 11.1 system to 11.2. I used the network install and chose the Update option. It took a few hours so I didn't sit through the entire installation but when I returned the 11.2 login screen was displayed. Having logged in, however, I found that I couldn't access the network.The boot log showed that network had failed to start. "ifconfig" lists only the "lo" interface. "ifstatus eth0" returns "Interface eth0 is not available"
Network Settings in YaST lists 2 entries in the Overview tab. The first entry has Name:"NetXtreme BCM5755 Gigabit Ethernet PCI Express" and IP Address: "Not configured".The detail pane for this entry shows "NetXtreme BCM5755 Gigabit Ethernet PCI Express (Not connected) BusID:0000:3f00.0 Unable to configure the network card because the kernel device (eth0, wlan0) is not present. This is mostly caused by missing firmware (for wlan devices). See dmesg output for details". The Edit and Delete buttons are both disabled for this entry.
The second entry has exactly the same name as the first with the IP Address listed as "DHCP4". I assume this was the entry that was carried over from the 11.1 system. The detail pane for this entry shows "NetXtreme BCM5755 Gigabit Ethernet PCI Express (No hwinfo) Device Name: eth0. Started automatically at boot. IP address assigned using DHCP4". The Edit and Delete buttons are both enabled for this entry.lspci reports "3f:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5755 Gigabit Ethernet PCI Express (rev 02)"
lsmod lists only "edd", "loop", "sr_mod", "sg", "cdrom" and "dm_mod". The files in /etc/sysconfig/network/ are "if-down.d/", "if-up.d/", "providers/", "scripts/", "config", "dhcp", "ifcfg-eth0", "ifcfg-lo", "ifcfg.template", "ifroute-lo",
I installed Ubuntu Netbook Edition 10.10 on my Eee PC 901 (the one that has 2 SSD's). It all went fine, and I ran the update manager straight after install and config. It installed the updates (all 198 of them!) without error. I was prompted to restart, so I did. I got the error "udevadm trigger is not permitted while udev is unconfigured". I found out that this error is well documented, and I followed the guide at [url](apparently it affects all variants, not just UNE).
It went O.K., until I tried the command "sudo chroot /media/newroot". I got the error that "cannot run command '/bind/bash': no such file or directory". What should I do?
I cannot boot into and earlier kernel (problem/current one is 2.6.35-23-generic) I can only fix it via live USB stick.
There is a cable plugged in to the second network card, but that interface is not configured. I'm getting a lotof "martian source" alerts because of this.If the interface eth1 isn't started because it isn't configured, why am I getting these messages?
my brother's computer is pretty slow, but was working fine with ubuntu karmic, but I decided to finally upgrade him to lucid the other day, and recently his bootups take, at worst, 10 minutes,when in karmic it took way less. It just sits on a blank screen (not even a blinking cursor)
His pc's specs are: 1.4 Ghz processor (single core) on-board graphics (no graphics card) two hdd's one 80GB and one 150GB (the 150GB is split into 3 partitions) 465.7MB of ram 4.1GB of swap
I've attached his bootchart and it seems that Modprobe, Framebuffer, udevadm, and blkid are taking the most time to load, but I dont really know, i'm new to linux. Also how do i disable bootchart now that iv'e used it. p.s Heres he same bootchart just in case the one attached gets shrunk by ubuntuforums [URL]..
This has been happening for a while and I can't figure out how to fix it. If I'm surfing the web listening to music, when I type something -- the song will start changing. Has anyone else run into this problem? Does anyone know how to fix it
I have a keyboard&monitor damaged laptop which I've converted into a media server/HTPC with a large external monitor. I've installed Ubuntu 9.10, and attached an external 1TB HDD with my video collection. As a media player it works perfectly fine. I can connect to it through my home network, both with VNC and with SSH. I can use VNC on my current laptop to access the player's desktop and play video files. However, this is awkward as the screen resolution of the playback monitor is 1920x1080 - much bigger than the laptop's screen - which means I either end up scrolling the viewpoint around, or scaling the virtual screen down to make reading text very difficult.
What I'd like to be able to do is to trigger Gnome applications - specifically the Totem video player - via a SSH session, on the current Gnome desktop. The idea is that I'd like to be able to browse the directories which house my video collection in SSH, launch the player in the session, and have it appear on the monitor. Ultimately, I'd like to be able to invoke this from a PHP script - thus allowing me to create a (simple) web application on a LAMP installation which would allow me to browse & play my video collection. Currently, when I try and invoke totem, it seems to want to connect the invocation of the software to the SSH session, which - of course - it can't do. Where I might start in trying to set this up?
I use network-manager-pptp to connect to my VPN server. However, occasionally my VPN drops out (although my Internet stays up). I was just wondering how I could make the VPN drop-out trigger a bash script, for example playing a sound to alert me that the VPN has dropped?
I have what I hope someone finds to be a simple problem. I am running a data acquisition computer for a research project, where multiple people use the same non-privileged user account to take data and save it to /incoming. Once the file has been closed, I would like to somehow copy the data into a more permanent location owned by root. Obviously giving the shared user account sudo permission would be a huge security hole.
I know that this should be possible using some sort of client/server connection, but writing my own server just for this little task seems a bit cumbersome, and is something I have no experience with. Nor have I ever written a daemon/init script before.
Does anyone have any ideas on a simple procedure I could use? Very few things are fixed in stone, but the copy operation is necessary - the final location is a RAID5 array, and the write speeds are too slow to keep up with the data stream.
If a client/server type of thing really is the best way to go, anyone have any links to good tutorials to make a simple server and daemonize it?
After running 9.04 for a year, I upgraded from 9.04 to 9.10 and then to 10.04 using Update Manager. My Dell computer crashed several times during the upgrade to 10.04. I restarted each time from a recovery version of 10.04, and eventually the upgrade was completed. As far as I can tell after a few days, everything I normally use seems to be working. However, when I add a package with Synaptic I get the error message below. Is the message significant? Do I need to address each error?
I wanted to know command to triggered "Safely Remove Drive".So I could implement it on Hardy 8.04 http://ubuntuforums.org/showthread.p...88#post8674988
I wanted to make a simple script that would trigger on certain environment events. For instance, I want the script to trigger whenever a new file gets copied or placed on the Desktop, and cut that file and place it somewhere else. Sort of cleaning the Desktop process. Here's the thing: I want to trigger on it's own, not requiring me to open shell and invoke it from there
Scheduled Tasks is giving me a hard time. I have a command set for 23:00 daily as "gthumb -f ~/Pictures/ScheduledPic.jpg", but when the time rolls around, nothing happens. The strange thing is, it does work when I press "Run scheduled task." I get the same results if I select a different time or change it to "google-chrome ~/Pictures/ScheduledPic.jpg". My other scheduled task, a Perl script, works fine.
I have this basic program that is supposed to scan a string for a delimiter and output which segment of the string the user wants, like awk '{print $2}'. The problem is, I always get a segmentation fault when I run the code and I can't figure out what triggered it.
Here is my code:
Code:
int main(void) { char *string = "my name is joe"; char dlimit = ' ', *good; int index = 2, round = 0; int i, place = 0, t;
[code]....
It keeps track of how many times the delimiter was found with round, and the position of the last found delimiter with place. index is to specify which segment of the string the user wants. One more thing, is it necessary to manually allocate memory with malloc() or calloc() when you can just initialize a variable and it be fine? Like:
I really like that in Ubuntu when you type in a command that's not on the system you get a message saying the package that provides that command. Unfortunately it also slows down my system, so I would like a way to trigger this manually. Something like search-command command-I-dont-have
Is there any way to do this? I'm using Ubuntu 9.04 under andLinux but would also like to use this on a regular Ubuntu 9.04 install.
I'd like to know if it's possible to automatically mount, and fire up rsync to sync a USB drive with a directory? Specifically, I'd like to copy as much data as the drive can hold and only delete the oldest files if space is needed. I would assume I'd do something like this with a script, but my problem, is where to start.
