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".

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Ubuntu Installation :: Udevadm Trigger Not Permitted While Udev Unconfigured / Sort It?

Sep 2, 2010

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...

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Ubuntu Installation :: Boot After Updates - Udevadm Trigger Is Not Permitted While Udev Is Unconfigured

Sep 7, 2010

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.

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Oct 2, 2010

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.

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Dec 19, 2010

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"

[code]....

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Mar 6, 2010

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:

http://imagebin.org/87841 my command

http://imagebin.org/87840 my partition

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Mar 14, 2010

Noticed this on boot up the other day, but it doesn't seem to have a negative effect. Everything appears to be running just fine.

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Is this something that needs to be resolved or ignored?

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May 13, 2011

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Jul 19, 2011

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..

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Ubuntu Servers :: Using Identical Devices With Udev?

Jan 12, 2010

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.

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Ubuntu Servers :: Udev Rules To Check If File Exists?

Jun 9, 2011

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?

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Apr 10, 2010

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.

how to go about configuring?

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Jun 26, 2011

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[Code]...

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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.

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Jan 24, 2010

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Starting udev:

Wait timeout. Will continue in the background.

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Dec 1, 2009

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",

[code]....

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Dec 20, 2010

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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?

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Mar 24, 2010

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Sep 1, 2010

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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]..

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Mar 12, 2011

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Jan 11, 2010

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Mar 3, 2010

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Jun 29, 2010

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Nov 20, 2010

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[Code]....

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Jan 31, 2010

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Here is my code:

Code:

int main(void) {
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[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:

Code:

int z = malloc(sizeof(int));
when you can:
int z;

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