Slackware :: Udev Not Creating Usb/hiddev* Nodes?
Dec 3, 2010
Are there any prerequisites which much be met in order for udev to create /dev/usb/hiddev* nodes?
I have two Slack 13.0 systems, each connected to a APC UPS via USB, one of which creates a hiddev0 node and the other doesn't. apcupsd can't find the UPS unless this node is present.
The "working" system has been stable in its current configuration for so long that I honestly can't remember if I had to tweak anything in this regard. I've verified that it doesn't use any local udev rules to create this node, and to the best of my knowledge there are no external scripts or processes which would create it either.
The non-working system has a similar configuration - no local rules and/or scripts which touch usb devices or nodes.
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Mar 13, 2011
Early in the boot process, system generates message "Creating nodes with udev." After a pause, CPU timeout dumps are listed on the display. Likely it is related to wthe display driver (Intel 845G) as the system can be brought up in failsafe mode. /etc/X11.conf is intact. The system was apparently successfully upgraded online from 11.3 using the zypper method. This issue has appeared a day following the upgrade, after restarting the 11.4 system.
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Sep 16, 2009
I'm putting a server together and have run into a boot up problem. (I thought about putting this in the server forum, but it might be a more generic problem that others have seen and know how to rectify.) The install seems to have gone just fine. I have the /boot partition on an internal IDE drive. The rest of that drive and another are mirrored in a Raid0 configuration (using the Linux software to do that) for data storage. The swap partition is a part of the Raid5 SCSI array that also has the / (root) partition on it.
After installation it would not finish the booting process. I suspected that GRUB didn't like all the Raid arrays and such, but it seems to be fine. I can say that because the machine will boot into rescue mode with the GUI splash screen and I have access to the whole directory tree. I have already searched on-line and following prudent advice, ran the yum update while in the chroot /mnt/sysimage mode. That only took overnight to download and most of this morning to complete. Still no dice. Used vim to delete the rhgb quiet commands in the grub.conf file so I could see where the kernel seems to be hanging.
So right after the "Creating initial device nodes" is a line about my generic PS2 wheel mouse. So I tried a USB mouse. Got more output so tried swapping out to a USB keyboard. Got a little further with more information about input devices, but still stops. Also, I tried a PCI video card just to make sure the onboard video wasn't the problem - no change. So, if someone in the Fedora community knows what loads up or is configured right after the mouse and keyboard, I might be able to figure out what's causing the computer to hang during the boot process.
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Dec 1, 2010
i have installed ns2.33 and added mobiwan , i tried to run tcl script after modifyng simple tcl which i have got along mobiwan patch, but the problem is after creating some nodes and setting their positions in the tcl, according to my topology, i tried to run , but the command i have included in tcl , which sets the positions for mobile nodes, has no effect , which means that the positions of the mobile nodes is already fixed , trough tcl i am not able to change , and also each time when i run nam , different positions mobile nodes taking, and also the mobile node is not moving , even if i have given mobility to it, at different time , i have given different destinations.this is part of tcl in which i have set positions mobile node.
Code:
set cn_ [create-router 0.0.0]
set router_ [create-router 1.0.0]
set bs1_ [create-base-station 1.1.0 1.0.0 200 200 0]
set bs2_ [create-base-station 1.2.0 1.1.0 200 600 0]
set bs3_ [create-base-station 1.3.0 1.2.0 600 200 0]
code....
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Apr 12, 2010
I have a Linux server that runs the Sybase DB. Sybase suggests using character devices to access raw devices rather than O_DIRECT to block devices, or cooked FS's. So, I went ahead and configured /etc/sysconfig/rawdevices as such:
/dev/raw/raw1 /dev/vg01/tempdb
/dev/raw/raw2 /dev/vg01/testdb
/dev/raw/raw3 /dev/vg01/fakedb ...
This works fine. I set 'chkconfig rawdevices on' and all is well. I read that this method is deprecated and went about trying to accomplish the same via Udev rules. I already use udev rules in /etc/udev/rules.d/60-raw.rules to set permissions on these devices, i.e.
ACTION=="add", KERNEL=="raw*", OWNER=="sybase", GROUP=="sybase", MODE=="0660"
That works fine. I even set symbolic links:
KERNEL=="raw1", SYMLINK+="vg01/rtempdb"
KERNEL=="raw2", SYMLINK+="vg01/rtestdb1"
KERNEL=="raw3", SYMLINK+="vg01/rfakedb2"
But I cannot seem to get the actual device creation piece to work within udev (it only works using rawdevices). I've tried:
ACTION=="add", KERNEL=="vg01/tempdb", RUN+="/bin/raw /dev/raw/raw1 %N"
No errors, but nothing happens. The device just doesn't create. I've also tried doing it by passing major and minor numbers. Is it possible to get all of this into udev rules or am I stuck with rawdevices? I'm also utterly confused as to the future of rawdevices... the raw man page said it was deprecated, and now at v5.5 it has that piece taken out. Also RHEL 5.3 dropped support for rawdevices in initscripts only to add itback in 5.4. I'm an admin, not a DBA, so I cannot say if this is a bad or good way, only that it is the way the vendor supports and recommends, so it is the way that I must go... just trying to make it work as "un-deprecated" and cleanly as possible.
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May 21, 2010
I need to prevent udev from creating the /dev/v4l/by-path/* and /dev/v4l/by-id/* files upon connecting my webcam. The problem is that Kopete doesn't want to display the video if these files are present. It works fine if I remove them, but I'd rather not have them created in the first place, since they seem to be completely useless anyway.
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May 12, 2010
i need all my /media/* newly created by insertion of usb drives, chmodded 666.I tried some tips using various threads, but i failed.I'm on Slack 64 13.0.
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Apr 19, 2011
I have a trayless SATA hotswap bay that is really terrific for quickly attaching and removing SATA hard drives. I'm trying to write a udev rule to create a symbolic link to the device node for the drive that is attached through the hotswap bay (/dev/bay -> /dev/sdX). This eliminates any ambiguity when performing destructive tasks (fdisk, etc). I'm running squeeze amd64. I've read through several tutorials and have it working somewhat. Here's the output of udevadm info for a drive attached via the hotswap bay.
looking at device '/devices/pci0000:00/0000:00:11.0/host7/target7:0:0/7:0:0:0/block/sdb':
KERNEL=="sdb"
SUBSYSTEM=="block"
DRIVER==""
ATTR{range}=="16"
ATTR{ext_range}=="256"
ATTR{removable}=="0"
ATTR{ro}=="0"
ATTR{size}=="156301488"
ATTR{alignment_offset}=="0"
ATTR{capability}=="52" ....
Here is my udev rule
DEVPATH=="/devices/pci0000:00/0000:00:11.0/host7/*", SUBSYSTEM=="block", SYMLINK+="bay%n"
This produces the desired behavior and gives me an fdisk-able device node. The problem I am having is that the "host" component of the DEVPATH varies from bootup to bootup. I'm just using on onboard SATA, host2-7, specifically host7. There is also onboard PATA, host0-1. It seems to just be random which "host"s are assigned to which controller. For example, the next time I boot the system, the onboard SATA will be host0-5 and the onboard PATA will be host6-7. In this simple case, I could just write 2 rules, one for each possibility and it would still be correct because of the different PCI addresses of the two controllers. But on systems with more SCSI (uh... libata, actually) controllers, a "host" file can point to different physical ports between bootstraps. This would be bad. Does anyone know of a way to write a rule to tie a device node to a specific physical SATA port on the motherboard/hba?
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Aug 17, 2010
I use Slackware 13.0. I just upgraded from 2.6.32 to 2.6.35. On 2.6.35, the kernel supplying strange non-existant node like hda* and many symlink like cdr cdr0 cdrom cdrom0 etc. Well, i use libata and disable the old ATA driver, so my HDD should only be displayed as sd**. Also, i've checked all the udev rules, and i don't see any SYMLINK entries that would produce that cdr cdr0 links. My 2.6.32 and 2.6.35 config are identical. Everything were working normally on 2.6.32. Btw, i've tried to upgrade to 13.1. Then boot the standard huge.smp kernel. The same problem occured too. And with other problem i get with 13.1, i decided to downgrade to 13.0.
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Jan 26, 2010
I'm building an i7 based machine and I've been looking at kernel optimizations for it. One kernel option that I'm sketchy on and haven't been able to find a good resource for is for MAXIMUM NUMA NODES. The default is 6, but I'm not sure if this is best for my particular hardware or not and I'm not exactly sure what this is all about.
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Nov 8, 2010
I've recently updated my Slackware 13.1 system to the Slackware current. Although I have created my "initrd" image without specifying the "-u" option to "mkinitrd" it still starts up "udev".
That is causing me some difficulty because I am using "dmraid" to detect my RAID arrays. I had created my own device names such as "/dev/sdr2" for my root partition. With 13.1 I had no problem, since "udev" was not started by the "initrd" unless the "-u" option was provided. The current version seems to start up "udev" even without that option.
Is there a way to disable "udev" in the "initrd", or is there a way to specify custom "udev" rules for an "initrd"? I tried placing a "10-local.rules" file in the "etc/udev/rules.d" directory of the "initrd-tree" but that file had no effect on the device names generated by "udev" during the "initrd".
Here is my script that creates the "initrd".
Code:
ROOTDEVNAME="/dev/sdr2"# Name of root device
LINUXVER="2.6.35.7-smp"# Linux modules version
CLIBVER="2.12.1"# C library version
ROOTDIR="/boot/initrd-tree"# Location of root filesystm
[code]....
It will be helpful for me to understand "udev" issues related to an "initrd" because I will eventually try to use "mdadm" instead of "dmraid". So far I have only been able to get my system to boot from the RAID array using "dmraid" and I often run into new problems when I update Linux. Still, Slackware has proven to have the best support for booting from my RAID array because of the user community, documentation and flexibility.
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May 29, 2011
I'm trying to configure gpsd 2.96 to start automatically from udev rule on a Slack 13.37 box.1. I've compiled and installed gpsd from sources and made sure it starts manually.2. I've copied the /lib/udev/gpsd.hotplug and /lib/udev/gpsd.hotplug.wrapper scripts in their places from the source tree and made them executable.3. I've copied the gpsd.rules file from sources into /etc/udev/rules.d4. I renamed it 99-persistent-gpsd.rules to run late in the bootup process.5. I've copied the /etc/default/gpsd file from sources and made sure it has the right settings inside.
Now, for the results. If I plug the gps usb dongle in while the system runs, it starts gpsd if it is not started, and it connects to it just as it should. But if I start the system with the dongle in, gpsd doesn't get started during boot. I can't find any relevant message in /var/log/syslog or /var/log/messages for boot time. There is stuff there from when I plug the dongle in while the system is running though. It's like udev ignores the rules for it at boot time.Is there something in the Slackware boot scripts that would prevent running those scriptssd.hotplug.wrapper which in turn runs /lib/udev/gpsd.hotplug which is a Python script)?Here is the contents of 99-persistent-gpsd.rules (ignore the comments referring to Debian, it was meant for a Debian box). My usb gps adapter is the first one - the Prolific chipset one:
Code:
# udev rules for gpsd
# $Id: gpsd.rules 5861 2009-08-03 13:41:01Z bzed $
[code]....
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Jul 10, 2010
I have just installed slack-13.1 on an acer aspire one netbook from a usb stick by booting the install kernel with noudev. I was able to do a complete install including lilo but upon rebooting my boot hangs when encountering my webcam.I see enough info to note the id as 0c45:62c0. This is a microdia webcam which I may be able to do something about later but in the first instance I'd like to be able to boot my system. The bios is very basic and there is no way to disable devices.
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Apr 7, 2010
The value of envar PATH for processes run by the udev system is "/usr/gnu/bin:/usr/local/bin:/bin:/usr/bin:.". If peer review (that's you!) agrees it is a poor choice how can I submit an enhancement request? The man pages do not say anything about bug reporting. Here are reasons why it is a bizarre choice:There is no /gnu/bin directory on as-installed Slackware. /usr/local/bin is empty (or very nearly empty?) on as-installed Slackware. Processes running under udev run as root; having "." in PATH is not good practice when running as root. Processes running under udev are likely to be doing "system" work so executables from the sbin directories are likely to be used. For example, udevadm itself is /sbin/udevadm. Presumably this PATH is set by udevd itself; it is not the PATH in effect when udevd is started by rc.M. AFAIK udevd's PATH is not configurable. The workaround is for processes initiated by udev to set a sane PATH for themselves, perhaps "/usr/sbin:/sbin:/usr/bin:/bin". EDIT: seen on Slackware 13.0 32 bit. EDIT2: rc.udev is run from rc.S, not rc.M as stated above
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Aug 16, 2010
I just bought a USB hard disk and when I plug it in it gets mounted as owner root and group root. I tried writing a udev rule for it based on the following guide:Nothing seems to work, it always mounts as root. Slackware 13.1, KDE, Dell Optiplex GX280, Western Digital Passport USB 320 gig drive.I am a member of the plugdev group, so it seems to me a rule should not even be necessary.
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Feb 24, 2010
Some times I boot up, and udev has labelled what is usually eth0 as eth1. Of course, my rc.inet1.conf is configured for seeing internet at eth0, so no connection, quite obviously. Then I reboot and the device label is back to "eth0". Actually I'm still not able to get connected, even at eth0, despite my nameservers being OK, and the default route gateway being all OK. PS. I have a static ip address.
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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.
"Triggering udev events: /sbin/udevadm trigger --type=failed"
Is this something that needs to be resolved or ignored?
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Dec 24, 2010
I switched today to slackware-current on one of my desktops to play with it and ran directly into a problem.
Since ages my lilo.conf has two entries for slackware. One for runlevel 3 and one for runlevel 4.
Code:
Since the upgrade this is no more possible because I get a kernel panic as soon as udevadm trigger is called. The stack says something about an unknown boot option. Because that i removed the append lines from my lilo.conf and i was able to boot the system. The crash happens when udev is called from within the ramdisk and afterwards. I tried both.
My question is now. Is this a bug in udev or expected? I have this setup since at least 5 years and had never problems with that. What do I have to do to be able to select the runlevel at boot time?
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Aug 18, 2010
I tried to install OpenSuse 11.3 on my brand new pc, which already had Windows 7 proffessional in it, and I went step by step through the installation without changing anything. It didn't work. I tried for a second time and this error message kept popping up: "Creating device modes with udev 2.0436224] [drm: i915_diver_load]*ERROR*Detected broken BIOS with 262140/2644kb of video memory stolen. 2.0436224] [drm: i915_diver_load]*ERROR*Disabling GEM(try reducing stolen memory or updating the BIOS to fix)"
And then a lot of letters and numbers wich make no sense to me. Now the only way I can initiate OpenSuse is with the OSuse boot dvd and on failsafe mode.
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Oct 13, 2010
Running against a situation here, for which I have solutions in mind, but for some reason or another they don't really strike me as "good" solutions.
I am making a customized for myself (eg with postgreSQL support) php package. Configure and make run fine; but upon make install the make tries to access httpd.conf in the $DESTDIR/etc/httpd
My first thought is: prior to 'make install' copy the file from /etc/httpd to the target dir;
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Oct 1, 2010
I was installing linux and i got the caution below:
WARNING: pkgtools are unstable with tar > 1.13. You should provide a "tar-1.13" in your $PATH. Cannot install /media/SlackDVD/slackware*/a/*.txz: file not found
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Jan 3, 2010
Wondering what software everyone uses to make DVD movies? Specifically looking for an easy solution to convert mpeg's and avi's. The is the only action my windows partition gets and I would like to finally get rid of it.
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Dec 22, 2009
Slackware 13.0, about to install it. I do have an existing Ubuntu installation with a roomy 5 GB of swap.
In the installer of Slackware, what should I do to use this swap?
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Feb 4, 2010
I'll be away from home for the following weeks (and perhaps months). I want to use the Internet with confidence, so I have setup an old computer with SSH and I'll be tunneling to that (from a netbook).I haven't remote-managed a computer for such a long time and I want to be sure that even if I do a mistake remotely, I can bring the computer back to a good known state.The home computer will reside inside my aunt's house and she knows very few about computers.
I've been thinking about burning a bootable DVD containing a tarball of a freshly configured Slackware. If I mess up, I can phone my aunt and tell her to simply put the DVD inside the drive and press ctrl-alt-del. The DVD boots, un-tars (the fresh Slackware), ejects the CD-tray, waits for her to press Enter, closes the tray, and finaly reboots to my good old known fresh Slackware.
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May 27, 2010
I'm trying to create some Linux partitions to install Slackware on my Lenovo W510 notebook and I'm getting some partition "errors" when using fdisk or cfdisk during the Slackware install. I have a feeling this is due to the hidden system restore partition and was wondering how others have dealt with this.
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Oct 25, 2010
I am an experienced Linux user, but have never used Salix before. I have a root account set up on my other Linux distros, but can not figure it out using Salix. The reason I want a root account in Salix because I believe in freedom of choice, and my choice always was and always will be to have a root account set up so I can login as root. I am aware of the risk involed in creating a root account.
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May 3, 2011
I have two computers with SATA drives and burners installed, and when I try to burn a DVD or CD on either one it comes out corrupt. I have NO such problems on my older IDE drives. Is there a setting I'm missing? I'm getting sick and tired of making coasters.
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May 25, 2011
Currently running Slackware 13.37 64-bit on a notebook and finally have suspend/hibernate after realizing that USB devices, especially USB HDDs, need to be disconnected before suspend/hibernate can work. Problem is I have 2 USB HDDs that are connected to my notebook whenever the notebook is stationary for the extra storage so I'd like to create a script that would get invoked that would stop the suspend/hibernate process if certain partitions are mounted. I know what I would like to accomplish, but I have basic scripting knowledge
1. script would basically store a user specified string containing devices that are non-USB, ie: $NONUSB="/dev/sda /dev/sdb"
2. possibly use /etc/mtab to get a list of what is currently mounted and then remove lines containing whatever is specified in $NONUSB and store those values in $USB
3. run a for loop that executes 'umount' on each token in $USB
3a. stop suspend/hibernate process if 'umount' fails at any point
3b. if 'umount' passes then suspend/hibernate
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Jun 17, 2010
I ise debian lenny on both server and nodes. Nodes are in sence of drbl drbl project.
So, my sendmail on server works well but on nodes in syslog i see:
Code:
Configuration of sendmail on server and nodes is same and it is:
Code:
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Oct 22, 2010
How to set the anchor node in NS2? How to define the channel propagation model as Log Normal Shadowing instead of two ray ground reflection model in NS2?
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