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Questions tagged [kernel-modules]

97 questions
12
votes
3 answers

UDP traffic not forwarded from Docker containers -> Docker host

I have a docker container and I am unable to run DNS lookups from inside containers, although it works fine from the docker host. The configuration management code that builds the Docker host is known to work on a standard RHEL 7 image from the…
Alex Harvey
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10
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4 answers

how do I disable the nf_conntrack kernel module in CentOS 5.3 without recompiling the kernel

I'm running CentOS 5.3 and want to disable the nf_conntrack module to improve network performance for haproxy. I'm running iptables with some simple rules. I don't really need the connection tracking. I'm running on Rackspace cloud servers, so I…
user22277
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8
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2 answers

How do I tell which kernel module is servicing a /dev device?

How do I find out which kernel module (as seen by typing lsmod) is servicing a particular device in /dev ? In other words, say I have a device, /dev/mouse0 and I want to find out which kernel module is installed to service that device. How do I do…
regulatre
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6
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2 answers

Make kernel modules available that have been deactivated on Fedora

Edit: I turned Cristians answer into a script which does everything automatically: https://github.com/frans-fuerst/magic/blob/master/fedora-activate-can.sh I need some kernel modules which are available in the Linux source but deactivated on Fedora…
frans
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5
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2 answers

NFS Performance issues on Oracle Linux 6.7: Shared libraries on NFS slow down system

I am currently hunting down some performance issues on some VMWare virtual machines with the same amount of memory and cpus, running Oracle Linux 6.6 (Kernel 2.6) and 6.7 (Kernel 3.8). The machines mount the same share over NFS4 which contains some…
Nodebody
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5
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3 answers

How do I build debian packages of kernel modules?

Specifically, I want to build a package for debian/lenny using the latest uvc drivers. I can compile and install them, but I want them packaged in the normal debian fashion. I imagine I want to use make-kpkg somehow, but I don't know how. …
Jayen
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5
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9 answers

Howdo I tell which kernel modules are required?

Say, I have a default Gentoo install with all the modules (e.g. device drivers) compiled. From this point, is there an easy way to exclude the unused modules the next time I recompile the kernel?
yanchenko
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5
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2 answers

Linux says a kernel module has an unknown symbol, but another loaded module provides it

I'm trying to install a driver for a USB DAQ box, which annoyingly, I have to compile myself. I believe I've succeeded -- I have two .ko files: -rw-r--r-- 1 root root 45271 2010-03-18 21:24 advdrv_core.ko -rw-r--r-- 1 root root 24312…
raldi
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4
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1 answer

How to prevent useless kernel-modules from loading?

Our Ubuntu-servers all seem to have various unused kernel-modules loaded wasting RAM and, in the case of jfs for example, running a bunch of useless processes (jfsCommit). I can use rmmod to get rid of them at runtime, but I wonder, what causes them…
Mikhail T.
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4
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1 answer

Linode Kernel Headers

I am trying to install the Idera (R1soft) linux agent on a Linode running Ubuntu 12.04LTS. The agent requires a driver which in turn requires the kernel headers. Linode uses custom kernels though so the kernel headers I want are not in the apt-get…
digitaladdictions
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4
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2 answers

Why Kernel Shared Memory is 0 on Ubuntu 12.04?

Can any one explain to me why KSM is not working does that mean that currently my kernel is not utilizing KSM for less ram utilization. grep KSM /boot/config-3.2.0-23-generic CONFIG_KSM=y cat /sys/kernel/mm/ksm/pages_shared 0 cat…
Kevin Parker
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4
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1 answer

Disabling/Enabling Modules Parameter RHEL

I'm working with kernel module parameters, and I've found myself a bit confused. In particular, I'm attempting to enable posix ACL support for XFS file systems. This requires the XFS module to be loaded with the parameter XFS_POSIX_ACL set to yes. …
Univ426
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1 answer

Listing all compiled kernel modules between two trees?

I've got a system with two different kernel tree sources installed. One kernel boots perfectly fine, the other kernel panics from not seeing the hdd / label. How do I compare two different kernel builds and determine which kernel models one has,…
bobby
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1 answer

How to keep custom kernel modules on kernel updates installed?

I've got a NIC (Asus XG C100C) that is not properly supported in the current Linux kernel. Hence, I installed driver which I compiled from source. Every time when the kernel is updated, I have to reinstall it and copy the atlantic.ko to…
SDwarfs
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0 answers

How to get x86_energy_perf_policy // linux-tools-* for Linux kernel 4.7.0-xyz

I am using pstate-frequency to set our server cpu's frequency. This tool needs the x86_energy_perf_policy which is provided by the linux-tools-common package. Using the distributions standard kernel I could simply install…
Flatron
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