Kernel Questions

download traffic control tc qdisc ingress

invalid@example.com (ptroms) — Tue, 15 Jul 2025 20:40:30 +0000

I have been trying to arrange the download by queuing discipline to get the proper order and avoid chalk point, at some point looking closely at the documentation I have no idea what is not right. Anyway, I have a tiny script following structure:
#!/bin/bash
P_CEIL=50
P_DEV=ppp0
modprobe ifb numifbs=1
ip link set ifb0 up
tc qdisc add dev ${P_DEV} ingress
tc filter add dev ppp0 parent ffff: protocol ip u32 match u32 0 0 action mirred egress redirect dev ifb0
tc qdisc add dev ifb0 root handle...

download traffic control tc qdisc ingress

Brother HL-3170CDW Driver or Clone Driver?

invalid@example.com (fbeye) — Thu, 27 Mar 2025 14:16:25 +0000

Hello

I am fairly new to CUPS but have had success with older printers I have had laying around.. I had just purchased said Printer but am having major issues installing it in CUPS on Slack. As I am new I am unsure if it is just a CUPS issue I am having or if their is even a driver for this device for Linux [yet] at all... I know ideally you want a driver that supports all the cool features your printer has but I just... want to print... so was also wondering if there were any clone.generic...

Brother HL-3170CDW Driver or Clone Driver?

NFS mount broken with latest linux-azure kernel

invalid@example.com (remkoh) — Wed, 26 Mar 2025 23:40:29 +0000

Running on hyper-v I'm using Ubuntu's Azure kernel.
Today I updated to the latest 6.11.0-1012 version.
After a reboot none of my NFS shares (running on a PetaSAN cluster) were mounting anymore.
I had to revert to the previous 6.8.0 kernel to fix the problem.
Does anybody have any clue/insight on what happened with the latest kernel and how I can update the kernel without losing my NFS mounts?

Problem with config-4.4.30-mod-std-ipv6-64

invalid@example.com (picaron) — Fri, 04 Oct 2024 01:42:04 +0000

Greetings to all.
I don't know if this will be the right place to make my query. If not, please tell me where to relocate it.

My dedicated server is located at OVH.
Debian 12.
ISPConfig Version: 3.2.11

Everything works perfectly, except when I try to update the operating system.

Code:

initramfs-tools post-installation script returned error exit code 1.

Code:

Linux server.myweb.com 4.4.30-mod-std-ipv6-64 #9 SMP Tue Nov 1 17:58:26 CET 2016 x86_64
Linux server.myweb.com...

Problem with config-4.4.30-mod-std-ipv6-64

Ip address restriction

invalid@example.com (Harsh Shah) — Thu, 29 Aug 2024 09:43:51 +0000

Hi
I want to know that Is it possible that maximum number of hosts in a network, can restrict class of ip address that can be used for network ?
I have tried to get the answer for it but didn't get proper answer.
Can anyone please help me ?
Thanks in advance.

Compiling a Kernel

invalid@example.com (Jameson Taylor) — Mon, 18 Mar 2024 10:07:40 +0000

Hello!
I am new to Linux a task that I am currently trying to figure out is how to compile kernels what is the best way to do so?
Thanks!

Who has tried this kernel options?

invalid@example.com (concept21) — Wed, 29 Sep 2021 11:40:40 +0000

There are options like these in any Linux sysctl.conf. Are they worthy of a try? Do they increase performance and security?
At least, I hope they do not hang up my server.

Code:

#kernel.domainname = example.com

# Uncomment the following to stop low-level messages on console
#kernel.printk = 3 4 1 3

Epyc processors versus Xeon?

invalid@example.com (Taleman) — Thu, 26 Nov 2020 17:58:44 +0000

I'm planning getting a new dedicated server (from OVH), they now have hosts with Epyc prosessors. Can someone offer experience installing Proxmox on such a host and running virtual hosts with ISPConfig on them?
Technical specs look like performance is good, are there any problems with compatibility or support?

Version troubleshooting question

invalid@example.com (brian buzzella) — Fri, 21 Aug 2020 05:58:23 +0000

Im not sure this is the right forum for this but i have been having trouble with some commands and im trying to figure out if its me or the version of linux i have. Is that even possible for some commands not to work properly with a more updated version?

How Linux work with MacOs

invalid@example.com (Nga Nguyen) — Fri, 26 Jun 2020 06:01:23 +0000

I already downloaded and Installed Kali Linux to my Mac but it does not work on my computer. Does any one has any ideas. Thanks

Ip Address

invalid@example.com (CYRIS) — Sun, 23 Feb 2020 19:03:31 +0000

I want to know that is it possible that maximum number of hosts in a network can restrict class of ip address that can be used for network

Best Live Patching Technology

invalid@example.com (Angie_H) — Wed, 22 Jan 2020 06:33:39 +0000

Hello - I am a new Linux user and am currently working on my Bachelor's Degree in IT with Advanced Cyber Security. I am enrolled in a Linux Fundamentals class and am curious about live patching. For executing rebootless updates which technologies would experienced users recommend using? I have seen Ksplice, kpatch, and kGraft recommended in various articles I have read but is one better than the others? Or are there other technologies available that can be used for rebootless updates that...

Best Live Patching Technology

Memory in Linux

invalid@example.com (Harsh Shah) — Wed, 30 Oct 2019 12:38:36 +0000

Hi
I have Linux in my system. Currently I'm working with it.
I want to know that how much memory Linux is used in my system? I did some research, but not get solution yet.
So hope for getting the best answer from here.
Thanks in advance.

Linux Kernel (Ubuntu) Patch Without Rebooting

invalid@example.com (ahrasis) — Sat, 21 Sep 2019 18:27:01 +0000

I already know that there is already canonical livepatch to achieve this but I was thinking whether it is possible to do the patches ourselves without relying on it.

The main reason for attempting to play with this is Ubuntu requires snapd and apparmor which the later has problem with ISPConfig 3.1 server setup.

This is also because it is limited to critical patches on kernel version and to LTS version which is not necessarily the latest stable kernel or the latest Ubuntu e.g. canonical...

Linux Kernel (Ubuntu) Patch Without Rebooting

Azure VM: Quota format not supported in kernel

invalid@example.com (harwee) — Sun, 23 Sep 2018 10:20:32 +0000

Hallo zusammen,
ich habe einen neuen ISPconfig Server unter Ubuntu 18 auf Azure gebaut. Soweit so gut, jedoch quotatool funktioniert nicht:

root@v8:/home/harwee# quotacheck -avugm
quotacheck: Scanning /dev/sda1 [/] done
quotacheck: Checked 37575 directories and 307028 files
root@v8:/home/harwee# quotaon -avug
quotaon: using //quota.group on /dev/sda1 [/]: No such process
quotaon: Quota format not supported in kernel.
quotaon: using //quota.user on /dev/sda1 [/]: No such process
quotaon:...

Azure VM: Quota format not supported in kernel

Linux Kernel

invalid@example.com (gustavowoltmann) — Thu, 07 Sep 2017 23:03:33 +0000

Have you heard the news that the long-term supported Linux 3.14 kernel branch is about to reach its end? What are the pros and cons on this upcoming event?

How do I modify correctly an option in the kernel ?

invalid@example.com (Nioubee) — Fri, 05 Aug 2016 22:42:32 +0000

Hello everyone,

I am trying to setup a TVHeadend transcoding server for home.
The Ubuntu kernel allows me only 4 DVB-T tuner to be used at the same time.
My main problem is here, I need to hook up more tuners (I have 12 PCTV 292e HD USB tuners).

After looking on the web, I need to modify the MAX_DVB_ADAPTER located at Device Drivers > Multimedia Support > Max DVB Adapter. I did it.. I installed them using "dpkg -i compiledfiles.deb" then "update-grub".
After rebooting on the new kernel...

How do I modify correctly an option in the kernel ?

compiler version

invalid@example.com (hooked) — Wed, 27 Jul 2016 02:41:52 +0000

I'm trying to compile an openMosix-patched kernel. What compiler version should I use?:

NIC bonding doesnt work

invalid@example.com (shangsuo) — Sun, 03 Jul 2016 19:20:24 +0000

try to bond two NIC but cant seem to work. Any experts can offer any advice?
Suspect vmware simply doesnt support virtual machine running NIC bonding but I cant be sure

switch: vmware workstation virtual network
os:Oracle Enterprise Linux r5u5 x64

*note /etc/modprobe.conf is deprecated. Now uses /etc/modprobe.d/abc.conf
http://docs.redhat.com/docs/en-US/R..._Guide/s2-networkscripts-interfaces-chan.html

#configuration:
vi...

NIC bonding doesnt work

Debian Jessie upgrade kernel problem

invalid@example.com (gpetrom) — Sun, 18 Oct 2015 17:42:23 +0000

Hi

I have a fresh debian jessie installation on kvm host. When i am trying to ugrade debian jessie i get the following error.

Code:

Reading package lists... Done
Building dependency tree      
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up linux-image-3.16.0-4-amd64...

Debian Jessie upgrade kernel problem