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Questions tagged [linux-kernel]

The Linux kernel is the operating system kernel used by the Linux family of Unix-like operating systems. It is one of the most prominent examples of free and open source software.

The Linux kernel is the operating system kernel used by the Linux family of Unix-like operating systems. It is one of the most prominent examples of free and open source software.

The Linux kernel is released under the GNU General Public License version 2 (GPLv2) (plus some firmware images with various non-free licenses[citation needed]), and is developed by contributors worldwide. Day-to-day development discussions take place on the Linux kernel mailing list.

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enable fanotify on oracle redhat linux kernel 2.6.39-400

As a newbie in linux environment, I am trying to install clamav daemon, which is clamd, on oracle redhat linux 6 kernel EUK 2.6.39-400. It needs to have fanotify enabled in the kernel. As I see there is no fanotify.h in the…
Mehdi
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Can high disk cache usage lead to external fragmentation and ultimately to page allocation failures?

We're getting page allocation failures on a Linux server (3.2 kernel). We've been told the problem is directly related to the high use of the memory for cache; this would lead to external fragmentation, and ultimately to page allocation errors.…
Rubio Terra
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All terminal windows suddenly disappear in Linux

Sorry in advance for the wall of text. I'm having a problem which is leaving me with very few clues as to what might be going on. Also, I apologize if ServerFault isn't the ideal place for this question, but I don't think StackOverflow would be…
Mike Holt
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"sock_sendmsg-error 22" error in RHEL

I am using RHEL 5.10 servers ( which are in cluster using some shared services). When I restart them using "init 6" or "reboot". the servers hang while shutting down, continuously showing the below message: sock_sendmsg-error 22 I've to get in the…
dig_123
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Linux meminfo "Buffers" takes more than 10% total memory?

I noticed that meminfo - Buffers occupies significant amount of RAM on some servers in my work environment. I'd like to know what is exactly is "Buffers" and why it takes that much amount of RAM. Some quick googling indicate that "Buffers" are…
user2771324
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Removeing ulimit from boot / init

In CentOs as from version 6 there is a by default process limit 1024 for every user i.e /etc/security/limits.d/90-nproc.conf * soft nproc 1024 I have to execute a backend service/daemon "myservice", which require a bigger value in…
Nasir Iqbal
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Server crash : "unable to handle kernel paging request"

My fresh new Ubuntu webserver randomly crashes with the following error in the syslog. It doesn't respond anymore and I have to do a hard reboot. It happens almost one time a day. Server kernel is : Linux 3.10.23-xxxx-std-ipv6-64 #1 SMP Mon Dec 9…
Antares
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ext4 production ready on kernel 2.6.32 (debian6)?

I've to maintain a production system on debian6 (kernel version 2.6.32). I'd like to use ext4 on a ssd disk (and generally hope to improve performance upgrading from ext3). I can't find any reference about the ext4 state on that…
Fabio Bonfante
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Linux Cannot change tx-checksumming

On a Linux 3.2 kernel: Linux 3.2.0-4-686-pae #1 SMP Debian 3.2.46-1+deb7u1 i686 GNU/Linux on VmWare, i get checksum errors on ipv6 tcp packets. So I can ping6, but not connect by ipv6 to ssh, smtp, html etc. I believe, according to…
Lenne
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Make a bridge with two ports behave like a veth pair

I have a linux bridge with two ports, namely p0 and p1, and I would like to modify the bridge behavior so that every frame showing up in one port is relayed to the other port and viceversa, i.e. the equivalent of what a veth pair would do. Note: I…
Dani Camps
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12.04 Migration Process time delay

We have an issue in our server that is the migration process in taking time and also the load in the server is getting high due to that. No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04.3 LTS Release: …
Manoj Shenoy
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forcing linux kernel 3 to recognize cdrom as hdX

I have a problem with older version of anaconda linux installer. I have upgraded kernel in my distro, however, when this anaconda boot with this 3.4.52 kernel, can NOT find cdrom. As far as I understand, this is because the new kernel recognize cd…
seaquest
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Debian squeeze kernel update under Security Updates

Can someone explain what squeeze1 and squeeze3 designate at the end of a kernel name? For instance 2.6.32-48squeeze3 is showing up under Security Updates in Aptitude.
Jas Adams
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Linux not freeing the file buffer when we execute rm or > (redirection) operator

I have one router which has embedded-linux with kernel version 2.4.22 running on it. I know its very old version but i have to deal with it. Please take a look at the free command output when i run it on my box [8300002902-3] Debug> free …
Ankit Billaiya
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understanding ip route show command on linux

I have a Windows 7 PC as host.The network details of my Windows PC are as follows. IP ADDRESS - 192.168.1.70 DEFAULT GATEWAY - 192.168.1.254 I have installed Virtual Box on Windows 7 and I have an Ubuntu 12.04 Virtual…
liv2hak
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