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| − | {{Virtuozzo}}
| + | This article describes how to build an kernel module which is not included into the stock Virtuozzo kernel.<br> |
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| − | This article describes how to build a kernel module which is not included into the stock Virtuozzo kernel.<br> | |
| | (This article applies to Virtuozzo 7) | | (This article applies to Virtuozzo 7) |
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| | == Building a kernel module using Dynamic Kernel Module Support (DKMS) == | | == Building a kernel module using Dynamic Kernel Module Support (DKMS) == |
| − | (draft : this is a small example of adding back the support of an old network card just after the installation of Virtuozzo 7.0.1 on a bare metal server)
| + | TBD, you are welcome to put the description here. :) |
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| − | First, you need to figure out which kernel source files are needed to build your modules. Here, what we needed wasn't in the source package https://download.openvz.org/virtuozzo/releases/openvz-7.0.1-554/source/SRPMS/v/vzkernel-3.10.0-327.36.1.vz7.18.7.src.rpm but we were lucky and needed only one file : <tt>3c59x.c</tt> from https://src.openvz.org/projects/OVZ/repos/vzkernel/browse/drivers/net/ethernet/3com (beware of branch and/or tag).
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| − | Note : if network is unavailable on the target host, download these packets (lookup /etc/yum.repos.d/ for the EPEL and Virtuozzo URL). Adapt the version numbers to your release :
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| − | cpp-4.8.5-11.vl7.x86_64
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| − | dkms-2.3-2.20161202gitde1dca9.vl7.noarch
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| − | gcc-4.8.5-11.vl7.x86_64
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| − | U glibc-2.17-157.vl7.2.x86_64
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| − | U glibc-common-2.17-157.vl7.2.x86_64
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| − | glibc-devel-2.17-157.vl7.2.x86_64
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| − | glibc-headers-2.17-157.vl7.2.x86_64
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| − | U libgcc-4.8.5-11.vl7.x86_64
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| − | U libgomp-4.8.5-11.vl7.x86_64
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| − | libmpc-1.0.1-3.vl7.x86_64
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| − | mpfr-3.1.1-4.vl7.x86_64
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| − | vzkernel-devel-3.10.0-327.36.1.vz7.18.7.x86_64
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| − | vzkernel-headers-3.10.0-327.36.1.vz7.18.7.x86_64
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| − | (U = already present but seems to require an update)
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| − | The rest of this doc is heavily inspired from https://wiki.centos.org/HowTos/BuildingKernelModules
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| − | Install dkms and vzkernel-devel.
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| − | Create a <tt>/usr/src</tt> subdirectory named like this <tt>modulename-buildversion</tt> and place your file(s) there :
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| − | mkdir /usr/src/3c59x-0.1
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| − | cd /usr/src/3c59x-0.1
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| − | cp 3c59x.c /usr/src/3c59x-0.1
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| − | echo "obj-m += 3c59x.o" >/usr/src/3c59x-0.1/Makefile
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| − | | |
| − | Create the /usr/src/3c59x-0.1/dkms.conf file :
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| − | PACKAGE_NAME="3c59x"
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| − | PACKAGE_VERSION="0.1"
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| − | BUILT_MODULE_NAME[0]="3c59x"
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| − | DEST_MODULE_LOCATION[0]="/kernel/drivers/net/ethernet/3com/"
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| − | AUTOINSTALL="yes"
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| − | | |
| − | Then add dkms support :
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| − | dkms add -m 3c59x -v 0.1
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| − | dkms build -m 3c59x -v 0.1
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| − | dkms install -m 3c59x -v 0.1
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| − | For each kernel update, dkms should rebuild the module for you.
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| − | There is an option in dkms to build a RPM and maybe allow to do all that work remotely, but not tested, sorry.
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| | == Building a kernel module rpm package (kmod) == | | == Building a kernel module rpm package (kmod) == |
