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Diffstat (limited to 'metadata/news/2013-03-29-udev-upgrade/2013-03-29-udev-upgrade.en.txt')
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diff --git a/metadata/news/2013-03-29-udev-upgrade/2013-03-29-udev-upgrade.en.txt b/metadata/news/2013-03-29-udev-upgrade/2013-03-29-udev-upgrade.en.txt deleted file mode 100644 index 2816d067437f..000000000000 --- a/metadata/news/2013-03-29-udev-upgrade/2013-03-29-udev-upgrade.en.txt +++ /dev/null @@ -1,102 +0,0 @@ -Title: Upgrading udev to version >=200 -Author: Samuli Suominen <ssuominen@gentoo.org> -Content-Type: text/plain -Posted: 2013-03-29 -Revision: 2 -News-Item-Format: 1.0 -Display-If-Installed: <sys-fs/udev-201 - -This replaces the earlier news item about the udev 197 upgrade and -describes the predictable network interface names in more detail. - -If you skip anything in this news item, your system will not be -bootable, or your networking will be down, or both. - -Pay attention also to every message printed by emerge of sys-fs/udev -and sys-fs/udev-init-scripts as this news item may not be complete. - -1. udev-postmount init script: - -Remove the udev-postmount init script from your runlevels. - -2. devtmpfs support: - -You need at least version 2.6.32 of the kernel for devtmpfs -functionality. Once you have this, make sure CONFIG_DEVTMPFS=y is set -in the kernel configuration. See the gentoo udev guide for the option in -make menuconfig [1]. - -If you have a line for /dev in /etc/fstab, make sure it is configured -for file system type devtmpfs (not tmpfs or any other type). Also, you -can remove this line if you prefer, since devtmpfs is mounted -automatically. - -3. Old interface naming rules: - -If the system still has old network interface renaming rules in -/etc/udev/rules.d, like 70-persistent-net.rules, those will need -to be either modified or removed. - -If you choose to modify them, you must use free namespace (like net* -or internet*) instead of kernel namespace (like eth* or wlan*) -because in-place renaming has been deprecated, see small -documentation of it if you like[2]. - -The file 70-persistent-net.rules, like the 70-persistent-cd.rules -should be removed, so if you modify, rename the file also to something -else like 70-my-network.rules to silence the deprecation warning coming -from the end of the sys-fs/udev emerge. - -This is the old format with reserved namespace: - -SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="xx:xx:xx:xx:xx:xx", NAME="eth0" -SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="yy:yy:yy:yy:yy:yy", NAME="eth1" - -This is the new format with free namespace: - -SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="xx:xx:xx:xx:xx:xx", NAME="net0" -SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="yy:yy:yy:yy:yy:yy", NAME="net1" - -4. predictable network interface names: - -If /etc/udev/rules.d/80-net-name-slot.rules is an empty file or a -symlink to /dev/null, the new names will be disabled and the kernel will -do all the interface naming, and the resulting names may vary by kernel -configuration, hardware configuration and kernel version. - -Also, the forementioned old 70-persistent-net.rules might interfere with -the new predictable interface names. - -You can get attributes of your network interfaces using a command like -the following (replace eth0 with the name of the appropriate interface): - -# udevadm test-builtin net_id /sys/class/net/eth0 2> /dev/null - -You can copy /lib/udev/rules.d/80-net-name-slot.rules to -/etc/udev/rules.d and specify the attributes and in which order -they will be used for naming. See upstream wiki[3] for detailed list -of options. - -You can prepare the system for the new names before booting for example -by renaming /etc/init.d/net.* symlinks, editing /etc/conf.d/net, etc. - -The feature can also be completely disabled using net.ifnames=0 on the -kernel command line. - -If you only have one interface card, you don't necessarily have much -use for this feature as the name almost always stays at eth0, you can -easily disable it using forementioned methods. - -This feature can also replace the functionality of sys-apps/biosdevname, -but you can still keep using it if you want. - -In a normal new installation there are no files in /etc/udev/rules.d -and if you haven't edited any files you have in there, you should most -likely backup and delete them all if they don't belong to any packages. - -The official wiki has a dedicated page for udev upgrade notes[4]. - -[1] http://www.gentoo.org/doc/en/udev-guide.xml -[2] http://www.kernel.org/doc/htmldocs/device-drivers/API-device-rename.html -[3] http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames -[4] http://wiki.gentoo.org/wiki/Udev/upgrade |