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authorUlrich Müller <ulm@gentoo.org>2019-05-31 11:40:13 +0200
committerUlrich Müller <ulm@gentoo.org>2019-05-31 11:40:13 +0200
commit8c82e8e72bf9157172b8a153ac8927c9f06500fd (patch)
tree160645b89bf4fc0814e1e8ea2c098295beaeebbe /2013-03-29-udev-upgrade/2013-03-29-udev-upgrade.en.txt
parent2019-05-23-accept_license: New revision. (diff)
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Remove obsolete news items.
As announced: https://archives.gentoo.org/gentoo-dev/message/ac6c9e00ca39253b092a38d1759c6fea Signed-off-by: Ulrich Müller <ulm@gentoo.org>
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-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