This bug is related to bug #335763. When updating to >=sys-fs/udev-151-r4 using an older kernel (for example 2.6.30 build with genkernel) udev complains about kernel options CONFIG_SYSFS_DEPRECATED(_V2) being set, but it continues the update. This results in a system not being able to boot anymore since many entries in /dev are missing (in my case /dev/sd*). Because this may be critical especially on headless maschines udev should cancel the update until a kernel is used that has been build without these options. An environment variable could be use to continue if the user knows what he's doing. Reproducible: Always Steps to Reproduce: 1. Update from udev-149 to udev-151-r4 using a kernel build with CONFIG_SYSFS_DEPRECATED 2. Don't pay much attention to udev's warning 3. Carelessly reboot the system before building a new kernel Actual Results: The system becomes nearly unusable as many device entries like /dev/sd* are missing. Expected Results: udev should have stopped emerge in step 1. emerge --info from within a chroot environment using a rescue system: Portage 2.1.8.3 (hardened/linux/amd64/10.0, gcc-4.3.4, glibc-2.11.2-r0, 2.6.33-grml64 x86_64) ================================================================= System uname: Linux-2.6.33-grml64-x86_64-QEMU_Virtual_CPU_version_0.10.0-with-gentoo-1.12.13 Timestamp of tree: Fri, 03 Sep 2010 03:00:01 +0000 app-shells/bash: 4.0_p37 dev-java/java-config: 2.1.9-r2 dev-lang/python: 2.5.4-r3, 2.6.5-r3, 3.1.2-r4 sys-apps/baselayout: 1.12.13 sys-apps/sandbox: 1.6-r2 sys-devel/autoconf: 2.65 sys-devel/automake: 1.7.9-r1, 1.9.6-r2, 1.10.2, 1.11.1 sys-devel/binutils: 2.20.1-r1 sys-devel/gcc: 3.4.6-r2, 4.1.2, 4.3.4 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6b sys-devel/make: 3.81-r2 virtual/os-headers: 2.6.30-r1 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=athlon64" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -pipe -march=athlon64" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests distlocks fixpackages news parallel-fetch protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch usersandbox" GENTOO_MIRRORS="ftp://mirror.netcologne.de/gentoo/" LANG="de_DE.UTF-8" LC_ALL="de_DE.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="de" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="acl amd64 bash-completion berkdb bzip2 cli cracklib crypt cxx dri gdbm gpm hardened iconv justify mmx modules mudflap multilib ncurses nls nptl nptlonly openmp pam pcre perl pic pppd python readline reflection session spl sse sse2 ssl sysfs tcpd unicode urandom xorg zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias proxy proxy_http" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="de" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga neomagic nouveau nv r128 radeon savage sis tdfx trident vesa via vmware voodoo" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
udev-151-r4 and others have this: # required kernel options CONFIG_CHECK="~INOTIFY_USER ~SIGNALFD ~!SYSFS_DEPRECATED ~!SYSFS_DEPRECATED_V2 ~!IDE ~BLK_DEV_BSG" so nothing left to do here
