4632 2013-06-10 17:18:38 +0000 udev 182 init script should mount devtmpfs instead tmpfs 2013-07-08 10:41:05 +0000 1 1 7 Build System, Metadata & Runtime OE-Core core unspecified All Multiple RESOLVED FIXED Medium major 1.5 M2 1 alex.olson sgw meta.mr.watcher meta.watcher --- --- --- oldest_to_newest 33729 0 1255 alex.olson 2013-06-10 17:18:38 +0000 Created attachment 1255 suggested fix Since udev 172, the 'mknod' logic was removed from udev. This means /dev is now required to be a devtmpfs filesystem (maintained by the kernel). If the root filesystem is a ramdisk, the kernel's auto-mount of /dev doesn't activate since there is no rootfs to actually mount... The bug causes an unusuable system as /dev doesn't contain even basic nodes required to even get a login prompt. The Yocto udev/init script mounts tmpfs if it does not detect tmpfs or devtmpfs mounted at /dev. This appears to be outdated logic that is no longer correct. I believe the Yocto udev init script should be checking and mounting only 'devtmpfs' on dev. (But I am not a udev expert). See attached patch for a suggestion. 33737 1 sgw 2013-06-10 22:58:39 +0000 This looks like a good patch, if you would please submit a proper patch to list, please do so, otherwise I can put this patch in. 34138 2 alex.olson 2013-06-25 20:15:36 +0000 (In reply to comment #1) > This looks like a good patch, if you would please submit a proper patch to > list, please do so, otherwise I can put this patch in. I submitted it today to the OE-core list and will monitor the thread. http://lists.openembedded.org/pipermail/openembedded-core/2013-June/080311.html 34231 3 sgw 2013-06-28 18:17:15 +0000 Systemd-udev http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=f744edc0b8752b20c2a0335aa67312bc3b953507 sysvinit-udev http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=d85a997f2c0909788712b9985f5fb93dce880270 Thanks to Alex! 1255 2013-06-10 17:18:38 +0000 2013-06-10 17:18:38 +0000 suggested fix udev-devtmpfs.patch text/plain 625 alex.olson Iy0tLSB1ZGV2L2luaXQub3JpZ2luYWwgMjAxMy0wNS0xOCAxNDozODowOS4wMDAwMDAwMDAgLTA1 MDANCiMrKysgdWRldi9pbml0ICAyMDEzLTA2LTA2IDE0OjIxOjE1Ljg1OTkxODAyMyAtMDUwMA0K I0BAIC00NCw4ICs0NCw4IEBADQojICAgICAgICAgaGFsdA0KIyAgICAgZmkNCiMgICAgICMgbW91 bnQgdGhlIHRtcGZzIG9uIC9kZXYsIGlmIG5vdCBhbHJlYWR5IGRvbmUNCiMtICAgIExBTkc9QyBh d2sgJyQyID09ICIvZGV2IiAmJiAoJDMgPT0gInRtcGZzIiB8fCAkMyA9PSAiZGV2dG1wZnMiKSB7 IGV4aXQgMSB9JyAvcHJvYy9tb3VudHMgJiYgew0KIy0gICAgICAgICAgICBtb3VudCAtbiAtbyBt b2RlPTA3NTUgLXQgdG1wZnMgbm9uZSAiL2RldiINCiMrICAgIExBTkc9QyBhd2sgJyQyID09ICIv ZGV2IiAmJiAoJDMgPT0gImRldnRtcGZzIikgeyBleGl0IDEgfScgL3Byb2MvbW91bnRzICYmIHsN CiMrICAgICAgICAgICAgbW91bnQgLW4gLW8gbW9kZT0wNzU1IC10IGRldnRtcGZzIG5vbmUgIi9k ZXYiDQojICAgICB9DQojICAgICBbIC1lIC9kZXYvcHRzIF0gfHwgbWtkaXIgLW0gMDc1NSAvZGV2 L3B0cw0KIyAgICAgWyAtZSAvZGV2L3NobSBdIHx8IG1rZGlyIC1tIDE3NzcgL2Rldi9zaG0NCg==