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On Wed, 8 Aug 2007 10:37:59 +0200, Cornelia Huck <cornelia.huck@de.ibm.com> wrote:OK, it seems that it is udevstart that has problems. (Normal udev operation seems fine; when I trigger uevents manually, the device nodes are created.) I ran strace on udevstart and found that it skipped /sys/block/dasd/dasda1 (interestingly, /dev/dasda was created after I ran udevstart manually; no idea why this didn't happen on boot. Further manual runs don't create /dev/dasda1, however.) ls doesn't produce different output on the two kernels. Here is some excerpt from the strace run with the broken kernel: open("/sys/block", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 3 fstat64(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 getdents64(3, /* 28 entries */, 4096) = 800 _llseek(3, 3414, [3414], SEEK_SET) = 0 stat64("/sys/block/dasda/dev", {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0 open("/sys/block/dasda", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 4 fstat64(4, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 fcntl64(4, F_SETFD, FD_CLOEXEC) = 0 getdents64(4, /* 15 entries */, 4096) = 440 _llseek(4, 3079, [3079], SEEK_SET) = 0 stat64("/sys/block/dasda/uevent/dev", 0x7fb8c3f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/dev/dev", 0x7fb8c3f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/range/dev", 0x7fb8c3f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/removable/dev", 0x7fb8c3f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/size/dev", 0x7fb8c3f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/stat/dev", 0x7fb8c3f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/capability/dev", 0x7fb8c3f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/device/dev", 0x7fb8c3f8) = -1 ENOENT (No such file or d irectory) stat64("/sys/block/dasda/subsystem/dev", 0x7fb8c3f8) = -1 ENOENT (No such file or directory) stat64("/sys/block/dasda/holders/dev", 0x7fb8c3f8) = -1 ENOENT (No such file or directory) stat64("/sys/block/dasda/slaves/dev", 0x7fb8c3f8) = -1 ENOENT (No such file or directory) stat64("/sys/block/dasda/queue/dev", 0x7fb8c3f8) = -1 ENOENT (No such file or directory) getdents64(4, /* 1 entries */, 4096) = 32 close(4) = 0 getdents64(3, /* 1 entries */, 4096) = 32 close(3) = 0 lstat64("/sys/block/dasda", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 lstat64("/sys/block/dasda/dev", {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0 stat64("/sys/block/dasda/dev", {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0 open("/sys/block/dasda/dev", O_RDONLY) = 3 read(3, "94:0\n", 4096) = 5 close(3) = 0 lstat64("/sys/block/dasda/device", {st_mode=S_IFLNK|0777, st_size=0, ...}) = 0 readlink("/sys/block/dasda/device", "../../devices/css0/0.0.0003/0.0.4e30", 256) = 36 lstat64("/sys/devices/css0/0.0.0003/0.0.4e30", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 lstat64("/sys/devices/css0/0.0.0003/0.0.4e30/bus", {st_mode=S_IFLNK|0777, st_siz e=0, ...}) = 0 readlink("/sys/devices/css0/0.0.0003/0.0.4e30/bus", "../../../../bus/ccw", 256) = 19 lstat64("/sys/devices/css0/0.0.0003/0.0.4e30/driver", {st_mode=S_IFLNK|0777, st_ size=0, ...}) = 0 readlink("/sys/devices/css0/0.0.0003/0.0.4e30/driver", "../../../../bus/ccw/driv ers/dasd-eckd", 256) = 37 open("/proc/filesystems", O_RDONLY|O_LARGEFILE) = 3 read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tb"..., 4095) = 259 close(3) = 0 stat64("/dev/dasda", 0x7fb8b738) = -1 ENOENT (No such file or directory) mknod("/dev/dasda", S_IFBLK|0640, makedev(94, 0)) = 0 chmod("/dev/dasda", 060640) = 0 chown("/dev/dasda", 0, 6) = 0 And here's with a working kernel: open("/sys/block", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 3 fstat64(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 getdents64(3, /* 27 entries */, 4096) = 768 stat64("/sys/block/dasda/dev", {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0 open("/sys/block/dasda", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 4 fstat64(4, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 fcntl64(4, F_SETFD, FD_CLOEXEC) = 0 getdents64(4, /* 15 entries */, 4096) = 440 stat64("/sys/block/dasda/dasda1/dev", {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0 stat64("/sys/block/dasda/queue/dev", 0x7f9004f8) = -1 ENOENT (No such file or directory) stat64("/sys/block/dasda/slaves/dev", 0x7f9004f8) = -1 ENOENT (No such file or directory) stat64("/sys/block/dasda/holders/dev", 0x7f9004f8) = -1 ENOENT (No such file or directory) stat64("/sys/block/dasda/subsystem/dev", 0x7f9004f8) = -1 ENOENT (No such file or directory) stat64("/sys/block/dasda/device/dev", 0x7f9004f8) = -1 ENOENT (No such file or directory) stat64("/sys/block/dasda/capability/dev", 0x7f9004f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/stat/dev", 0x7f9004f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/size/dev", 0x7f9004f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/removable/dev", 0x7f9004f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/range/dev", 0x7f9004f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/dev/dev", 0x7f9004f8) = -1 ENOTDIR (Not a directory) stat64("/sys/block/dasda/uevent/dev", 0x7f9004f8) = -1 ENOTDIR (Not a directory) getdents64(4, /* 0 entries */, 4096) = 0 close(4) = 0 ... lstat64("/sys/block/dasda", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 lstat64("/sys/block/dasda/dev", {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0 stat64("/sys/block/dasda/dev", {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0 open("/sys/block/dasda/dev", O_RDONLY) = 3 read(3, "94:0\n", 4096) = 5 close(3) = 0 lstat64("/sys/block/dasda/device", {st_mode=S_IFLNK|0777, st_size=0, ...}) = 0 readlink("/sys/block/dasda/device", "../../devices/css0/0.0.0003/0.0.4e30", 256) = 36 lstat64("/sys/devices/css0/0.0.0003/0.0.4e30", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 lstat64("/sys/devices/css0/0.0.0003/0.0.4e30/bus", {st_mode=S_IFLNK|0777, st_size=0, ...}) = 0 readlink("/sys/devices/css0/0.0.0003/0.0.4e30/bus", "../../../../bus/ccw", 256) = 19 lstat64("/sys/devices/css0/0.0.0003/0.0.4e30/driver", {st_mode=S_IFLNK|0777, st_size=0, ...}) = 0 readlink("/sys/devices/css0/0.0.0003/0.0.4e30/driver", "../../../../bus/ccw/drivers/dasd-eckd", 256) = 37 open("/proc/filesystems", O_RDONLY|O_LARGEFILE) = 3 read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tb"..., 4095) = 276 close(3) = 0 stat64("/dev/dasda", {st_mode=S_IFBLK|0640, st_rdev=makedev(94, 0), ...}) = 0 chmod("/dev/dasda", 060640) = 0 chown("/dev/dasda", 0, 6) = 0 ... lstat64("/sys/block/dasda/dasda1", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 lstat64("/sys/block/dasda/dasda1/dev", {st_mode=S_IFREG|0444, st_size=4096, ...} ) = 0 stat64("/sys/block/dasda/dasda1/dev", {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0 open("/sys/block/dasda/dasda1/dev", O_RDONLY) = 3 read(3, "94:1\n", 4096) = 5 close(3) = 0 lstat64("/sys/block/dasda", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 lstat64("/sys/block/dasda/device", {st_mode=S_IFLNK|0777, st_size=0, ...}) = 0 readlink("/sys/block/dasda/device", "../../devices/css0/0.0.0003/0.0.4e30", 256) = 36 lstat64("/sys/devices/css0/0.0.0003/0.0.4e30", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 lstat64("/sys/devices/css0/0.0.0003/0.0.4e30/bus", {st_mode=S_IFLNK|0777, st_size=0, ...}) = 0 readlink("/sys/devices/css0/0.0.0003/0.0.4e30/bus", "../../../../bus/ccw", 256) = 19 lstat64("/sys/devices/css0/0.0.0003/0.0.4e30/driver", {st_mode=S_IFLNK|0777, st_ size=0, ...}) = 0 readlink("/sys/devices/css0/0.0.0003/0.0.4e30/driver", "../../../../bus/ccw/drivers/dasd-eckd", 256) = 37 stat64("/dev/dasda1", {st_mode=S_IFBLK|0640, st_rdev=makedev(94, 1), ...}) = 0 chmod("/dev/dasda1", 060640) = 0 chown("/dev/dasda1", 0, 6) = 0 Ideas welcome... -
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