I recently obtained a P4 and have started building the kernel with SMP enabled (for hyper-threading). I have started noticing some sortof wierd race with mounting root with an Intel ICH5 ide controller... Normally doing a stat("/", &buf) gives me the correct st_rdev for my root device. But every few boots I find that st_rdev is instead set to the st_rdev of the last IDE device under /proc/ide that happens to be using the ide-disk driver.. Busybox has a find_real_root_device_name() function which depends upon stat("/") giving the correct st_rdev, and this bug causes it to do wierd things. So for example, when booting I see this: PCI: Enabling device 00:1f.1 (0005 -> 0007) ICH5: chipset revision 2 ICH5: not 100% native mode: will probe irqs later ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:DMA, hdb:DMA ide1: BM-DMA at 0xfc08-0xfc0f, BIOS settings: hdc:DMA, hdd:DMA hda: IC35L080AVVA07-0, ATA DISK drive hdb: WDC AC32500H, ATA DISK drive My root_fs is on /dev/hda2. But when running the debugger I see.... 38 if (stat("/", &rootStat) != 0) (gdb) (gdb) p rootStat.st_rdev $1 = 832 (gdb) p (832 >> 8) & 0xff $2 = 3 (gdb) p 832 & 0xff $3 = 64 Which works out to major 3, minor 64, or /dev/hdb!!! I've attempted to track down where such a problem could occur, but so far I've come up empty. -Erik -- Erik B. Andersen http://codepoet-consulting.com/ --This message was written using 73% post-consumer electrons--