On Fri, 16 Aug 2002 08:02:38 -0700, John P. Looney wrote: > I've been battling with getting RAID1 working on the root filesystem of a > Cobalt raq3 (running RedHat 7.3) for about a week. > > The current problem is that the Raq3 PROM will not mount a root > filesystem different to the one that it loads the kernel from initially. > > The PROM seems to use a variable "set_boot_dev" to get a partition name. > It mounts this partition, gets a file /boot/vmlinux.gz from it, unzips it, > and runs. > > I have hda2 (my original root partition) and hdg1 parts of a mirror setup > as /dev/md1, which is to be mounted as /. I used the "failed-disk" > directive to create md1 as / - however, after booting, md1 is mounted on / > fine, but I cannot add hda2 to this with raidhotadd: > > [root@midir root]# raidhotadd /dev/md1 /dev/hda2 > md: can not import hda2, has active inodes! > md: error, md_import_device() returned -16 > /dev/md1: can not hot-add disk: invalid argument. > > Does anyone have any idea what could be happening, or how I could resolve > this ? Oops, that got sent before I was finished writing it, I have a couple more questions.. 1/ where did hdg come from? Is there a 3rd party IDE controller in the PCI slot? (some RaQ3s had only 1 IDE connector populated..) If it is, then you might run into problems because most likely the ROM kernel does not have a driver for it. 2/ the ext3 filesystem might also be confusing the ROM kernel. If you want to try one that will recognize it look here: ftp://ftp-eng.cobalt.com/pub/users/duncan/kernel/rom/2.9.37-ext3.rom This will also give you better control over the boot process, adding a "set_lparams" function to the boot menu that specifies the parameters specific to the ROM kernel. ("set_params' will pass parameters to the kernel that is loaded from disk) This will let you set a different root device to grab a kernel from. It also has some more built-in PCI IDE drivers, so it might help with problem #1. (if it is a problem...) -duncan - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
