Description of problem:

I have a volume built of 3 different md's, from 4 drives (2 are 1TB drives, 2 are 2TB drives)

two md's are raid1, and then these used to build a raid0 array.

upon boot, Fedora15 finds the two raid1's, but does not do the final assembly of the raid0 from the raid1's.

Using raid10 in the kernel results in wasted space, for the 2tb drives are not fully utilized.

Version-Release number of selected component (if applicable):


How reproducible:

Build 3 raid partitions, make the 3rd dependent on the first
two being properly built.


Steps to Reproduce:
1. Create a raid1 md, create a second raid1 md, then create a raid0 md from md0 & md1.
2. Reboot.
3. System errors out.
  
Actual results:

system errors out.

Expected results:

system should build correct volume.

Additional info:

edit /lib/systemd/fedora-storage-init and add:

# Start any nest MD RAID arrays.
[ -f /etc/mdadm.conf -a -x /sbin/mdadm ] && /sbin/mdadm -As --auto=yes --run

before:

# Start any MD RAID arrays that haven't been started yet
[ -r /proc/mdstat ] && [ -r /dev/md/md-device-map ] && /sbin/mdadm -IRs

if [ -x /sbin/lvm ]; then
        action $"Setting up Logical Volume Management:" /sbin/lvm vgchange -a y --sysinit
fi

fixes the problem; ie:

[root@tank systemd]# pwd
/lib/systemd
[root@tank systemd]# more fedora-storage-init 
#!/bin/bash
#
# Storage initialization

. /etc/init.d/functions

[ -z "${cmdline}" ] && cmdline=$(cat /proc/cmdline)

if ! strstr "$cmdline" nompath && [ -f /etc/multipath.conf ] && \
                [ -x /sbin/multipath ]; then
        modprobe dm-multipath > /dev/null 2>&1
        /sbin/multipath -v 0
        if [ -x /sbin/kpartx ]; then
                /sbin/dmsetup ls --target multipath --exec "/sbin/kpartx -a -p p" >/dev/null
        fi
fi

if ! strstr "$cmdline" nodmraid && [ -x /sbin/dmraid ]; then
        modprobe dm-mirror >/dev/null 2>&1
        dmraidsets=$(LC_ALL=C /sbin/dmraid -s -c -i)
        if [ "$?" = "0" ]; then
                for dmname in $dmraidsets; do
                        if [[ "$dmname" == isw_* ]] && \
                           ! strstr "$cmdline" noiswmd; then
                                continue
                        fi
                        /sbin/dmraid -ay -i --rm_partitions -p "$dmname" >/dev/null 2>&1
                        /sbin/kpartx -a -p p "/dev/mapper/$dmname"
                done
        fi
fi

[ -f /etc/mdadm.conf -a -x /sbin/mdadm ] && /sbin/mdadm -As --auto=yes --run
# Start any MD RAID arrays that haven't been started yet
[ -r /proc/mdstat ] && [ -r /dev/md/md-device-map ] && /sbin/mdadm -IRs

if [ -x /sbin/lvm ]; then
        action $"Setting up Logical Volume Management:" /sbin/lvm vgchange -a y --sysinit
fi