Get iscsi boot working (issue 13)

dracut/installkernel

@@ -7,3 +7,7 @@ instmods scsi_wait_scan
 
 # When booting from a block device, we need a local file system like ext4
 instmods ext4
+
+# iscsi requires scsi_mod
+# We don't include 'kernel-modules' so pull it in here.
+instmods sd_mod

dracut/xnfsroot.conf

@@ -1 +1 @@
-dracutmodules="nbd nfs network base xnfsroot"
+dracutmodules="iscsi nbd nfs network base xnfsroot"

rc/rc.nfsroot

@@ -49,7 +49,7 @@ fi
 if ! touch / 2>/dev/null; then
    mount -oremount,rw / 2>/dev/null
    if touch / 2>/dev/null; then
-       panic "NFS root file system is mounted ro but exported rw"
+       panic "root file system is mounted ro but exported rw"
    fi
 fi
 

rc/rc.nfsroot-zram

@@ -35,11 +35,22 @@ if [ -f $configfile ]; then
 fi
 prog=rc.nfsroot-zram
 
+find_root_dev () {
+   local a b c
+
+   while read a b c; do
+      if [ $b = "/" -a $a != "rootfs" ]; then
+         echo $a
+         break
+      fi
+   done </proc/mounts
+}
+
 if touch / 2>/dev/null; then
    echo "${prog}: root file system is read-write" >&2
    return 1 
 fi
-ROOTDEV=$(readlink /dev/root)
+ROOTDEV=$(find_root_dev)
 if [ -z "$ROOTDEV" -o ! -b "$ROOTDEV" ]; then
    echo "${prog}: root file system is not on a block device" >&2
    return 1