Adding initial iSCSI boot support.

diff --git a/docs/parameters.txt b/docs/parameters.txt
index a9ef77c..1887608 100644 (file)
--- a/docs/parameters.txt
+++ b/docs/parameters.txt
@@ -16,6 +16,7 @@ live userfullname=USERFULLNAME
 live integrity-check
 live ip=[CLIENT_IP]:[SERVER_IP]:[GATEWAY_IP]:[NETMASK]:[HOSTNAME]:[DEVICE]:[AUTOCONF]  [,[CLIENT_IP]:[SERVER_IP]:[GATEWAY_IP]:[NETMASK]:[HOSTNAME]:[DEVICE]:[AUTOCONF]]*
 live ip[=frommedia]
+live iscsi=target-ip[,target-port];target-name
 live {keyb|kbd-chooser/method}=KEYBOARD
 live {klayout|console-setup/layoutcode}=LAYOUT
 live {kvariant|console-setup/variantcode}=VARIANT

diff --git a/hooks/live b/hooks/live
index adadab3..cba7120 100755 (executable)
--- a/hooks/live
+++ b/hooks/live
@@ -204,3 +204,12 @@ if [ -x /usr/bin/curlftpfs ]
 then
        copy_exec /usr/bin/curlftpfs /bin
 fi
+
+# iSCSI
+if [ -x /usr/sbin/iscsistart ]
+then
+    copy_exec /usr/sbin/iscsistart /bin
+    #manual_add_modules ib_iser
+    manual_add_modules iscsi_tcp
+    manual_add_modules crc32c
+fi

diff --git a/scripts/live b/scripts/live
index 7ee3e7f..2e40b45 100755 (executable)
--- a/scripts/live
+++ b/scripts/live
@@ -122,6 +122,19 @@ Arguments ()
                        httpfs=*)
                                HTTPFS="${ARGUMENT#httpfs=}"
                                export HTTPFS
+                                ;;
+
+                       iscsi=*)
+                               ISCSI="${ARGUMENT#iscsi=}"
+                               #ip:port - separated by ;
+                               ISCSI_PORTAL="${ISCSI%;*}"
+                               if echo "${ISCSI_PORTAL}" | grep -q , ; then
+                                       ISCSI_SERVER="${ISCSI_PORTAL%,*}"
+                                       ISCSI_PORT="${ISCSI_PORTAL#*,}"
+                               fi
+                               #target name
+                               ISCSI_TARGET="${ISCSI#*;}"
+                               export ISCSI ISCSI_PORTAL ISCSI_TARGET ISCSI_SERVER ISCSI_PORT
                                ;;
 
                        isofrom=*|fromiso=*)
@@ -589,7 +602,7 @@ copy_live_to ()
        return 0
 }
 
-do_netmount ()
+do_netsetup ()
 {
        modprobe -q af_packet # For DHCP
 
@@ -653,6 +666,11 @@ do_netmount ()
        [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
        export HOSTNAME
 
+       if [ -n "${DEVICE}" ]
+       then
+               HWADDR="$(cat /sys/class/net/${DEVICE}/address)"
+       fi
+
        # Check if we have a network device at all
        if ! ls /sys/class/net/"$DEVICE" > /dev/null 2>&1 && \
           ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
@@ -662,6 +680,11 @@ do_netmount ()
        then
                panic "No supported network device found, maybe a non-mainline driver is required."
        fi
+}
+
+do_netmount()
+{
+       do_netsetup
 
        if [ "${NFSROOT}" = "auto" ]
        then
@@ -697,6 +720,54 @@ do_netmount ()
        return ${rc}
 }
 
+do_iscsi()
+{
+       do_netsetup
+       #modprobe ib_iser
+       modprobe iscsi_tcp
+       local debugopt=""
+       [ "${DEBUG}" == "Yes" ] && debugopt="-d 8"
+       #FIXME this name is supposed to be unique - some date + ifconfig hash?
+       ISCSI_INITIATORNAME="iqn.1993-08.org.debian.live:01:$(echo "${HWADDR}" | sed -e s/://g)"
+        export ISCSI_INITIATORNAME
+       if [ -n "${ISCSI_SERVER}" ] ; then
+               iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_SERVER}" -p "${ISCSI_PORT}"
+       else
+               iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_PORTAL}" -p 3260
+       fi
+       if [ $? != 0 ]
+       then
+               panic "Failed to log into iscsi target"
+       fi
+       local host="$(ls -d /sys/class/scsi_host/host*/device/iscsi_host:host* \
+                           /sys/class/scsi_host/host*/device/iscsi_host/host* | sed -e 's:/device.*::' -e 's:.*host::')"
+       if [ -n "${host}" ]
+       then
+               local devices=""
+               local i=0
+               while [ -z "${devices}" -a $i -lt 60 ]
+               do
+                       sleep 1
+                       devices="$(ls -d /sys/class/scsi_device/${host}*/device/block:* \
+                                        /sys/class/scsi_device/${host}*/device/block/* | sed -e 's!.*[:/]!!')"
+                       i=$(expr $i + 1)
+                       echo -ne $i\\r
+               done
+               for dev in $devices
+               do
+                       if check_dev "null" "/dev/$dev"
+                       then
+                               return 0;
+                       fi
+               done
+               panic "Failed to locate a live device on iSCSI devices (tried: $devices)."
+       else
+               panic "Failed to locate iSCSI host in /sys"
+       fi
+       NETBOOT="iscsi"
+       export NETBOOT
+}
+
 do_httpmount ()
 {
        rc=1
@@ -1653,7 +1724,10 @@ mountroot ()
                        panic "Unable to find a live file system on the network"
                fi
        else
-               if [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
+               if [ -n "${ISCSI_PORTAL}" ]
+               then
+                       do_iscsi && livefs_root="${mountpoint}"
+               elif [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
                then
                        # Do a local boot from hd
                        livefs_root=${ROOT}