[Ovirt-devel] [PATCH node 1/3] Enables ability to have a common shared root

[Joey Boggs]

---
 scripts/ovirt-config-boot    |   13 +++++++-
 scripts/ovirt-config-storage |   73 +++++++++++++++++++++++++----------------
 2 files changed, 56 insertions(+), 30 deletions(-)

diff --git a/scripts/ovirt-config-boot b/scripts/ovirt-config-boot
index d545878..8cc127b 100755
--- a/scripts/ovirt-config-boot
+++ b/scripts/ovirt-config-boot
@@ -29,6 +29,12 @@ ovirt_boot_setup() {
     local disk2
     local partN=-1
     log "installing the image."
+
+    if [ "$OVIRT_ROOT_INSTALL" == "n" ]; then
+        log "done."
+        return
+    fi
+
     local found_boot=false
     if findfs LABEL=Boot 2>&1 >/dev/null ; then
         found_boot=true
@@ -212,7 +218,12 @@ if [ -z "$doreboot" ]; then
 fi
 
 start_log
-ovirt_boot_setup "$live" "$bootparams"
+if [ "$OVIRT_ROOT_INSTALL" =="n" ]; then
+    log "done."
+    return
+else
+    ovirt_boot_setup "$live" "$bootparams"
+fi
 rc=$?
 if [ $rc -eq 0 -a "$doreboot" = "yes" ]; then
     disable_firstboot
diff --git a/scripts/ovirt-config-storage b/scripts/ovirt-config-storage
index 8d59a6b..aec3447 100755
--- a/scripts/ovirt-config-storage
+++ b/scripts/ovirt-config-storage
@@ -357,6 +357,22 @@ do_configure()
         printf "\n\nPlease select the disk to use for the Root.\n\n"
         ROOTDRIVE=$(get_dev_name) || return 0
         get_drive_size "$ROOTDRIVE" ROOTDRIVESPACE
+        if ask_yes_or_no "Will Root be shared with other nodes ([Y]es/[N]o)?"; then
+            OVIRT_SHARED_ROOT="y"
+            if ask_yes_or_no "Partition and install Root?"; then
+                OVIRT_ROOT_INSTALL="y"
+            else
+                OVIRT_ROOT_INSTALL="n"
+            fi
+        else
+            OVIRT_SHARED_ROOT="n"
+            OVIRT_ROOT_INSTALL="y"
+        fi
+
+    augtool <<EOF
+        set /files$OVIRT_DEFAULTS/OVIRT_SHARED_ROOT $OVIRT_SHARED_ROOT
+        set /files$OVIRT_DEFAULTS/OVIRT_ROOT_INSTALL $OVIRT_ROOT_INSTALL
+EOF
 
         printf "\n\nPlease select the disk to use for the HostVG.\n\n"
         HOSTVGDRIVE=$(get_dev_name) || return 0
@@ -402,6 +418,8 @@ do_configure()
     if [ "$OVIRT_ISCSI_ENABLED" == "y" ]; then
         partlist="boot" # swap root config logging data"
         local space_left=$BOOTDRIVESPACE
+    elif [ "$OVIRT_ROOT_INSTALL" == "n" ]; then
+        partlist="swap config logging data"
     else
         partlist="swap root config logging data"
     fi
@@ -635,37 +653,32 @@ perform_partitioning()
         return
     fi
 
-    log "Starting partitioning of $ROOTDRIVE"
-    log "Partitioning drive: $ROOTDRIVE"
- # FIXME: save a backup copy, just in case?
-    log "Wiping old boot sector"
-    dd if=/dev/zero of=$ROOTDRIVE bs=1024K count=1
-    reread_partitions $ROOTDRIVE
-    partprobe -s $ROOTDRIVE
-    log "Labeling Drive: $ROOTDRIVE"
-    parted $ROOTDRIVE -s "mklabel ${LABEL_TYPE}"
+    if [ "$OVIRT_ROOT_INSTALL" == "y" ]; then
+        log "Starting partitioning of $ROOTDRIVE"
+        log "Partitioning drive: $ROOTDRIVE"
+     # FIXME: save a backup copy, just in case?
+        log "Wiping old boot sector"
+        dd if=/dev/zero of=$ROOTDRIVE bs=1024K count=1
+        blockdev --rereadpt $ROOTDRIVE
+        partprobe -s $ROOTDRIVE
+        log "Labeling Drive: $ROOTDRIVE"
+        parted $ROOTDRIVE -s "mklabel ${LABEL_TYPE}"
+        log "Creating Root and RootBackup Partitions"
+        let RootBackup_end=${ROOT_SIZE}*2
+        parted $ROOTDRIVE -s "mkpart primary ext2 0M ${ROOT_SIZE}M"
+        parted $ROOTDRIVE -s "mkpart primary ext2 ${ROOT_SIZE}M ${RootBackup_end}M"
+        # sleep to ensure filesystems are created before continuing
+        sleep 10
+        mke2fs ${ROOTDRIVE}1 -L Root
+        mke2fs ${ROOTDRIVE}2 -L RootBackup
+        tune2fs -c 0 -i 0 ${ROOTDRIVE}1
+        tune2fs -c 0 -i 0 ${ROOTDRIVE}2
+    fi
 
     if [ $ROOTDRIVE != $HOSTVGDRIVE ]; then
         log "Labeling Drive: $HOSTVGDRIVE"
         parted $HOSTVGDRIVE -s "mklabel ${LABEL_TYPE}"
     fi
-    log "Creating Root and RootBackup Partitions"
-    let RootBackup_end=${ROOT_SIZE}*2
-    parted $ROOTDRIVE -s "mkpart primary ext2 0M ${ROOT_SIZE}M"
-    parted $ROOTDRIVE -s "mkpart primary ext2 ${ROOT_SIZE}M ${RootBackup_end}M"
-    reread_partitions $ROOTDRIVE
-    partroot=${ROOTDRIVE}1
-    partrootbackup=${ROOTDRIVE}2
-    if [ ! -e $partroot ]; then
-        partroot=${ROOTDRIVE}p1
-        partrootbackup=${ROOTDRIVE}p2
-    fi
-    # sleep to ensure filesystems are created before continuing
-    sleep 10
-    mke2fs ${partroot} -L Root
-    mke2fs ${partrootbackup} -L RootBackup
-    tune2fs -c 0 -i 0 ${partroot}
-    tune2fs -c 0 -i 0 ${partrootbackup}
     log "Creating LVM partition"
 
     if [ $ROOTDRIVE == $HOSTVGDRIVE ]; then
@@ -682,9 +695,11 @@ perform_partitioning()
     reread_partitions $HOSTVGDRIVE
 
     # sync GPT to the legacy MBR partitions
-    if [ "gpt" == "$LABEL_TYPE" ]; then
-        log "Running gptsync to create legacy mbr"
-        gptsync $ROOTDRIVE
+    if [ "$OVIRT_ROOT_INSTALL" == "y" ]; then
+        if [ "gpt" == "$LABEL_TYPE" ]; then
+            log "Running gptsync to create legacy mbr"
+            gptsync $ROOTDRIVE
+        fi
     fi
 
     partpv=${HOSTVGDRIVE}${hostvgpart}
-- 
1.6.6.1