Use a predictable ISO Volume Label (#732298)

New images find their root device by looking at the CDLABEL. Since pungi
is building ISO images separately from lorax, if it uses a different ISO
Volume Label we'll end up with unbootable images.

This changes the volume labels to match what pungi uses, so both should
boot OK.

share/efi.tmpl

@@ -36,7 +36,7 @@ ${make_efiboot("images/efidisk.img", include_kernel=True, disk=True)}
         replace @ROOT@ root=live:LABEL=ANACONDA ${eficonf}
     %else:
         ## NOTE: this needs to match the boot.iso label (see x86.tmpl)
-        replace @ROOT@ root=live:CDLABEL=${udev_escape(product.name)} ${eficonf}
+        replace @ROOT@ 'root=live:CDLABEL=${isolabel|udev}' ${eficonf}
     %endif
     %if efiarch == 'IA32':
         copy ${eficonf} ${EFIBOOTDIR}/BOOT.conf

share/ppc.tmpl

@@ -1,4 +1,4 @@
-<%page args="kernels, runtime_img, basearch, libdir, inroot, outroot, product"/>
+<%page args="kernels, runtime_img, basearch, libdir, inroot, outroot, product, isolabel"/>
 <%
 configdir="tmp/config_files"
 BOOTDIR="ppc"
@@ -68,14 +68,14 @@ mkdir etc
     install ${configdir}/yaboot.conf.3264 etc/yaboot.conf
     replace @PRODUCT@ ${product.name}      etc/yaboot.conf
     replace @VERSION@ ${product.version}   etc/yaboot.conf
-    replace @ROOT@ root=live:CDLABEL=PBOOT etc/yaboot.conf
+    replace @ROOT@ 'root=live:CDLABEL=${isolabel|udev}' etc/yaboot.conf
 %else:
     copy ${KERNELDIR}/yaboot.conf etc/yaboot.conf
 %endif
 
 runcmd mkisofs -o ${outroot}/images/boot.iso -chrp-boot -U \
         ${prepboot} -part -hfs -T -r -l -J \
-        -A "${product.name} ${product.version}" -sysid PPC -V PBOOT \
+        -A "${product.name} ${product.version}" -sysid PPC -V '${isolabel}' \
         -volset "${product.version}" -volset-size 1 -volset-seqno 1 \
         -hfs-volid ${product.version} -hfs-bless ${outroot}/${MACDIR} \
         -map ${inroot}/${configdir}/mapping \

share/sparc.tmpl

@@ -1,4 +1,4 @@
-<%page args="kernels, runtime_img, basearch, outroot, product"/>
+<%page args="kernels, runtime_img, basearch, outroot, product, isolabel"/>
 <%
 configdir="tmp/config_files"
 BOOTDIR="boot"
@@ -20,10 +20,10 @@ replace @PRODUCT@ ${product.name} ${BOOTDIR}/boot.msg
     installinitrd images-${basearch} ${kernel.initrd.path} ${BOOTDIR}/initrd.img
 %endfor
 
-replace @ROOT@ root=live:CDLABEL=PBOOT ${BOOTDIR}/silo.conf
+replace @ROOT@ 'root=live:CDLABEL=${isolabel|udev}' ${BOOTDIR}/silo.conf
 
 runcmd mkisofs -R -J -T -G /${BOOTDIR}/isofs.b -B ... \
-  -s /${BOOTDIR}/silo.conf -r -V "PBOOT" \
+  -s /${BOOTDIR}/silo.conf -r -V '${isolabel}' \
   -A "${product.name} ${product.version}" \
   -x Fedora -x repodata \
   -sparc-label "${product.name} ${product.version} Boot Disc" \

share/x86.tmpl

@@ -1,4 +1,4 @@
-<%page args="kernels, runtime_img, basearch, outroot, product"/>
+<%page args="kernels, runtime_img, basearch, outroot, product, isolabel"/>
 <%
 configdir="tmp/config_files"
 SYSLINUXDIR="usr/share/syslinux"
@@ -21,7 +21,7 @@ install ${configdir}/grub.conf ${BOOTDIR}
 
 replace @VERSION@ ${product.version} ${BOOTDIR}/grub.conf ${BOOTDIR}/isolinux.cfg ${BOOTDIR}/*.msg
 replace @PRODUCT@ ${product.name}    ${BOOTDIR}/grub.conf ${BOOTDIR}/isolinux.cfg ${BOOTDIR}/*.msg
-replace @ROOT@ 'root=live:CDLABEL=${udev_escape(product.name)}' ${BOOTDIR}/isolinux.cfg
+replace @ROOT@ 'root=live:CDLABEL=${isolabel|udev}' ${BOOTDIR}/isolinux.cfg
 
 %if exists("boot/memtest*"):
     install boot/memtest* ${BOOTDIR}
@@ -64,7 +64,7 @@ hardlink ${KERNELDIR}/initrd.img ${BOOTDIR}
 runcmd mkisofs -o ${outroot}/images/boot.iso \
        -b ${BOOTDIR}/isolinux.bin -c ${BOOTDIR}/boot.cat \
        -boot-load-size 4 -boot-info-table -no-emul-boot \
-       ${efiargs} -R -J -V '${product.name}' -T -graft-points \
+       ${efiargs} -R -J -V '${isolabel}' -T -graft-points \
        ${BOOTDIR}=${outroot}/${BOOTDIR} \
        ${KERNELDIR}=${outroot}/${KERNELDIR} \
        ${LIVEDIR}=${outroot}/${LIVEDIR} \

src/pylorax/treebuilder.py

@@ -142,12 +142,15 @@ class TreeBuilder(object):
     '''Builds the arch-specific boot images.
     inroot should be the installtree root (the newly-built runtime dir)'''
     def __init__(self, product, arch, inroot, outroot, runtime, templatedir=None):
+        # NOTE: if you change isolabel, you need to change pungi to match, or
+        # the pungi images won't boot.
+        isolabel = "{0.name} {0.version} {1.basearch}".format(product, arch)
         # NOTE: if you pass an arg named "runtime" to a mako template it'll
         # clobber some mako internal variables - hence "runtime_img".
         self.vars = DataHolder(arch=arch, product=product, runtime_img=runtime,
                                inroot=inroot, outroot=outroot,
                                basearch=arch.basearch, libdir=arch.libdir,
-                               udev_escape=udev_escape)
+                               isolabel=isolabel, udev=udev_escape)
         self._runner = LoraxTemplateRunner(inroot, outroot, templatedir=templatedir)
         self._runner.defaults = self.vars