forked from pool/grub2
Accepting request 214140 from home:michael-chang:branches:Base:System
- refresh 0001-script-provide-overridable-root-by-subvol.patch * Introduce $boot_prefix for setting prefix on seeking other /boot directory. - refresh 0002-script-create-menus-for-btrfs-snapshot.patch * Support existing snapshots by creating their missing slave configs. * Temporarily default to disable this feature until receiving more tests from QA. * Introduce GRUB_ENABLE_CUSTOM_SNAPSHOT_SUBMENU to allow custom submenu for listing snapshots rather than the default one. OBS-URL: https://build.opensuse.org/request/show/214140 OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=67
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@ -7,6 +7,10 @@ Patch-Mainline: no
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This patch provides a environment variable $subvol that can be used
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to override path relative to absolute root by specific $subvol.
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v1:
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Introduce $boot_prefix for setting prefix on seeking other /boot
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directory.
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Signed-off-by: Michael Chang <mchang@suse.com>
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Index: grub-2.02~beta2/util/grub.d/10_linux.in
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@ -94,3 +98,17 @@ Index: grub-2.02~beta2/util/grub.d/10_linux.in
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fi
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fi
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sed "s/^/$submenu_indentation/" << EOF
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@@ -161,11 +197,11 @@ EOF
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machine=`uname -m`
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case "x$machine" in
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xi?86 | xx86_64)
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- list=`for i in /boot/vmlinuz-* /vmlinuz-* /boot/kernel-* ; do
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+ list=`for i in ${boot_prefix}/boot/vmlinuz-* ${boot_prefix}/vmlinuz-* ${boot_prefix}/boot/kernel-* ; do
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if grub_file_is_not_garbage "$i" ; then echo -n "$i " ; fi
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done` ;;
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*)
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- list=`for i in /boot/vmlinuz-* /boot/vmlinux-* /vmlinuz-* /vmlinux-* /boot/kernel-* ; do
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+ list=`for i in ${boot_prefix}/boot/vmlinuz-* ${boot_prefix}/boot/vmlinux-* ${boot_prefix}/vmlinuz-* ${boot_prefix}/vmlinux-* ${boot_prefix}/boot/kernel-* ; do
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if grub_file_is_not_garbage "$i" ; then echo -n "$i " ; fi
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done` ;;
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esac
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@ -7,6 +7,13 @@ Patch-Mainline: no
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This patch adds a new script that will create the menus used for
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booting btrfs snapshots.
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v1:
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* Support existing snapshots by creating their missing slave configs.
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* Temporarily default to disable this feature until receiving more
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tests from QA.
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* Introduce GRUB_ENABLE_CUSTOM_SNAPSHOT_SUBMENU to allow custom
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submenu for listing snapshots rather than the default one.
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Signed-off-by: Michael Chang <mchang@suse.com>
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Index: grub-2.02~beta2/Makefile.util.def
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@ -31,14 +38,15 @@ Index: grub-2.02~beta2/util/grub-mkconfig.in
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===================================================================
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--- grub-2.02~beta2.orig/util/grub-mkconfig.in
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+++ grub-2.02~beta2/util/grub-mkconfig.in
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@@ -250,7 +250,9 @@ export GRUB_DEFAULT \
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@@ -250,7 +250,10 @@ export GRUB_DEFAULT \
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GRUB_OS_PROBER_SKIP_LIST \
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GRUB_DISABLE_SUBMENU \
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GRUB_CMDLINE_LINUX_RECOVERY \
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- GRUB_USE_LINUXEFI
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+ GRUB_USE_LINUXEFI \
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+ GRUB_DISABLE_BOOTING_SNAPSHOT \
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+ GRUB_DISABLE_BOOTING_SNAPSHOT_SUBMENU
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+ GRUB_DISABLE_BOOTING_SNAPSHOT_SUBMENU \
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+ GRUB_ENABLE_CUSTOM_SNAPSHOT_SUBMENU
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if test "x${grub_cfg}" != "x"; then
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rm -f "${grub_cfg}.new"
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@ -46,7 +54,7 @@ Index: grub-2.02~beta2/util/grub.d/80_btrfs_snapshot.in
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===================================================================
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--- /dev/null
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+++ grub-2.02~beta2/util/grub.d/80_btrfs_snapshot.in
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@@ -0,0 +1,111 @@
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@@ -0,0 +1,174 @@
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+#! /bin/sh
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+set -e
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+
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@ -86,7 +94,8 @@ Index: grub-2.02~beta2/util/grub.d/80_btrfs_snapshot.in
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+# The slave config path in btrfs snapshot that will be sourced by master config
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+# The menu entries in slave config will have it's root overridable by specified
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+# subvolume name
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+slave_cfg="boot/grub2/snapshot_menuentry.cfg"
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+slave_cfg_name="snapshot_menuentry.cfg"
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+slave_cfg="boot/grub2/${slave_cfg_name}"
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+
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+# The current config which is being outputted by grub-mkconfig
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+output_cfg=`readlink /proc/$PPID/fd/1 | sed s/.new$//`
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@ -94,11 +103,20 @@ Index: grub-2.02~beta2/util/grub.d/80_btrfs_snapshot.in
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+grub_mkconfig_dir=`dirname $0`
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+grub_script_check="${bindir}/grub2-script-check"
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+
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+# Stockpile directory for created slave config for snapshots without it
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+scanned_snapshot_cfg_dir="/boot/grub2/scanned_snapshot_cfg"
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+
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+# Remove any slave config if booting snapshot gets disabled, in case it will become
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+# inconsistent on further updates, note this also removes master_snapshot_cfg
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+if [ "x${GRUB_DISABLE_BOOTING_SNAPSHOT}" = "xtrue" ]; then
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+
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+# Temporarily we disable this as it is quite new and still in developing
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+# It's subjected to be enabled by default in future as the option name
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+# GRUB_DISABLE_BOOTING_SNAPSHOT suggests. So for new you'll need to explicit
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+# specify GRUB_DISABLE_BOOTING_SNAPSHOT=false the update the config
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+if [ "x${GRUB_DISABLE_BOOTING_SNAPSHOT}" != "xfalse" ]; then
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+ rm -f "/${slave_cfg}"
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+ rm -f "${master_snapshot_cfg}"
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+ rm -rf "${scanned_snapshot_cfg_dir}"
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+ exit 0
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+fi
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+
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@ -112,6 +130,45 @@ Index: grub-2.02~beta2/util/grub.d/80_btrfs_snapshot.in
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+ if ${grub_script_check} "/${slave_cfg}.new"; then
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+ mv -f "/${slave_cfg}.new" "/${slave_cfg}"
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+ fi
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+
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+ # Scan existing snapshots to create their missing slave configs
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+ # This should only be done once
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+ if [ ! -d "$scanned_snapshot_cfg_dir" ]; then
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+
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+ mkdir -p "$scanned_snapshot_cfg_dir"
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+
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+ for snapshot in /.snapshots/*/snapshot; do
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+ config="${snapshot}/etc/default/grub"
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+
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+ bootdir="${snapshot}/boot"
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+ outdir="${scanned_snapshot_cfg_dir}${snapshot}"
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+
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+ # skip if slave config already exists in snapshot
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+ if [ -f "${snapshot}/${slave_cfg}" ]; then
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+ continue
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+ fi
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+
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+ (
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+ # source config for kernel command lines .. etc
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+ if [ -f "$config" ]; then
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+ . "$config"
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+ else
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+ # skip when no config
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+ continue
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+ fi
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+
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+ overridable_root_by_subvol=true boot_prefix="$bootdir" ${grub_mkconfig_dir}/10_linux > "/${slave_cfg}.new"
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+ )
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+
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+ # Check if the config is sane to use
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+ if ${grub_script_check} "/${slave_cfg}.new"; then
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+ mkdir -p "$outdir"
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+ mv -f "/${slave_cfg}.new" "${outdir}/${slave_cfg_name}"
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+ fi
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+ done
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+
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+ fi
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+
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+fi
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+
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+# Create the bootable snapshots submenus in master config, use the ${OS} to indicate
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@ -140,7 +197,11 @@ Index: grub-2.02~beta2/util/grub.d/80_btrfs_snapshot.in
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+# could be source to run as a backup
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+# Here we search and list snapshots created by snapper by using it's convention on
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+# naming snapshots
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+cat <<EOF >"${master_snapshot_cfg}"
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+
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+if [ "x${GRUB_ENABLE_CUSTOM_SNAPSHOT_SUBMENU}" != "xtrue" ]; then
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+
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+# Write default config if custom one not in use
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+ cat <<EOF >"${master_snapshot_cfg}"
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+insmod regexp
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+submenu "Bootable snapshots for ${OS}" {
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+ for x in /.snapshots/*; do
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@ -151,6 +212,13 @@ Index: grub-2.02~beta2/util/grub.d/80_btrfs_snapshot.in
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+ export subvol
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+ source "\${subvol}/${slave_cfg}"
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+ }
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+ elif [ -f "${scanned_snapshot_cfg_dir}\$x/snapshot/${slave_cfg_name}" ]; then
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+ snapshot_found=true
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+ submenu "\$x" "\$x" {
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+ set subvol="\$2/snapshot"
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+ export subvol
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+ source "${scanned_snapshot_cfg_dir}\${subvol}/${slave_cfg_name}"
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+ }
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+ fi
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+ done
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+ if [ x\$snapshot_found != xtrue ]; then
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@ -158,3 +226,6 @@ Index: grub-2.02~beta2/util/grub.d/80_btrfs_snapshot.in
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+ fi
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+}
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+EOF
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+
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+fi
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+
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@ -1,3 +1,16 @@
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-------------------------------------------------------------------
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Fri Jan 17 06:23:04 UTC 2014 - mchang@suse.com
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- refresh 0001-script-provide-overridable-root-by-subvol.patch
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* Introduce $boot_prefix for setting prefix on seeking other /boot
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directory.
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- refresh 0002-script-create-menus-for-btrfs-snapshot.patch
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* Support existing snapshots by creating their missing slave configs.
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* Temporarily default to disable this feature until receiving more
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tests from QA.
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* Introduce GRUB_ENABLE_CUSTOM_SNAPSHOT_SUBMENU to allow custom
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submenu for listing snapshots rather than the default one.
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-------------------------------------------------------------------
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Wed Jan 15 15:46:31 UTC 2014 - arvidjaar@gmail.com
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