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detect partition boot separate

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Antynea
2015-08-06 23:57:29 +02:00
parent 94c9fedef3
commit 87bc0f6358
1 changed files with 46 additions and 37 deletions
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83
41_snapshots-btrfs
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@@ -8,7 +8,7 @@
# #
# What this script does: #
# - Automatically List snapshots existing on root partition (btrfs). #
# - Automatically detect kernel, initramfs and intel microcode in "/boot" directory on snapshots. (For custon name, see below.) #
# - Automatically Detect kernel, initramfs and intel microcode in "/boot" directory on snapshots. (For custon name, see below.) #
# - Automatically Create corresponding menuentry in grub.cfg , which ensures a very easy rollback. #
# #
# How to use it: #
@@ -30,7 +30,7 @@
# Script in progress #
# to do : #
# # #
# * detect partition boot separate #
# * verify compatibility with manjaro and snapper (but I don't use them, so it will take some time) #
# #
#########################################################################################################################################################
@@ -83,6 +83,13 @@ gbgmp="/tmp/gbgmp"
CLASS="--class snapshots --class gnu-linux --class gnu --class os"
## save IFS
oldIFS=$IFS
## grub path (auto-detect if /boot is separate partition or not)
grub_path()
{
grub_path="$gbgmp/$snap_dir_name/boot"
[[ root_uuid != boot_uuid ]] && grub_path="/boot"
echo "$grub_path"
}
##############
@@ -94,6 +101,7 @@ oldIFS=$IFS
## menu entries
snapshots_entry()
{
## \" required for snap,kernels,init,microcode with space in their name
echo " submenu '${1} ${2} ${3}' {"
for k in "${name_kernel[@]}"; do
for i in "${name_initramfs[@]}"; do
@@ -110,16 +118,16 @@ snapshots_entry()
else
search --no-floppy --fs-uuid --set=root ${boot_uuid}
fi
echo 'Loading Snapshot: ${snap_dir_name}'
echo 'Loading Snapshot: "${snap_dir_name}" "${snap_date_time}"'
echo 'Loading Kernel: "${k}" ...'
linux \"/${snap_dir_name}/boot/"${k}"\" root=UUID=${root_uuid} rw rootflags=subvol=${snap_dir_name} ${kernel_parameters}
linux \"/${snap_dir_name}/boot/"${k}"\" root=UUID=${root_uuid} rw rootflags=subvol=\""${snap_dir_name}"\" ${kernel_parameters}
echo 'Loading Initramfs: "${i}" ...'"
if [ -f "/${snap_dir_name}/boot/${microcode}" ] ; then
if [ -f "/${snap_dir_name}/boot/"${microcode}"" ] ; then
echo "\
initrd \"/${snap_dir_name}/boot/${microcode}\" initrd \"/${snap_dir_name}/boot/${i}\""
initrd \"/${snap_dir_name}/boot/"${microcode}"\" initrd \"/${snap_dir_name}/boot/"${i}"\""
else
echo "\
initrd \"/${snap_dir_name}/boot/${i}\""
initrd \"/${snap_dir_name}/boot/"${i}"\""
fi
echo " }"
done
@@ -144,14 +152,14 @@ snapshot_list()
detect_kernel()
{
## Arch original kernel (auto-detect)
for akernel in $snap_dir_boot/vmlinuz-* ; do
for akernel in $(grub_path)/vmlinuz-* ; do
list_kernel+=("$akernel")
done
## Custom name kernel in GRUB_BTRFS_NKERNEL
if [ ! -z ${nkernel} ] ; then
for ckernel in "${nkernel[@]}" ; do
[[ ! -f /${snap_dir_boot}/${ckernel} ]] && continue;
[[ ! -f /$(grub_path)/${ckernel} ]] && continue;
list_kernel+=("$ckernel")
done
fi
@@ -160,14 +168,14 @@ detect_kernel()
detect_initramfs()
{
## Arch original kernel (auto-detect)
for ainitramfs in $snap_dir_boot/initramfs-* ; do
for ainitramfs in $(grub_path)/initramfs-* ; do
list_initramfs+=("$ainitramfs")
done
## Custom name initramfs in GRUB_BTRFS_NINIT
if [ ! -z ${ninit} ] ; then
for cinitramfs in "${ninit[@]}" ; do
[[ ! -f /${snap_dir_boot}/${ninit} ]] && continue;
[[ ! -f /$(grub_path)/${ninit} ]] && continue;
list_initramfs+=("$ninit")
done
fi
@@ -176,40 +184,41 @@ detect_initramfs()
## List of kernels and initramfs in snapshots
list_kernels_initramfs()
{
[[ ! -d $gbgmp ]] && mkdir -p $gbgmp
mount -o subvolid=0 /dev/disk/by-uuid/$root_uuid $gbgmp/
echo "submenu '${submenuname}' {"
IFS=$'\n'
for item in $(snapshot_list); do
IFS=$oldIFS
item=($item)
snap_dir_name=${item[@]:2:${#item[@]}}
if [ -f $gbgmp/$snap_dir_name/boot/grub/grub.cfg ]; then
snap_date_time=${item[@]:0:2}
gettext_printf $"Found Snapshot: %s\n" "$snap_dir_name $snap_date_time" >&2 ;
snap_dir_boot=$gbgmp/$snap_dir_name/boot
unset list_kernel
detect_kernel
name_kernel=("${list_kernel[@]##*"/"}")
# echo "kernel = ${name_kernel[*]}"
unset list_initramfs
detect_initramfs
name_initramfs=("${list_initramfs[@]##*"/"}")
# echo "initramfs = ${name_initramfs[*]}"
fi
# Create menu entries
snapshots_entry "${prefixentry}" "${snap_dir_name}" "${snap_date_time}"
done
echo "}"
if [ $root_uuid = $boot_uuid ] ; then
[[ ! -d $gbgmp ]] && mkdir -p $gbgmp
mount -o subvolid=0 /dev/disk/by-uuid/$root_uuid $gbgmp/
fi
IFS=$'\n'
for item in $(snapshot_list); do
IFS=$oldIFS
item=($item)
snap_dir_name=${item[@]:2:${#item[@]}}
if [ -f $(grub_path)/grub/grub.cfg ]; then
snap_date_time=${item[@]:0:2}
gettext_printf $"# Found Snapshot: %s\n" "$snap_dir_name $snap_date_time" >&2 ;
unset list_kernel
detect_kernel
name_kernel=("${list_kernel[@]##*"/"}")
# echo "kernel = ${name_kernel[*]}"
unset list_initramfs
detect_initramfs
name_initramfs=("${list_initramfs[@]##*"/"}")
# echo "initramfs = ${name_initramfs[*]}"
fi
# Create menu entries
snapshots_entry "${prefixentry}" "${snap_dir_name}" "${snap_date_time}"
done
IFS=$oldIFS
umount $gbgmp
if [ $root_uuid = $boot_uuid ] ; then umount $gbgmp ; fi
}
### END auto detect ###
### Choice of method ###
if [ ${choise_of_method} = "1" ] ; then
gettext_printf "###### - Grub-btrfs: Auto-detect - ######\n" >&2 ;
echo "submenu '${submenuname}' {"
list_kernels_initramfs ;
echo "}"
gettext_printf "###### - Grub-btrfs: Auto-detect - ######\n" >&2 ;
fi
### End choice of method ###