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update.sh: be more careful searching for the correct disk

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otherwise we might catch the install USB stick still inserted
This commit is contained in:
Harald Hoyer 2018-09-12 16:37:15 +02:00
parent 1dc7a0fae6
commit 1138c7c1ec
1 changed files with 49 additions and 15 deletions
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64
update.sh
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@ -69,27 +69,61 @@ CURRENT_ROOT_HASH=${CURRENT_ROOT_HASH%% *}
CURRENT_ROOT_UUID=${CURRENT_ROOT_HASH:32:8}-${CURRENT_ROOT_HASH:40:4}-${CURRENT_ROOT_HASH:44:4}-${CURRENT_ROOT_HASH:48:4}-${CURRENT_ROOT_HASH:52:12}
[[ /dev/disk/by-partlabel/root1 -ef /dev/disk/by-partuuid/${CURRENT_ROOT_UUID} ]] \
&& NEW_ROOT_NUM=2 && OLD_ROOT_NUM=1
bootdisk() {
UUID=$({ read -r -n 1 -d '' _; read -n 72 uuid; echo -n ${uuid,,}; } < /sys/firmware/efi/efivars/LoaderDevicePartUUID-4a67b082-0a4c-41cf-b6c7-440b29bb8c4f)
[[ /dev/disk/by-partlabel/root2 -ef /dev/disk/by-partuuid/${CURRENT_ROOT_UUID} ]] \
&& NEW_ROOT_NUM=1 && OLD_ROOT_NUM=2
[[ $UUID ]] || return 1
echo "/dev/disk/by-partuuid/$UUID"
return 0
}
if ! [[ $NEW_ROOT_NUM ]]; then
get_disk() {
for dev in /dev/disk/by-path/*; do
[[ $dev -ef $1 ]] || continue
echo ${dev%-part*}
return 0
done
return 1
}
ROOT_DEV=$(get_disk $(bootdisk))
if ! [[ $ROOT_DEV ]]; then
echo "Current partitions booted from not found!"
exit 1
fi
## find base device and partition number
for dev in /dev/disk/by-path/*; do
if ! [[ $ROOT_PARTNO ]] && [[ /dev/disk/by-partlabel/root${NEW_ROOT_NUM} -ef $dev ]]; then
ROOT_PARTNO=${dev##*-part}
ROOT_DEV=${dev%-part*}
fi
[[ $ROOT_PARTNO ]] && break
unset FOUND
for dev in ${ROOT_DEV}-part*; do
[[ $(blkid -o value -s PARTLABEL $dev) == root1 ]] &&
ROOT1_DEV=$dev
[[ $(blkid -o value -s PARTLABEL $dev) == root2 ]] &&
ROOT2_DEV=$dev
[[ $(blkid -o value -s PARTUUID $dev) == $CURRENT_ROOT_UUID ]] &&
CURRENT_ROOT_DEV=$dev
[[ $ROOT1_DEV ]] && [[ $ROOT2_DEV ]] && [[ $CURRENT_ROOT_DEV ]] && break
done
if ! [[ $ROOT_PARTNO ]] || ! [[ $ROOT_DEV ]]; then
if ! [[ $ROOT1_DEV ]] || ! [[ $ROOT2_DEV ]] || ! [[ $CURRENT_ROOT_DEV ]]; then
echo "Couldn't find partition numbers"
exit 1
fi
[[ $CURRENT_ROOT_DEV == $ROOT2_DEV ]] \
&& NEW_ROOT_NUM=1 && OLD_ROOT_NUM=2 \
&& NEW_ROOT_PARTNO=${ROOT1_DEV##*-part}
[[ $CURRENT_ROOT_DEV == $ROOT1_DEV ]] \
&& NEW_ROOT_NUM=2 && OLD_ROOT_NUM=1 \
&& NEW_ROOT_PARTNO=${ROOT2_DEV##*-part}
ROOT_PARTNO=${CURRENT_ROOT_DEV##*-part}
if ! [[ $NEW_ROOT_PARTNO ]] || ! [[ $ROOT_PARTNO ]] || ! [[ $ROOT_DEV ]]; then
echo "Couldn't find partition numbers"
exit 1
fi
@ -129,12 +163,12 @@ if ! [[ $NO_CHECK ]]; then
sha512sum -c sha512sum.txt
fi
dd status=progress if=root.img of=/dev/disk/by-partlabel/root${NEW_ROOT_NUM}
dd status=progress if=root.img of=${ROOT_DEV}-part${NEW_ROOT_PARTNO}
# set the new partition uuids
ROOT_UUID=${ROOT_HASH:32:8}-${ROOT_HASH:40:4}-${ROOT_HASH:44:4}-${ROOT_HASH:48:4}-${ROOT_HASH:52:12}
sfdisk --part-uuid ${ROOT_DEV} ${ROOT_PARTNO} ${ROOT_UUID}
sfdisk --part-uuid ${ROOT_DEV} ${NEW_ROOT_PARTNO} ${ROOT_UUID}
# install to /efi
mkdir -p /efi/EFI/${NAME}