#! /bin/sh

# Wrapper for the ceph udev rules.  Since older versions of udev+blkid
# do not support gpt label fields, this shell script is invoked from
# the udev rule to read the needed gpt label fields and call the
# appropriate ceph OSD functions.

PARTNO=$1
NAME=$2
PARENT_NAME=$3

# Get GPT partition type guid
ID_PART_ENTRY_TYPE=$(/usr/sbin/sgdisk --info=${PARTNO} /dev/${PARENT_NAME} | grep "Partition GUID code" | awk '{print $4}' | tr '[:upper:]' '[:lower:]')

if [ -z "$ID_PART_ENTRY_TYPE" ]; then
    exit
fi

ID_PART_ENTRY_UUID=$(/usr/sbin/sgdisk --info=${PARTNO} /dev/${PARENT_NAME} | grep "Partition unique GUID" | awk '{print $4}' | tr '[:upper:]' '[:lower:]')

# set up the symlinks
mkdir -p /dev/disk/by-partuuid
ln -sf ../../${NAME} /dev/disk/by-partuuid/$ID_PART_ENTRY_UUID
mkdir -p /dev/disk/by-parttypeuuid
ln -sf ../../${NAME} /dev/disk/by-parttypeuuid/${ID_PART_ENTRY_TYPE}.${ID_PART_ENTRY_UUID}

case $ID_PART_ENTRY_TYPE in

45b0969e-9b03-4f30-b4c6-b4b80ceff106)
    # JOURNAL_UUID
    # activate ceph-tagged journal partitions.
    /usr/sbin/ceph-disk -v activate-journal /dev/${NAME}
    ;;

45b0969e-9b03-4f30-b4c6-5ec00ceff106)
    # DMCRYPT_JOURNAL_UUID
    # Map journal if using dm-crypt
    /sbin/cryptsetup --key-file /etc/ceph/dmcrypt-keys/${ID_PART_ENTRY_UUID} --key-size 256 create ${ID_PART_ENTRY_UUID} /dev/${NAME}
    ;;

4fbd7e29-9d25-41b8-afd0-062c0ceff05d)
    # OSD_UUID
    # activate ceph-tagged partitions.
    /usr/sbin/ceph-disk -v activate /dev/${NAME}
    ;;

4fbd7e29-9d25-41b8-afd0-5ec00ceff05d)
    # DMCRYPT_OSD_UUID
    # Map data device and activate ceph-tagged partitions
    # for dm-crypted data devices
    /sbin/cryptsetup --key-file /etc/ceph/dmcrypt-keys/${ID_PART_ENTRY_UUID} --key-size 256 create ${ID_PART_ENTRY_UUID} /dev/${NAME}
    bash -c 'while [ ! -e /dev/mapper/${ID_PART_ENTRY_UUID} ];do sleep 1; done'
    /usr/sbin/ceph-disk-activate /dev/mapper/${ID_PART_ENTRY_UUID}
    ;;

89c57f98-2fe5-4dc0-89c1-f3ad0ceff2be)
    # TOBE_UUID
    ;;

89c57f98-2fe5-4dc0-89c1-5ec00ceff2be)
    # DMCRYPT_TOBE_UUID
    ;;

*)
    # Not a Ceph device
    ;;

esac

exit
