#!/usr/bin/bash
# Usage: borg_partclone_backup.sh VGNAME LVNAME SNP_SZ SRV_HOST SRV_BORG_REPO
VGNAME=$1
LVNAME=$2
SNP_NM=$LVNAME-`date +%Y%m%dT%H%M%S`
SNP_SZ=$3
SRV_HOST=$4
SRV_BORG_REPO=$5

# Be root
test `id -u` == "0" || exit 1

# Create the snapshot
lvcreate -y -n $SNP_NM -s -L $SNP_SZ $VGNAME/$LVNAME

# Clone
partclone.ext4 -s /dev/$VGNAME/$SNP_NM -c | \
    BORG_UNKNOWN_UNENCRYPTED_REPO_ACCESS_IS_OK=yes \
    borg2 -r ssh://$SRV_HOST$SRV_BORG_REPO create -s $SNP_NM -

# Remove the snapshot
lvremove -y $VGNAME/$SNP_NM