66 lines
1.4 KiB
Bash
Executable File
66 lines
1.4 KiB
Bash
Executable File
#!/usr/bin/bash
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# Usage: borg_partclone_backup.sh VGNAME LVNAME SNP_SZ PART_NO SRV_HOST SRV_BORG_REPO
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VGNAME=$1
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LVNAME=$2
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DATE=`date +%Y%m%dT%H%M%S`
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SNP_NM=$LVNAME-$DATE
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SNP_SZ=$3
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PART_NO=$4
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SRV_HOST=$5
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SRV_BORG_REPO=$6
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SRV_BORG_BACKUP_NAME=$LVNAME-$7-$DATE
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exitmsg () {
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echo $1
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exit 1;
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}
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rmsnap () {
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# Remove the snapshot
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lvremove -y $VGNAME/$SNP_NM >/dev/null
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}
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rmloop () {
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# Free the loop device
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losetup -D /dev/loop0 >/dev/null
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}
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exitmsg_rm () {
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rmsnap
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exitmsg $1
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}
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exitmsg_rm_loop () {
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rmloop
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exitmsg_rm $1
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}
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exit_ok () {
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rmloop
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rmsnap
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echo "Successful backup for $VGNAME/$LVNAME part. $PART_NO"
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}
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echo "Starting backup for $VGNAME/$LVNAME part. $PART_NO"
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# Be root
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test `id -u` == "0" || exitmsg "Run this script as root"
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# Create the snapshot
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lvcreate -y -n $SNP_NM -s -L $SNP_SZ $VGNAME/$LVNAME >/dev/null || exitmsg "Cannot create snapshot"
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# Setup loopback device
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losetup -P /dev/loop0 /dev/$VGNAME/$SNP_NM || exitmsg_rm "/dev/loop0 already used"
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# Check filesystem
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fsck -y /dev/loop0p$PART_NO || exitmsg_rm_loop "Failed to check filesystem /dev/loop0p$PART_NO"
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# Clone
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partclone.ext4 -s /dev/loop0p$PART_NO -c -q 2>&1 | \
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BORG_UNKNOWN_UNENCRYPTED_REPO_ACCESS_IS_OK=yes \
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borg2 -r ssh://$SRV_HOST$SRV_BORG_REPO create --stdin-name image.pcl $SRV_BORG_BACKUP_NAME - || exitmsg_rm_loop "Backup failed for $VGNAME/$SNP_NM part. $PART_NO"
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exit_ok
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