Otho/zfs-backup
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Updated to single data file.

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Otho 2022-11-19 03:49:50 -05:00
parent 1d093d39d6
commit 7e776ad42c
Signed by: Otho
GPG Key ID: 16C720CD3BBE21D9
2 changed files with 30 additions and 40 deletions
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5
.gitignore vendored
View File

@ -1,4 +1,3 @@
datasets.txt
rootzfs.txt
hosts.txt
user.txt
nodes.txt
old-snapshot.txt

65
backup.sh
View File

@ -1,18 +1,11 @@
#!/usr/bin/env sh
## Data Format
### user.txt
# <username>
### hosts.txt
# <host 1 address> <host 1 port> <host 1 root zfs>
# <host 2 address> <host 2 port> <host 2 root zfs>
### nodes.txt
# localhost 22 <this host's root zfs> <this host's user>
# <remote host 1 address> <host 1 port> <host 1 root zfs>
# <remote host 2 address> <host 2 port> <host 2 root zfs>
# ...
### rootzfs.txt
# <root zfs>
### datasets.txt (Only required for aggregator setup.)
# <dataset 1>
# <dataset 1>/<dataset 1a>
@ -22,21 +15,19 @@
# <dataset 3>
# ...
if [ ! -f user.txt ]; then echo "No user specified."; exit 2; fi
if [ ! -f hosts.txt ]; then echo "No hosts specified."; exit 2; fi
if [ ! -f rootzfs.txt ]; then echo "No rootzfs specified."; exit 2; fi
if [ ! -f nodes.txt ]; then echo "No nodes specified."; exit 2; fi
BAKRNG_ROOT=`cat rootzfs.txt`
read BR_HOST BR_PORT BR_ROOT BR_USER < nodes.txt
list_filesets()
{
zfs list | tail -n +2 | cut -d' ' -f1|grep ${BAKRNG_ROOT}
zfs list | tail -n +2 | cut -d' ' -f1|grep ${BR_ROOT}
}
get_latest_snapshot()
{
zfs list -t snapshot |
grep ${BAKRNG_ROOT} |
grep ${BR_ROOT} |
tail -n1 |
cut -d'@' -f2 |
cut -d' ' -f 1
@ -44,7 +35,7 @@ get_latest_snapshot()
setup_aggregator()
{
zfs allow -u `cat user.txt` send,snapshot,hold ${BAKRNG_ROOT}
zfs allow -u ${BR_USER} send,snapshot,hold ${BR_ROOT}
for dataset in `cat datasets.txt`; do
zfs create $dataset
done
@ -52,43 +43,43 @@ setup_aggregator()
setup_mirror()
{
zfs allow -u `cat user.txt` send,snapshot,hold ${BAKRNG_ROOT}
zfs allow -du `cat user.txt` \
compression,mountpoint,receive,create,mount ${BAKRNG_ROOT}
zfs allow -u ${BR_USER} send,snapshot,hold ${BR_ROOT}
zfs allow -du ${BR_USER} \
compression,mountpoint,receive,create,mount ${BR_ROOT}
}
create_snapshot()
{
id="`date -I`-`date +%s`"
zfs snapshot -r ${BAKRNG_ROOT}@${id}
zfs snapshot -r ${BR_ROOT}@${id}
}
send_single_snapshot()
{
BAKRNG_SEND_SNAPSHOT=`get_latest_snapshot`
while read BAKRNG_REMOTE_ADDR BAKRNG_REMOTE_PORT BAKRNG_REMOTE_ROOT; do
zfs send -R ${BAKRNG_ROOT}@${BAKRNG_SEND_SNAPSHOT} |
ssh -i ~/.ssh/id_rsa \
-o port=${BAKRNG_REMOTE_PORT} ${BAKRNG_REMOTE_ADDR} \
zfs receive -dvu ${BAKRNG_REMOTE_ROOT}@${BAKRNG_SEND_SNAPSHOT}
BR_NEW_SNAPSHOT=`get_latest_snapshot`
while read BR_REMOTE_ADDR BR_REMOTE_PORT BR_REMOTE_ROOT BR_REMOTE_USER; do
zfs send -R ${BR_ROOT}@${BR_NEW_SNAPSHOT} |
ssh -i ~/.ssh/id_rsa -o port=${BR_REMOTE_PORT} \
${BR_REMOTE_USER}@${BR_REMOTE_ADDR} \
zfs receive -dvu ${BR_REMOTE_ROOT}@${BR_NEW_SNAPSHOT}
done
echo $BAKRNG_SEND_SNAPSHOT > "last-snapshot.txt"
echo $BR_NEW_SNAPSHOT > "old-snapshot.txt"
}
send_incremental_snapshop()
{
BAKRNG_SEND_SNAPSHOT=`get_latest_snapshot`
while read BAKRNG_REMOTE_ADDR BAKRNG_REMOTE_PORT BAKRNG_REMOTE_ROOT; do
zfs send -R -i `cat last-snapshot.txt` \
${BAKRNG_ROOT}@${BAKRNG_SEND_SNAPSHOT} | ssh -i ~/.ssh/id_rsa \
-o port=${BAKRNG_REMOTE_PORT} ${BAKRNG_REMOTE_ADDR} \
zfs receive -dvu ${BAKRNG_REMOTE_ROOT}@${BAKRNG_SEND_SNAPSHOT}
BR_NEW_SNAPSHOT=`get_latest_snapshot`
while read BR_REMOTE_ADDR BR_REMOTE_PORT BR_REMOTE_ROOT BR_REMOTE_USER; do
zfs send -R -i `cat old-snapshot.txt` ${BR_ROOT}@${BR_NEW_SNAPSHOT} |
ssh -i ~/.ssh/id_rsa -o port=${BR_REMOTE_PORT} \
${BR_REMOTE_USER}@${BR_REMOTE_ADDR} \
zfs receive -dvu ${BR_REMOTE_ROOT}@${BR_NEW_SNAPSHOT}
done
echo $BAKRNG_SEND_SNAPSHOT > "last-snapshot.txt"
echo $BR_NEW_SNAPSHOT > "old-snapshot.txt"
}
if [ -f "last-snapshot.txt" ]; then
if [ -f "old-snapshot.txt" ]; then
send_incremental_snapshop
else
send_single_snapshot