Otho/zfs-backup
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Updates up to first successful send.

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This commit is contained in:
Otho 2022-11-20 03:33:44 -05:00
parent cc9357d43a
commit 36caad4ba5
Signed by: Otho
GPG Key ID: 16C720CD3BBE21D9
1 changed files with 70 additions and 27 deletions
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97
backup.sh Executable file → Normal file
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@ -1,9 +1,9 @@
#!/usr/bin/env sh
### 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>
# <local hostname> <local ssh port> <this host's root zfs> <this host's user>
# <remote host 1 address> <host 1 ssh port> <host 1 root zfs>
# <remote host 2 address> <host 2 ssh port> <host 2 root zfs>
# ...
### datasets.txt (Only required for aggregator setup.)
@ -15,11 +15,7 @@
# <dataset 3>
# ...
if [ ! -f nodes.txt ]; then echo "No nodes specified."; exit 2; fi
read BR_HOST BR_PORT BR_ROOT BR_USER < nodes.txt
list_filesets()
list_datasets()
{
zfs list | tail -n +2 | cut -d' ' -f1|grep ${BR_ROOT}
}
@ -44,7 +40,7 @@ setup_aggregator()
setup_mirror()
{
zfs allow -u ${BR_USER} send,snapshot,hold ${BR_ROOT}
zfs allow -du ${BR_USER} \
zfs allow -u ${BR_USER} \
compression,mountpoint,receive,create,mount ${BR_ROOT}
}
@ -57,31 +53,78 @@ create_snapshot()
send_single_snapshot()
{
BR_NEW_SNAPSHOT=`get_latest_snapshot`
tail -n +2 nodes.txt > sendnodes.tmp
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 $BR_NEW_SNAPSHOT > "old-snapshot.txt"
case $BR_REMOTE_ADDR in
\#*) continue;;
esac
if [ $BR_TEST_MODE = "TRUE" ]; then
echo zfs send -R ${BR_ROOT}@${BR_NEW_SNAPSHOT}
echo ssh -i ~/.ssh/id_rsa -o port=${BR_REMOTE_PORT} \
${BR_REMOTE_USER}@${BR_REMOTE_ADDR} \
zfs receive -vu ${BR_REMOTE_ROOT}@${BR_NEW_SNAPSHOT}
else
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}
fi
done < sendnodes.tmp
rm sendnodes.tmp
if [ $BR_TEST_MODE = "TRUE" ]; then
:
else
echo $BR_NEW_SNAPSHOT > "old-snapshot.txt"
fi
}
send_incremental_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 Will send $BR_NEW_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 $BR_NEW_SNAPSHOT > "old-snapshot.txt"
}
create_snapshot
if [ -f "old-snapshot.txt" ]; then
send_incremental_snapshot
else
send_single_snapshot
fi
################################### MAIN ####################################
### Options
set -- `getopt "tl:" "$@"` || {
echo "Usage: `basename $0` [-tl] [command]" 1>&2
exit 1
}
BR_TEST_MODE=FALSE
while :; do
case "$1" in
-t)
BR_TEST_MODE=TRUE
echo Test mode.
;;
--) shift; break ;;
esac
shift
done
read BR_HOST BR_PORT BR_ROOT BR_USER < nodes.txt
if [ ! -f nodes.txt ]; then echo "No nodes specified."; exit 2; fi
### Command
case "$1" in
list) list_datasets ;;
create) create_snapshot ;;
setup-mirror) setup_mirror ;;
send)
if [ -f "old-snapshot.txt" ]; then
send_incremental_snapshot
else
send_single_snapshot
fi
;;
esac