X-Git-Url: https://iankelling.org/git/?a=blobdiff_plain;f=btrbk-run;h=4a2816b88376ef206f4e895de6537024dbf7d25d;hb=25d20d07292550e8701e33aa409e4947f3075ede;hp=71b0e6b76c939a2c36f085a93dd947adb0a49029;hpb=cca99b5a9d3cf311585a9c37b39698b0febe417c;p=distro-setup

diff --git a/btrbk-run b/btrbk-run
index 71b0e6b..4a2816b 100644
--- a/btrbk-run
+++ b/btrbk-run
@@ -21,6 +21,7 @@ trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
 
 [[ $EUID == 0 ]] || exec sudo -E "$BASH_SOURCE" "$@"
 
+
 usage() {
   cat <<'EOF'
 btrbk-run [OPTIONS]
@@ -35,16 +36,21 @@ EOF
   exit $1
 }
 
+rsync-dirs() {
+  local host=$1
+  local path=$2
+  m rsync $dry_run_arg -ahi --relative --delete "$path" "root@$host:/"
+}
+
+
+m() { printf "%s: %s\n" "${0##*/}" "$*";  "$@"; }
+
 # latest $MAIL_HOST
 if [[ -e /b/bash_unpublished/source-semi-priv ]]; then
   source /b/bash_unpublished/source-semi-priv
 fi
 
-script_dir=$(dirname $(readlink -f "$BASH_SOURCE"))
-
 # note q is owned by root:1000
-# note p/m is owned 1000:1000 and chmod 700
-
 
 mountpoints=()
 
@@ -56,13 +62,18 @@ dry_run=false # mostly for testing
 rate_limit=no
 verbose=true; verbose_arg=-v
 progress_arg="--progress"
+pull_reexec=false
 
 default_args_file=/etc/btrbk-run.conf
 if [[ -s $default_args_file ]]; then
   set -- $(< $default_args_file) "$@"
+  echo "$0: warning: default btrbk-run options set in $default_args_file (sleeping 5 seconds):"
+  cat $default_args_file
+  sleep 5
 fi
 
-temp=$(getopt -l help cl:m:nps:t:vh "$@") || usage 1
+orig_args=("$@")
+temp=$(getopt -l pull-reexec,help cl:m:nps:t:vh "$@") || usage 1
 eval set -- "$temp"
 while true; do
   case $1 in
@@ -74,6 +85,7 @@ while true; do
     -m) IFS=, mountpoints=($2); unset IFS; shift 2 ;;
     -n) dry_run=true; dry_run_arg=-n; shift ;;
     -p) progress_arg="--progress"; shift ;;
+    --pull-reexec) pull_reexec=true; shift ;;
     -q) verbose=false; verbose_arg=; progress_arg=; shift ;;
     # source host to receive a backup from
     -s) source=$2; shift 2 ;;
@@ -90,18 +102,15 @@ done
 # usefull commands are resume and archive
 cmd_arg=${1:-run}
 
-if [[ -s $default_args_file ]]; then
-  echo "$0: warning: default btrbk-run options set in $default_args_file (sleeping 5 seconds):"
-  cat $default_args_file
-  sleep 5
-fi
-
 if [[ -v targets && $source ]]; then
   echo "$0: error: -t and -s are mutually exclusive" >&2
   exit 1
 fi
 
+
 echo -e "$0: options: conf_only=$conf_only\ndry_run=$dry_run\nrate_limit=$rate_limit\nverbose=$verbose\ncmd_arg=$cmd_arg"
+### end options parsing
+
 
 # set default targets
 if [[ ! -v targets && ! $source ]]; then
@@ -172,16 +181,31 @@ fi
 
 echo "mountpoints: ${mountpoints[*]}"
 
-##### end command line parsing ########
 
-rsync-dirs() {
-  local host=$1
-  local path=$2
-  m rsync $dry_run_arg -ahi --relative --delete "$path" "root@$host:/"
-}
 
+# pull_reexec stops us from getting into an infinite loop if there is some
+# kind of weird problem
+pulla=false
+for m in "${mountpoints[@]}"; do
+  if [[ $m == /a ]]; then
+    pulla=true
+    break
+  fi
+done
+if ! $pull_reexec && [[ $source ]] && ! $pulla ; then
+  tmpf=$(mktemp)
+  scp $source:/a/bin/distro-setup/btrbk-run $tmpf
+  if ! diff -q $tmpf $BASH_SOURCE; then
+    echo "$0: found newer version on host $source. reexecing"
+    install -T $tmpf /usr/local/bin/btrbk-run
+    m /usr/local/bin/btrbk-run --pull-reexec "${orig_args[@]}"
+    exit
+  fi
+fi
+
+
+##### end command line parsing ########
 
-m() { printf "%s: %s\n" "${0##*/}" "$*";  "$@"; }
 
 
 if ! which btrbk &>/dev/null; then
@@ -203,8 +227,9 @@ ssh_identity /root/.ssh/home
 # transaction info.
 transaction_syslog local7
 
-# 20%ish speedup[]
-stream_buffer 512m
+# note, i had this because man said 20% speedup, but ran into
+# this issue, https://github.com/digint/btrbk/issues/275
+#stream_buffer 512m
 
 # so we only run one at a time
 lockfile                   /var/lock/btrbk.lock
@@ -233,9 +258,15 @@ EOF
 
 
 
-for tg in ${targets[@]:-$HOSTNAME}; do
-  # for an initial run, btrbk requires the dir to exist.
-  ssh root@$tg mkdir -p /mnt/root/btrbk
+# for an initial run, btrbk requires the dir to exist.
+mkdir -p /mnt/root/btrbk
+local_zone=$(date +%z)
+for h in ${targets[@]} $source; do
+  zone=$(ssh root@$h "mkdir -p /mnt/root/btrbk; date +%z")
+  if [[ $zone != $local_zone ]]; then
+    echo "error: error. dont confuse yourself with multiple time zones. $h has different timezone than localhost" >&2
+    exit 1
+  fi
 done