X-Git-Url: https://iankelling.org/git/?a=blobdiff_plain;f=btrbk-run;h=dcca4b7dd036dca6fb662f40e9904a824160e6bd;hb=72c18f3a6a7f1ed0ca16af654a1f804ab96e1ff9;hp=51c2ed6abaaf648397922e67ba0e86859b4b9a4e;hpb=fde3746c622eb042ce1fd051cdfea2f9a247cd53;p=distro-setup

diff --git a/btrbk-run b/btrbk-run
index 51c2ed6..dcca4b7 100644
--- a/btrbk-run
+++ b/btrbk-run
@@ -40,7 +40,9 @@ EOF
 
 
 
-pre="${0##*/}: "
+script_name="${BASH_SOURCE[0]}"
+script_name="${script_name##*/}"
+pre="${SSH_CLIENT:+$HOSTNAME} $script_name:"
 m() { if $verbose; then printf "$pre%s\n"  "$*"; fi;  "$@"; }
 e() { printf "$pre%s\n"  "$*"; }
 die() { printf "$pre%s\n" "$*" >&2; echo "exiting with status 1" >&2; exit 1; }
@@ -75,6 +77,7 @@ pull_reexec=false
 
 default_args_file=/etc/btrbk-run.conf
 if [[ -s $default_args_file ]]; then
+  # shellcheck disable=SC2046 # we want word splitting
   set -- $(< $default_args_file) "$@"
   # i havent used this feature yet, so warn about it
   echo "$0: warning: default btrbk-run options set in $default_args_file (sleeping 5 seconds):"
@@ -82,10 +85,12 @@ if [[ -s $default_args_file ]]; then
   sleep 5
 fi
 
+targets=()
 early=false
 cron=false
+fast=false
 orig_args=("$@")
-temp=$(getopt -l cron,pull-reexec,help ceil:m:npqrs:t:vh "$@") || usage 1
+temp=$(getopt -l cron,fast,pull-reexec,help 23ceil:m:npqrs:t:vh "$@") || usage 1
 eval set -- "$temp"
 while true; do
   case $1 in
@@ -96,24 +101,29 @@ while true; do
     --cron)
       cron=true
       pre=
-      shift
       ;;
+    # for the rare case we want to run multiple instances at the same time
+    -2) conf_suf=2 ;;
+    -3) conf_suf=3 ;;
     # only creates the config file, does not run btrbk
-    -c) conf_only=true; shift ;;
+    -c) conf_only=true ;;
     # quit early, just btrbk, no extra remounting etc.
-    -e) early=true; shift ;;
-    -i) incremental_strict=true; shift ;;
+    -e) early=true ;;
+    # skip various checks. when we run twice in a row for
+    # switch mail-host, no need to repeat the same checks again.
+    --fast) fast=true ;;
+    -i) incremental_strict=true ;;
     # bytes per second, suffix k m g
-    -l) rate_limit=$2; shift 2 ;;
+    -l) rate_limit=$2; shift ;;
     # Comma separated mountpoints to backup. This has defaults set below.
-    -m) IFS=, mountpoints=($2); unset IFS; shift 2 ;;
-    -n) dry_run=true; dry_run_arg=-n; shift ;;
+    -m) IFS=, mountpoints=($2); unset IFS; shift ;;
+    -n) dry_run=true ;;
     # hide progress
-    -p) progress_arg=; shift ;;
+    -p) progress_arg= ;;
     # internal option for rerunning under newer SOURCE_HOST version.
-    --pull-reexec) pull_reexec=true; shift ;;
+    --pull-reexec) pull_reexec=true;;
     # quiet
-    -q) verbose=false; verbose_arg=; progress_arg=; shift ;;
+    -q) verbose=false; verbose_arg=; progress_arg= ;;
     # source host to receive a backup from
     -s)
       source=$2
@@ -121,24 +131,25 @@ while true; do
       if [[ $source == *:* ]]; then
         bbksource="[$source]"
       fi
-      shift 2
+      shift
       ;;
     # target hosts to send to. empty is valid for just doing local
     # snapshot. we have default hosts we will populate.
-    -t) IFS=, targets=($2); unset IFS; shift 2 ;;
+    -t) IFS=, targets=($2); unset IFS; shift ;;
     # verbose.
-    -v) verbose=true; verbose_arg=-v; shift ;;
+    -v) verbose=true; verbose_arg=-v ;;
     -h|--help) usage ;;
     --) shift; break ;;
     *) die "Internal error!" ;;
   esac
+  shift
 done
 
 cmd_arg=${1:-run}
 
 
 std_preserve="36h 14d 8w 24m"
-q_preserve="18h 14d"
+q_preserve="18h 14d 8w"
 
 case $cmd_arg in
   run|resume) : ;;
@@ -170,7 +181,7 @@ if [[ -v targets && $source ]]; then
 fi
 
 if $verbose; then
-  printf "options: conf_only=%s\ndry_run=%s\nrate_limit=%s\nverbose=%s\ncmd_arg=%s" "$conf_only" "$dry_run" "$rate_limit" "$verbose" "$cmd_arg"
+  printf "$pre options: conf_only=%s\ndry_run=%s\nrate_limit=%s\nverbose=%s\ncmd_arg=%s" "$conf_only" "$dry_run" "$rate_limit" "$verbose" "$cmd_arg"
 fi
 ### end options parsing
 
@@ -190,79 +201,108 @@ fi
 # targets, plus any given on the command line.
 
 
-amy=false
+
+kd_spread=false
 # set default targets
 if [[ ! -v targets && ! $source ]]; then
-  if [[ $HOSTNAME != "$MAIL_HOST" ]] && $cron ; then
-    echo "MAIL_HOST=$MAIL_HOST, nothing to do"
-    mexit 0
-  else
-    amy=true
+  if $cron; then
+    if [[ $HOSTNAME != "$MAIL_HOST" ]]; then
+      if [[ $HOSTNAME == kd && $MAIL_HOST == x3 ]]; then
+        if ping -q -c1 -w1 x3.office.fsf.org &>/dev/null; then
+          work_host=x3.office.fsf.org
+        elif ping -q -c1 -w1 x3wg.b8.nz &>/dev/null; then
+          work_host=x3wg.b8.nz
+        fi
+        if [[ $work_host ]]; then
+          source_state="$(ssh $work_host cat /a/bin/bash_unpublished/source-state)"
+          eval "$source_state"
+          if [[ $MAIL_HOST == x3 ]]; then
+            kd_spread=true
+          else
+            echo "MAIL_HOST=$MAIL_HOST, nothing to do"
+            mexit 0
+          fi
+        else
+          echo "MAIL_HOST=$MAIL_HOST, nothing to do"
+          mexit 0
+        fi
+      else
+        echo "MAIL_HOST=$MAIL_HOST, nothing to do"
+        mexit 0
+      fi
+    fi
   fi
 
   at_work=false
+  at_home=false
 
-  # todo, fix this up once frodo is back
-  # targets=(frodo.b8.nz)
   case $HOSTNAME in
-    x2|kw)
+    kw|kd|frodo|x2|x3|sy) : ;;
+    *)
+      die "error: no default targets for this host, use -t"
+      ;;
+  esac
+
+  case $HOSTNAME in
+    kw)
       at_work=true
       ;;&
-    x2|x3|sy|bo)
-      if ping -q -c1 -w1 hal.office.fsf.org \
+    kd|frodo)
+      at_home=true
+      ;;&
+    x2|x3|sy)
+      if [[ $(dig +short @10.2.0.1 -x 10.2.0.2 2>&1 ||:) == kd.b8.nz. ]] \
+           && ip n show 10.2.0.1 | grep . &>/dev/null; then
+        at_home=true
+      elif ping -q -c1 -w1 hal.office.fsf.org &>/dev/null \
           && ip n show 192.168.0.26 | grep . &>/dev/null; then
         at_work=true
       fi
       ;;&
-    kw|x2|x3|sy|bo)
-      if $at_work; then
+    *)
+      if $at_home; then
+        if ! $kd_spread; then
+          # main work machine
+          if ping -q -c1 -w1 x3.office.fsf.org &>/dev/null; then
+            targets+=(x3.office.fsf.org)
+          else
+            targets+=(x3wg.b8.nz)
+          fi
+        fi
+        for h in frodo kd; do
+          if [[ $HOSTNAME == "$h" ]]; then
+            continue
+          fi
+          targets+=($h.b8.nz)
+        done
+        for h in x2 x3 sy; do
+          if [[ $HOSTNAME == "$h" ]]; then
+            continue
+          fi
+          if ping -q -c1 -w1 $h.b8.nz &>/dev/null; then
+            targets+=($h.b8.nz)
+          elif ping -q -c1 -w1 ${h}w.b8.nz &>/dev/null; then
+            targets+=(${h}w.b8.nz)
+          fi
+        done
+      elif $at_work; then
         if ping -q -c1 -w1 iank.vpn.office.fsf.org &>/dev/null; then
-          home=iank.vpn.office.fsf.org
+          targets+=(iank.vpn.office.fsf.org)
         else
-          home=i.b8.nz
+          targets+=(i.b8.nz)
         fi
+        for h in x2 x3 kw; do
+          if [[ $HOSTNAME == "$h" ]]; then
+            continue
+          fi
+          if ping -q -c1 -w1 $h.office.fsf.org &>/dev/null; then
+            targets+=($h.office.fsf.org)
+          fi
+        done
       else
-        home=b8.nz
-      fi
-      ;;&
-    x2)
-      targets+=($home)
-      ;;
-    kw)
-      targets+=($home x2.office.fsf.org)
-      ;;
-    x3|sy|bo)
-      targets+=($home)
-      if $at_work; then
-        targets+=(x2.office.fsf.org x2.b8.nz)
-      else
-        targets+=(x2wg.b8.nz)
-      fi
-      ;;
-    kd)
-      if ping -q -c1 -w1 x2.office.fsf.org &>/dev/null; then
-        targets+=(x2.office.fsf.org)
-      else
-        targets+=(x2wg.b8.nz)
-      fi
-      if ping -q -c1 -w1 sy.b8.nz &>/dev/null; then
-        targets+=(sy.b8.nz)
-      else
-        targets+=(syw.b8.nz)
-      fi
-      if ping -q -c1 -w1 x3.b8.nz &>/dev/null; then
-        targets+=(x3.b8.nz)
-      else
-        targets+=(x3w.b8.nz)
+        targets+=(i.b8.nz)
       fi
       ;;
-    frodo)
-      # no targets
-      targets=()
-      ;;
-    *)
-      die "error: no default targets for this host, use -t"
-      ;;
   esac
 fi
 
@@ -286,9 +326,6 @@ else
     prospective_mps=(/a)
   else
     case $HOSTNAME in
-      frodo)
-        prospective_mps=(/i)
-        ;;
       *)
         prospective_mps=()
         if [[ $source ]]; then
@@ -329,7 +366,7 @@ echo "mountpoints: ${mountpoints[*]}"
 
 ##### end command line parsing ########
 
-if [[ $source ]]; then
+if ! $fast && [[ $source ]]; then
   if [[ $(ssh $source ps --no-headers -o comm 1) == systemd ]]; then
     status=$(ssh $source systemctl is-active btrbk.service) || : # normally returns 3
     case $status in
@@ -367,33 +404,46 @@ fi
 if ! command -v btrbk &>/dev/null; then
   die "error: no btrbk binary found"
 fi
-# if our mountpoints are from stale snapshots,
-# it doesn't make sense to do a backup.
-check-subvol-stale ${mountpoints[@]} || die "found stale mountpoints in ${mountpoints[*]}"
 
-# for an initial run, btrbk requires the dir to exist.
-mkdir -p /mnt/{root,o}/btrbk
+if ! $fast; then
+  # if our mountpoints are from stale snapshots,
+  # it doesn't make sense to do a backup.
+  m check-subvol-stale ${mountpoints[@]} || die "found stale mountpoints in ${mountpoints[*]}"
+
+  # for an initial run, btrbk requires the dir to exist.
+  mkdir -p /mnt/{root,o}/btrbk
+fi
 local_zone=$(date +%z)
 
 if [[ $source ]]; then
-  if ! zone=$(ssh root@$source date +%z); then
-    if $conf_only; then
-      echo "$0: warning: failed to ssh to root@$source"
-    else
-      die failed to ssh to root@$source
+  if $fast; then
+    zone=$local_zone
+  else
+    if ! zone=$(ssh root@$source date +%z); then
+      if $conf_only; then
+        echo "$0: warning: failed to ssh to root@$source"
+      else
+        die failed to ssh to root@$source
+      fi
+    fi
+    if [[ $zone != "$local_zone" ]]; then
+      die "error: dont confuse yourself with multiple time zones. $h has different timezone than localhost"
     fi
   fi
-  if [[ $zone != "$local_zone" ]]; then
-    die "error: dont confuse yourself with multiple time zones. $h has different timezone than localhost"
-  fi
-
 else
 
   sshable=()
   sshfail=()
   min_idle_ms=$((1000 * 60 * 15))
   for h in ${targets[@]}; do
-    if remote_info=( $(timeout -s 9 6 ssh root@$h "mkdir -p /mnt/root/btrbk /mnt/o/btrbk && date +%z && df --output=size,pcent / | tail -n1") ); then
+    if $fast || $conf_only; then
+      # Use some typical values in this case
+      root_size=$(( 1024 * 1024 * 2000 )) #2tb
+      percent_used=10
+      zone=$(date +%z)
+    elif tmpstr=$(timeout -s 9 6 ssh root@$h "mkdir -p /mnt/root/btrbk /mnt/o/btrbk && date +%z && df --output=size,pcent / | tail -n1"); then
+      IFS=" " read -r -a remote_info <<<"$tmpstr"
+
       zone=${remote_info[0]}
       root_size=${remote_info[1]}
       percent_used=${remote_info[2]%%%}
@@ -401,11 +451,6 @@ else
       if (( ${#remote_info[@]} != 3 )); then
         die "error: didnt get 3 fields in test ssh to target $h. investigate"
       fi
-    elif $conf_only; then
-      # Use some typical values in this case
-      root_size=$(( 1024 * 1024 * 2000 )) #2tb
-      percent_used=10
-      zone=$(date +%z)
     else
       sshfail+=($h)
       continue
@@ -450,7 +495,7 @@ else
 fi
 
 
-cat >/etc/btrbk.conf <<EOF
+cat >/etc/btrbk$conf_suf.conf <<EOF
 ssh_identity /q/root/h
 #ssh_identity /root/.ssh/home
 
@@ -463,10 +508,10 @@ ssh_identity /q/root/h
 transaction_syslog local7
 
 # trying this out
-stream_compress zstd
+#stream_compress zstd
 
 # so we only run one at a time
-lockfile                   /var/lock/btrbk.lock
+lockfile                   /var/lock/btrbk$conf_suf.lock
 
 # default format of short does not accomidate hourly preservation setting
 timestamp_format long-iso
@@ -483,6 +528,9 @@ snapshot_dir btrbk
 target_preserve $std_preserve
 target_preserve_min 2h
 
+# i tried this when investigating: clone no source subvolume found error
+#incremental_prefs sro:1 srn:1 sao san:1 aro:1 arn:1
+
 # if something fails and it's not obvious, try doing
 # btrbk -l debug -v dryrun
 
@@ -490,11 +538,36 @@ rate_limit $rate_limit
 EOF
 
 if $incremental_strict; then
-  cat >>/etc/btrbk.conf <<EOF
+  cat >>/etc/btrbk$conf_suf.conf <<EOF
 incremental strict
 EOF
 fi
 
+qconf() {
+  case $sub in
+    q)
+      # q has sensitive data i dont want to backup for so long
+      cat >>/etc/btrbk$conf_suf.conf <<EOF
+snapshot_preserve $q_preserve
+snapshot_preserve_min 2h
+snapshot_dir btrbk
+target_preserve $q_preserve
+target_preserve_min 2h
+EOF
+      ;;
+  esac
+
+}
+
+# make /q be last
+mp_count=${#mountpoints[@]}
+for (( i=0; i < mp_count - 1 ; i++ )); do
+  if [[ ${mountpoints[i]} == /q ]]; then
+    unset "mountpoints[i]"
+    mountpoints+=(/q)
+  fi
+done
+
 for m in ${mountpoints[@]}; do
   case $m in
     /o)
@@ -507,51 +580,33 @@ for m in ${mountpoints[@]}; do
 
   sub=${m#/}
   if [[ $source ]]; then
-    cat >>/etc/btrbk.conf <<EOF
+    cat >>/etc/btrbk$conf_suf.conf <<EOF
 volume ssh://$bbksource$vol
 subvolume $sub
+EOF
+    qconf
+    cat >>/etc/btrbk$conf_suf.conf <<EOF
 target send-receive $vol/btrbk
 EOF
   fi
   if (( ${#targets[@]} )); then
-    cat >>/etc/btrbk.conf <<EOF
+    cat >>/etc/btrbk$conf_suf.conf <<EOF
 volume $vol
 subvolume $sub
 EOF
-    case $sub in
-      q)
-        # q has sensitive data i dont want to backup for so long
-        cat >>/etc/btrbk.conf <<EOF
-snapshot_preserve $std_preserve
-snapshot_preserve_min 2h
-snapshot_dir btrbk
-target_preserve $std_preserve
-target_preserve_min 2h
-EOF
-        ;;
-    esac
+    qconf
     for tg in ${targets[@]}; do
       # handle ipv6
       if [[ $tg == *:* ]]; then
         tg="[$tg]"
       fi
-      cat >>/etc/btrbk.conf <<EOF
+      cat >>/etc/btrbk$conf_suf.conf <<EOF
 target send-receive ssh://$tg$vol/btrbk
 EOF
     done
   fi
 done
 
-# if $amy; then
-#   # to manually backup amy,
-#   # bbk -e -s amy -m root_ubuntubionic
-#   cat >>/etc/btrbk.conf <<'EOF'
-# volume ssh://amy/mnt/root
-# subvolume root_ubuntubionic
-# target send-receive /mnt/root/btrbk
-# EOF
-# fi
-
 # todo: umount first to ensure we don't have any errors
 # todo: do some kill fuser stuff to make umount more reliable
 
@@ -563,12 +618,16 @@ fi
 
 
 if $dry_run; then
-  m btrbk -v -n $cmd_arg
+  m btrbk -c /etc/btrbk$conf_suf.conf -v -n $cmd_arg
   mexit 0
 fi
 # -q and just using the syslog option seemed nice,
 # but it doesn't show when a send has a parent and when it doesn't.
-m btrbk $preserve_arg $verbose_arg $progress_arg $cmd_arg
+m btrbk -c /etc/btrbk$conf_suf.conf $preserve_arg $verbose_arg $progress_arg $cmd_arg
+
+if $early; then
+  exit 0
+fi
 
 # todo: tp not valid anymore.
 # if we have it, sync to systems which don't
@@ -588,8 +647,12 @@ if mountpoint $rsync_mountpoint >/dev/null; then
   done
 fi
 
+subvols=()
+for mp in "${mountpoints[@]}"; do
+  subvols+=("${mp##*/}")
+done
 if [[ $source ]]; then
-  m mount-latest-subvol
+  m mount-latest-subvol "${subvols[@]}"
 else
   m /a/exe/mount-latest-remote ${targets[@]}
 fi