X-Git-Url: https://iankelling.org/git/?a=blobdiff_plain;f=btrbk-run;h=5388858b946c44640ed18fa25285acfbdcb296ac;hb=dc34d23c63cd83a7cc7a79525445aad3293c7241;hp=dcca4b7dd036dca6fb662f40e9904a824160e6bd;hpb=72c18f3a6a7f1ed0ca16af654a1f804ab96e1ff9;p=distro-setup

diff --git a/btrbk-run b/btrbk-run
index dcca4b7..5388858 100644
--- a/btrbk-run
+++ b/btrbk-run
@@ -89,8 +89,9 @@ targets=()
 early=false
 cron=false
 fast=false
+kd_spread_maybe=false
 orig_args=("$@")
-temp=$(getopt -l cron,fast,pull-reexec,help 23ceil:m:npqrs:t:vh "$@") || usage 1
+temp=$(getopt -l cron,fast,pull-reexec,help 23ceikl:m:npqrs:t:vh "$@") || usage 1
 eval set -- "$temp"
 while true; do
   case $1 in
@@ -113,6 +114,8 @@ while true; do
     # switch mail-host, no need to repeat the same checks again.
     --fast) fast=true ;;
     -i) incremental_strict=true ;;
+    # note this implies resume
+    -k) kd_spread_maybe=true ;;
     # bytes per second, suffix k m g
     -l) rate_limit=$2; shift ;;
     # Comma separated mountpoints to backup. This has defaults set below.
@@ -145,7 +148,18 @@ while true; do
   shift
 done
 
-cmd_arg=${1:-run}
+cmd_arg="$1"
+
+if $kd_spread_maybe; then
+  if [[ $cmd_arg && $cmd_arg != resume ]]; then
+    die "dont pass -k without resume or empty run arg"
+  fi
+  cmd_arg=resume
+fi
+
+if [[ ! $cmd_arg ]]; then
+  cmd_arg=run
+fi
 
 
 std_preserve="36h 14d 8w 24m"
@@ -180,9 +194,6 @@ if [[ -v targets && $source ]]; then
   die "error: -t and -s are mutually exclusive"
 fi
 
-if $verbose; then
-  printf "$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
 
 # remove path from earlier version of btrbk
@@ -207,7 +218,7 @@ kd_spread=false
 if [[ ! -v targets && ! $source ]]; then
   if $cron; then
     if [[ $HOSTNAME != "$MAIL_HOST" ]]; then
-      if [[ $HOSTNAME == kd && $MAIL_HOST == x3 ]]; then
+      if $kd_spread_maybe && [[ $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
@@ -219,6 +230,8 @@ if [[ ! -v targets && ! $source ]]; then
           if [[ $MAIL_HOST == x3 ]]; then
             kd_spread=true
           else
+            # x3 was the mail host, but it moved to some other machine
+            # without updating us yet.
             echo "MAIL_HOST=$MAIL_HOST, nothing to do"
             mexit 0
           fi
@@ -261,21 +274,26 @@ if [[ ! -v targets && ! $source ]]; then
       ;;&
     *)
       if $at_home; then
-        if ! $kd_spread; then
+        if ! $kd_spread && [[ $HOSTNAME != x3 ]]; then
           # main work machine
           if ping -q -c1 -w1 x3.office.fsf.org &>/dev/null; then
             targets+=(x3.office.fsf.org)
+          elif ping -q -c1 -w1 $h.b8.nz &>/dev/null; then
+            # in case we took it home
+            targets+=(x3.b8.nz)
           else
             targets+=(x3wg.b8.nz)
           fi
         fi
-        for h in frodo kd; do
+        # temporarily disabled while doing recovery
+        #        for h in frodo kd; do
+        for h in kd; do
           if [[ $HOSTNAME == "$h" ]]; then
             continue
           fi
           targets+=($h.b8.nz)
         done
-        for h in x2 x3 sy; do
+        for h in x2 sy; do
           if [[ $HOSTNAME == "$h" ]]; then
             continue
           fi
@@ -286,11 +304,7 @@ if [[ ! -v targets && ! $source ]]; then
           fi
         done
       elif $at_work; then
-        if ping -q -c1 -w1 iank.vpn.office.fsf.org &>/dev/null; then
-          targets+=(iank.vpn.office.fsf.org)
-        else
-          targets+=(i.b8.nz)
-        fi
+        targets+=(i.b8.nz)
         for h in x2 x3 kw; do
           if [[ $HOSTNAME == "$h" ]]; then
             continue
@@ -306,14 +320,6 @@ if [[ ! -v targets && ! $source ]]; then
   esac
 fi
 
-if [[ -v targets ]]; then
-  echo "targets: ${targets[*]}"
-fi
-
-if [[ $source ]]; then
-  echo "source: $source"
-fi
-
 if [[ ${mountpoints[0]} ]]; then
   for mp in ${mountpoints[@]}; do
     if [[ -e /nocow/btrfs-stale/$mp ]]; then
@@ -345,6 +351,9 @@ else
           if [[ $HOSTNAME == "$HOST2" ]]; then
             prospective_mps+=(/a /ar /qr /q)
           fi
+          if $kd_spread; then
+            prospective_mps=(/a /ar /o /qr /q)
+          fi
         fi
         # note: put q last just in case its specific retention options were to
         # affect other config sections. I havent tested if that is the case.
@@ -362,10 +371,15 @@ else
   done
 fi
 
-echo "mountpoints: ${mountpoints[*]}"
+if (( ! ${#mountpoints[@]} )); then
+  die didnt get mountpoint arg and had no defaults
+fi
 
 ##### end command line parsing ########
 
+#### begin pre-checks #####
+
+# todo: this has a timing problem, since btrbk.timer could activate the service after this check.
 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
@@ -378,6 +392,38 @@ if ! $fast && [[ $source ]]; then
   fi
 fi
 
+if ! command -v btrbk &>/dev/null; then
+  die "error: no btrbk binary found"
+fi
+
+
+#### end pre-checks #####
+
+mkdir -p /var/log/btrbk
+# The journal doesnt go back to my oldest backups, and I've found myself
+# wanting older logs. Not going to bother expiring old logs, since it is
+# fine if they go back years.
+log_path=/var/log/btrbk/$(date +%F_%T%:::z).log
+echo copying output to $log_path
+exec &> >(ts "%F %T" | tee -a $log_path)
+
+
+if $verbose; then
+  printf "$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
+
+if [[ -v targets ]]; then
+  echo "targets: ${targets[*]}"
+fi
+
+if [[ $source ]]; then
+  echo "source: $source"
+fi
+
+echo "mountpoints: ${mountpoints[*]}"
+
+
+
 # pull_reexec stops us from getting into an infinite loop if there is some
 # kind of weird problem
 pulla=false
@@ -401,10 +447,6 @@ if ! $pull_reexec && [[ $source ]] && $pulla ; then
 fi
 
 
-if ! command -v btrbk &>/dev/null; then
-  die "error: no btrbk binary found"
-fi
-
 if ! $fast; then
   # if our mountpoints are from stale snapshots,
   # it doesn't make sense to do a backup.
@@ -434,23 +476,27 @@ else
 
   sshable=()
   sshfail=()
-  min_idle_ms=$((1000 * 60 * 15))
   for h in ${targets[@]}; do
     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]%%%}
-
-      if (( ${#remote_info[@]} != 3 )); then
-        die "error: didnt get 3 fields in test ssh to target $h. investigate"
+    elif remote_str=$(timeout -s 9 6 ssh root@$h "mkdir -p /mnt/root/btrbk /mnt/o/btrbk && date +%z && df --output=size,pcent / | tail -n1"); then
+      mapfile -t tmp_array <<<"$remote_str"
+      zone="${tmp_array[0]}"
+      IFS=" " read -r root_size percent_used <<<"${tmp_array[1]}"
+      percent_used=${percent_used%%%}
+
+      if (( ${#tmp_array[@]} != 2 )); then
+        die "error: didnt get 2 lines in test ssh to target $h. investigate"
       fi
+      case $percent_used in
+        [0-9]|[1-9][0-9]) : ;;
+        *)
+          die "error: didnt get percent disk use in test ssh to target $h. investigate"
+          ;;
+      esac
     else
       sshfail+=($h)
       continue
@@ -466,15 +512,26 @@ else
       die "error: filesystem on target $h is $percent_used % full"
     fi
 
-    # This is a separate ssh because xprintidle can fail and thats ok.
-    if $cron && idle_ms=$(timeout -s 9 6 ssh $h DISPLAY=:0 xprintidle); then
-      if (( idle_ms < min_idle_ms )); then
-
+    # on sy, xprintidle is resetting every 12 seconds even when not
+    # idle, i dunno why, instead we are checking if the screen is locked,
+    # which is good enough.
+    #
+    # This is a separate ssh because the command can fail and thatis ok.
+    if $cron; then
+      locked=false
+      if lock_info=$(timeout -s 9 6 ssh $h DISPLAY=:0 xscreensaver-command -time); then
+        if [[ $lock_info != *non-blanked* ]]; then
+          locked=true
+        fi
+      else
+        locked=true
+      fi
+      if ! $locked; then
         # Ignore this host. i sometimes use a non-main machine for
         # testing or web browsing, knowing that everything will be wiped
         # by the next backup, but I dont want it to happen as Im using
         # it from cronjob.
-        e "warning: $h: active X session in the last 15 minutes, skipping for now"
+        e "warning: $h: seems to be actively in use, skipping for now"
         continue
       fi
     fi
@@ -522,11 +579,11 @@ snapshot_create onchange
 # if one disk had less space.
 # for now, keeping them equal.
 snapshot_preserve $std_preserve
-snapshot_preserve_min 2h
+snapshot_preserve_min 6h
 snapshot_dir btrbk
 # so, total backups = ~58
 target_preserve $std_preserve
-target_preserve_min 2h
+target_preserve_min 6h
 
 # i tried this when investigating: clone no source subvolume found error
 #incremental_prefs sro:1 srn:1 sao san:1 aro:1 arn:1
@@ -654,14 +711,20 @@ done
 if [[ $source ]]; then
   m mount-latest-subvol "${subvols[@]}"
 else
-  m /a/exe/mount-latest-remote ${targets[@]}
+  for tg in ${targets[@]}; do
+    m /a/exe/mount-latest-remote "$tg" "${subvols[@]}" || ret=$?
+  done
 fi
 
 if [[ $ret == 0 ]]; then
   for tg in ${targets[@]}; do
-    :
-    #ssh root@$tg /a/exe/mail-backup-clean
+    h=$(ssh root@$tg hostname)
+    rsync -a /var/log/btrbk $tg:/var/log/btrbk/$tg
+    ssh root@$tg /usr/local/bin/mail-backup-clean
   done
+  if [[ $source ]]; then
+    rsync -a $source:/var/log/btrbk /var/log/btrbk/$source
+  fi
 fi
 
 mexit $ret