X-Git-Url: https://iankelling.org/git/?a=blobdiff_plain;f=btrfsmaint;fp=btrfsmaint;h=4de4b765ea951022864c989f4b60f9885ce981a4;hb=f46ee5570766081a5a73ce0d2132c8a06ee966fb;hp=d2263257d412b4da2d9e37e5c1678641e301e8f6;hpb=ad6ea16ea6f2a8676527257fb6afb659f2cee475;p=distro-setup

diff --git a/btrfsmaint b/btrfsmaint
deleted file mode 100755
index d226325..0000000
--- a/btrfsmaint
+++ /dev/null
@@ -1,217 +0,0 @@
-#!/bin/bash
-
-
-[[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
-
-source /a/bin/errhandle/err
-
-# inspired from
-# https://github.com/kdave/btrfsmaintenance
-
-
-# Man page says we could also use a range, i suppose it would be
-# logical to use a pattern like 5..10 10..20,
-# but I don't know if this would help us at all.
-dusage="5 10"
-musage="5"
-
-e() {
-  echo "cron: $*"
-  if ! $dryrun; then
-    "$@"
-  fi
-}
-
-check-idle() {
-  type -p xprintidle &>/dev/null || return 0
-  export DISPLAY=:0
-  # a hours, a movie could run that long.
-  idle_limit=$((1000 * 60 * 60 * 2))
-  idle_time=$idle_limit
-  while read -r user; do
-    new_idle_time=$(sudo -u $user xprintidle 2>/dev/null) ||:
-    if [[ $new_idle_time && $new_idle_time -lt $idle_time ]]; then
-      idle_time=$new_idle_time
-    fi
-  done < <(users | tr " " "\n" | sort -u)
-  if (( idle_time < idle_limit )); then
-    idle=false
-  else
-    idle=true
-  fi
-}
-
-usage() {
-  cat <<EOF
-Usage: ${0##*/} [ARGS]
-Do btrfs maintence or stop if xprintidle shows a user
-
-force  Run regardless of user idle status on all disks and do scrub
-       regardless of when it was last run.
-check  Only check if an existing maintence should be cancelled due to
-         nonidle user. Also, runs in a loop every 20 seconds for 10
-         minutes.
-
-Note: Uses util-linux getopt option parsing: spaces between args and
-options, short options can be combined, options before args.
-EOF
-  exit $1
-}
-
-
-force=false
-check=false
-dryrun=false
-if [[ $1 ]]; then
-  case $1 in
-    check)
-      check=true
-      ;;
-    force)
-      force=true
-      ;;
-    dryrun)
-      dryrun=true
-      ;;
-    *)
-      echo "$0: error: unexpected arg" >&2
-      usage 1
-      ;;
-  esac
-fi
-
-
-main() {
-  idle=true
-  if ! $force; then
-    check-idle
-    if ! $check; then
-      min=0
-      max_min=300
-      # When the cron kicks in, we may not be idle (physically sleeping) yet, so
-      # wait.
-      while ! $idle && (( min < max_min )); do
-        min=$(( min + 1 ))
-        sleep 60
-        check-idle
-      done
-      # If we've waited a really long time for idle, just give up.
-      if (( min == max_min )); then
-        return
-      fi
-    fi
-  fi
-
-
-  fnd="findmnt --types btrfs --noheading"
-  for x in $($fnd --output "SOURCE" --nofsroot | sort -u); do
-    mnt=$($fnd --output "TARGET" --first-only --source $x)
-    [[ $mnt ]] || continue
-
-    #### begin look for diff in stats, eg: increasing error count ####
-
-    # Only run for $check, since it runs in parallel to non-check, avoid
-    # race condition.
-    if $check; then
-      tmp=$(mktemp)
-      # if mnt is /, avoid making a buggy looking path
-      stats_path=${mnt%/}/btrfs-dev-stats
-      if [[ ! -e $stats_path ]]; then
-        btrfs dev stats -c $mnt >$stats_path ||: # populate initial reading
-      elif ! btrfs dev stats -c $mnt >$tmp; then
-        if ! diff -q $stats_path $tmp; then
-              exim -t <<EOF
-From: root@$HOSTNAME.b8.nz
-To: alerts@iankelling.org
-Subject: btrfsmaintstop: btrfs dev stats -c $mnt
-
-$(diff -u $stats_path $tmp ||:)
-EOF
-          mv $stats_path $stats_path.1
-          cat $tmp >$stats_path
-        fi
-      fi
-      rm -f $tmp
-    fi
-    #### end look for diff in stats, eg: increasing error count ####
-
-    if $check; then
-      if ! $idle; then
-        if $dryrun; then
-          echo "$0: not idle. if this wasnt a dry run, btrfs scrub cancel $mnt"
-        else
-          btrfs scrub cancel $mnt &>/dev/null ||:
-        fi
-      fi
-      continue
-    fi
-
-    # for comparing before and after balance.
-    # the log is already fairly verbose, so commented.
-    # e btrfs filesystem df $mnt
-    # e df -H $mnt
-    if btrfs filesystem df $mnt | grep -q "Data+Metadata"; then
-      for usage in $dusage; do
-        e ionice -c 3 btrfs balance start -dusage=$usage -musage=$usage $mnt
-      done
-    else
-      e ionice -c 3 btrfs balance start -dusage=0 $mnt
-      for usage in $dusage; do
-        e ionice -c 3 btrfs balance start -dusage=$usage $mnt
-      done
-      e ionice -c 3 btrfs balance start -musage=0 $mnt
-      for usage in $musage; do
-        e ionice -c 3 btrfs balance start -musage=$usage $mnt
-      done
-    fi
-    date=
-    scrub_status=$(btrfs scrub status $mnt)
-    if printf "%s\n" "$scrub_status" | grep -i '^status:[[:space:]]*finished$' &>/dev/null; then
-      date=$(printf "%s\n" "$scrub_status" | sed -rn 's/^Scrub started:[[:space:]]*(.*)/\1/p')
-    fi
-    if [[ ! $date ]]; then
-      # output from older versions, at least btrfs v4.15.1
-      date=$(
-        printf "%s\n" "$scrub_status" | \
-          sed -rn 's/^\s*scrub started at (.*) and finished.*/\1/p'
-          )
-    fi
-    if ! $force && [[ $date ]]; then
-      if $dryrun; then
-        echo "$0: last scrub finish for $mnt: $date"
-      fi
-      date=$(date --date="$date" +%s)
-      # if date is sooner than 60 days ago
-      # the wiki recommends 30 days or so, but
-      # I'm going with 60 days.
-      if (( date > EPOCHSECONDS - 60*60*24*60 )); then
-        if $dryrun; then
-          echo "$0: skiping scrub of $mnt, last was $(( (EPOCHSECONDS - date) / 60/60/24 )) days ago, < 30 days"
-        fi
-        continue
-      fi
-    fi
-    # btrfsmaintenance does -c 2 -n 4, but I want lowest pri.
-    e btrfs scrub start -Bd -c 3 $mnt
-
-    # We normally only do one disk since this is meant to be run while I sleep
-    # and if we try to do all disks, we invariably end up doing a scrub still
-    # after I've woken up. So, just do one per day.
-    if ! $force; then
-      return 0
-    fi
-  done
-}
-
-loop-main() {
-  while true; do
-    main
-    sleep 60
-  done
-}
-
-if $check; then
-  loop-main
-else
-  main
-fi
diff --git a/btrfsmaint b/btrfsmaint
new file mode 120000
index 0000000..4de4b76
--- /dev/null
+++ b/btrfsmaint
@@ -0,0 +1 @@
+/a/f/ans/roles/btrfs/files/btrfsmaint
\ No newline at end of file