--- /dev/null
+#!/bin/bash
+#
+# Copyright (C) 2015 Red Hat <contact@redhat.com>
+#
+# Author: Kefu Chai <kchai@redhat.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Library Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Library Public License for more details.
+#
+
+verbose=
+
+test -d ../src && export PATH=$PATH:.
+
+if ! which jq ; then
+ echo "Missing jq binary!"
+ exit 1
+fi
+
+if [ `uname` = FreeBSD ]; then
+ GETOPT=/usr/local/bin/getopt
+else
+ GETOPT=getopt
+fi
+
+function osdmap_get() {
+ local store_path=$1
+ local query=$2
+ local epoch=${3:+-v $3}
+ local osdmap=`mktemp`
+
+ $CEPH_BIN/ceph-monstore-tool $store_path get osdmap -- \
+ $epoch -o $osdmap > /dev/null || return
+
+ echo $($CEPH_BIN/osdmaptool --dump json $osdmap 2> /dev/null | \
+ jq "$query")
+
+ rm -f $osdmap
+}
+
+function test_crush() {
+ local store_path=$1
+ local epoch=$2
+ local max_osd=$3
+ local crush=$4
+ local osdmap=`mktemp`
+
+ $CEPH_BIN/ceph-monstore-tool $store_path get osdmap -- \
+ -v $epoch -o $osdmap > /dev/null
+ $CEPH_BIN/osdmaptool --export-crush $crush $osdmap &> /dev/null
+
+ if $CEPH_BIN/crushtool --test --check $max_osd -i $crush > /dev/null; then
+ good=true
+ else
+ good=false
+ fi
+ rm -f $osdmap
+ $good || return 1
+}
+
+function die() {
+ local retval=$?
+ echo "$@" >&2
+ exit $retval
+}
+
+function usage() {
+ [ $# -gt 0 ] && echo -e "\n$@"
+ cat <<EOF
+
+Usage: $0 [options ...] <mon-store>
+
+Search backward for a latest known-good epoch in monstore. Rewrite the osdmap
+epochs after it with the crush map in the found epoch if asked to do so. By
+default, print out the crush map in the good epoch.
+
+ [-h|--help] display this message
+ [--out] write the found crush map to given file (default: stdout)
+ [--rewrite] rewrite the monitor storage with the found crush map
+ [--verbose] be more chatty
+EOF
+ [ $# -gt 0 ] && exit 1
+ exit 0
+}
+
+function main() {
+ local temp
+ temp=$($GETOPT -o h --long verbose,help,mon-store:,out:,rewrite -n $0 -- "$@") || return 1
+
+ eval set -- "$temp"
+ local rewrite
+ while [ "$1" != "--" ]; do
+ case "$1" in
+ --verbose)
+ verbose=true
+ # set -xe
+ # PS4='${FUNCNAME[0]}: $LINENO: '
+ shift;;
+ -h|--help)
+ usage
+ return 0;;
+ --out)
+ output=$2
+ shift 2;;
+ --osdmap-epoch)
+ osdmap_epoch=$2
+ shift 2;;
+ --rewrite)
+ rewrite=true
+ shift;;
+ *)
+ usage "unexpected argument $1"
+ shift;;
+ esac
+ done
+ shift
+
+ local store_path="$1"
+ test $store_path || usage "I need the path to mon-store."
+
+ # try accessing the store; if it fails, likely means a mon is running
+ local last_osdmap_epoch
+ local max_osd
+ last_osdmap_epoch=$(osdmap_get $store_path ".epoch") || \
+ die "error accessing mon store at $store_path"
+ # get the max_osd # in last osdmap epoch, crushtool will use it to check
+ # the crush maps in previous osdmaps
+ max_osd=$(osdmap_get $store_path ".max_osd" $last_osdmap_epoch)
+
+ local good_crush
+ local good_epoch
+ test $verbose && echo "the latest osdmap epoch is $last_osdmap_epoch"
+ for epoch in `seq $last_osdmap_epoch -1 1`; do
+ local crush_path=`mktemp`
+ test $verbose && echo "checking crush map #$epoch"
+ if test_crush $store_path $epoch $max_osd $crush_path; then
+ test $verbose && echo "crush map version #$epoch works with osdmap epoch #$osdmap_epoch"
+ good_epoch=$epoch
+ good_crush=$crush_path
+ break
+ fi
+ rm -f $crush_path
+ done
+
+ if test $good_epoch; then
+ echo "good crush map found at epoch $epoch/$last_osdmap_epoch"
+ else
+ echo "Unable to find a crush map for osdmap version #$osdmap_epoch." 2>&1
+ return 1
+ fi
+
+ if test $good_epoch -eq $last_osdmap_epoch; then
+ echo "and mon store has no faulty crush maps."
+ elif test $output; then
+ $CEPH_BIN/crushtool --decompile $good_crush --outfn $output
+ elif test $rewrite; then
+ $CEPH_BIN/ceph-monstore-tool $store_path rewrite-crush -- \
+ --crush $good_crush \
+ --good-epoch $good_epoch
+ else
+ echo
+ $CEPH_BIN/crushtool --decompile $good_crush
+ fi
+ rm -f $good_crush
+}
+
+main "$@"
Code Review / stor4nfv.git / blobdiff