diff options
Diffstat (limited to 'src/tools/rbd_recover_tool/rbd-recover-tool')
| -rwxr-xr-x | src/tools/rbd_recover_tool/rbd-recover-tool | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/src/tools/rbd_recover_tool/rbd-recover-tool b/src/tools/rbd_recover_tool/rbd-recover-tool new file mode 100755 index 00000000..b7a25865 --- /dev/null +++ b/src/tools/rbd_recover_tool/rbd-recover-tool @@ -0,0 +1,327 @@ +#!/usr/bin/env bash +# file: rbd-recover-tool +# +# Copyright (C) 2015 Ubuntu Kylin +# +# Author: Min Chen <minchen@ubuntukylin.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. +# + +# rbd-recover-tool is an offline recover tool for rbd image in replicated pool +# when ceph cluster is stopped. +# it is a simple disater recovery policy, just for urgent condition + +my_dir=$(dirname "$0") + +. $my_dir/common_h +. $my_dir/metadata_h +. $my_dir/epoch_h +. $my_dir/database_h + +#scp files from admin node to osd node +file1=common_h +file2=metadata_h +file3=epoch_h +file4=osd_job + +#------------ admin node's action ------------- + +function scp_file() +{ + local func="scp_file" + file=$1 + if [ "$1"x = ""x ];then + echo "$func: not file input" + exit + fi + for host in `cat $osd_host` + do + { + echo "$func: $host" + scp $ssh_option $file $host:$job_path 1>/dev/null + } & + done +} + +function scp_files() +{ + local func="scp_files" + for host in `cat $osd_host` + do + { + echo "$func: $host" + scp $ssh_option $file1 $host:$job_path + scp $ssh_option $file2 $host:$job_path + scp $ssh_option $file3 $host:$job_path + scp $ssh_option $file4 $host:$job_path + } & + done + wait + echo "$func: finish" +} + +function scatter_node_jobs() +{ + local func="scatter_node_jobs" + local host= + local data_path= + echo "$func: flush osd journal & generate infos: omap, pg, image metadata ..." + + trap 'echo $func failed; exit' INT HUP + while read line + do + { + host=`echo $line|awk '{print $1}'` + data_path=`echo $line|awk '{print $2}'` + check_osd_process $host + + cmd="mkdir -p $job_path" + ssh $ssh_option $host $cmd + scp $ssh_option $file1 $host:$job_path >/dev/null + scp $ssh_option $file2 $host:$job_path >/dev/null + scp $ssh_option $file3 $host:$job_path >/dev/null + scp $ssh_option $file4 $host:$job_path >/dev/null + + cmd="bash $job_path/osd_job flush_osd_journal $data_path;" + cmd="$cmd $job_path/osd_job do_omap_list $data_path;" + cmd="$cmd bash $job_path/osd_job do_pg_epoch $data_path;" + cmd="$cmd bash $job_path/osd_job do_image_list $data_path;" + + ssh $ssh_option $host $cmd </dev/null + } & + done < $osd_host_path + wait + echo "$func: finish" +} + +function gather_node_infos() +{ + local func="gather_node_infos" + echo "$func ..." + >$pg_coll + >$image_coll_v1 + >$image_coll_v2 + trap 'echo $func failed; exit' INT HUP + while read line + do + { + host=`echo $line|awk '{print $1}'` + data_path=`echo $line|awk '{print $2}'` + echo "$func: $host" + check_osd_process $host + + #pg epoch + cmd1="bash $job_path/osd_job cat_pg_epoch $data_path" + ssh $ssh_option $host $cmd1 >> $pg_coll + #image v1 + cmd2="bash $job_path/osd_job cat_image_v1 $data_path" + ssh $ssh_option $host $cmd2 >> $image_coll_v1 + #image v2 + cmd3="bash $job_path/osd_job cat_image_v2 $data_path" + ssh $ssh_option $host $cmd3 >> $image_coll_v2 + } & + done < $osd_host_path + wait + echo "$func: finish" +} + +function scatter_gather() +{ + local func="scatter_gather" + if [ ! -s $osd_host ];then + echo "$func: no osd_host input" + exit + fi + if [ ! -s $mon_host ];then + echo "$func: no mon_host input" + exit + fi + scatter_node_jobs + gather_node_infos +} + + +#------------- operations -------------- + +function database() +{ + scatter_gather + gen_database +} + +function list() +{ + list_images +} + +function lookup() +{ + lookup_image $1 $2 $3 +} + +function recover() +{ + recover_image $1 $2 $3 $4 +} + +#------------- helper ------------- + +function usage() +{ + local cmd_name="rbd-recover-tool" + echo + echo "$cmd_name is used to recover rbd image of replicated pool, + when all ceph services are stopped" + echo "Usage:" + echo "$cmd_name database + gather pg info, object info, image metadata, + and epoch info from all osd nodes, + this will cosume a long time, just be patient, + especially when scale up to 1000+ osds" + echo "$cmd_name list + list all rbd images of all replicated pools, + before to lookup & recover" + echo "$cmd_name lookup <pool_id>/<image_name>[@[<snap_name>]] + show image metadata: image format, rbd id, size, order, snapseq + In addition, for image with snapshots, + this will list all snapshot infomations" + echo "$cmd_name recover <pool_id>/<image_name>[@[<snap_name>]] [</path/to/store/image>] + all snapshots share one image head, to economize disk space + so there is only one snapshot at any time, + image is saved at </path/to/store/image>/pool_<pool_id>/image_name/image_name + cat <path/to/store/image>/pool_<pool_id>/image_name/@CURRENT, + will show snapid + recover to raw image/nosnap/head: <image_name> + rollback to image head: <image_name>@ + rollback to image snap: <image_name>@<snap_name> + recover steps: + 1. recover image nosnap (only one time) + 2. rollback to image snap" +} + +function get_path() +{ + local func="get_path" + if [ $# -lt 1 ];then + return + fi + if [[ $1 =~ // ]];then + return # "/path//to" is invalid + fi + local parent=`dirname $1` + local name=`basename $1` + if [ "$parent"x = "/"x ];then + echo "$parent$name" + else + echo -n "$parent/$name" + fi +} + +function admin_cmd() +{ + local func="admin_cmd" + if [ $# -lt 1 ];then + usage + exit + fi + if [ "$1"x = "-h"x ] || [ "$1"x = "--help"x ];then + usage + exit + fi + + if [ "$1"x = "database"x ];then + if [ $# -gt 1 ];then + usage + exit + fi + # remove osd_host to refresh osd_host and osd_host_mapping + rm -f $osd_host + init_env_admin + database + elif [ "$1"x = "list"x ];then + if [ $# -gt 1 ];then + usage + exit + fi + init_env_admin + list + elif [ "$1"x = "lookup"x ];then + if [ $# -gt 2 ];then + usage + exit + fi + local pool_id=-1 + local image_name= + local snap_name= + if [[ $2 =~ ^([^@/]+)/([^@/]+)$ ]];then + pool_id="${BASH_REMATCH[1]}" + image_name="${BASH_REMATCH[2]}" + elif [[ $2 =~ ^([^@/]+)/([^@/]+)@([^@/]*)$ ]];then + pool_id="${BASH_REMATCH[1]}" + image_name="${BASH_REMATCH[2]}" + snap_name="${BASH_REMATCH[3]}" + else + echo "format: $2 is invalid, use <pool_id>/<image_name>[@[<snap_name>]]" + exit + fi + init_env_admin + lookup $pool_id $image_name $snap_name + elif [ "$1"x = "recover"x ];then + if [ $# -lt 2 ] || [ $# -gt 3 ];then + usage + exit + fi + local pool_id=-1 + local image_name= + local snap_name=@ + local image_dir= + if [[ $2 =~ ^([^@/]+)/([^@/]+)$ ]];then + pool_id="${BASH_REMATCH[1]}" + image_name="${BASH_REMATCH[2]}" + elif [[ $2 =~ ^([^@/]+)/([^@/]+)@([^@/]*)$ ]];then + pool_id="${BASH_REMATCH[1]}" + image_name="${BASH_REMATCH[2]}" + snap_name="${BASH_REMATCH[3]}" + if [ "$snap_name"x = ""x ];then + snap_name=@@ + fi + else + echo "format: $2 is invalid, use <pool_id>/<image_name>[@[<snap_name>]]" + exit + fi + if [ $# = 3 ];then + image_dir=`get_path $3` + if [ "image_dir"x = ""x ];then + echo "$3 invalid" + exit + fi + fi + init_env_admin + recover $pool_id $image_name $snap_name $image_dir + elif [ "$1"x = "scp_files"x ];then + if [ $# -gt 1 ];then + exit + fi + admin_parse_osd + scp_files + elif [ "$1"x = "scp_file"x ];then + if [ $# -gt 2 ];then + exit + fi + admin_parse_osd + scp_file $2 + else + echo "$func: $1: command not found" + fi +} + +admin_cmd $* |