--- /dev/null
+#!/bin/bash
+# file: database_h
+#
+# 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.
+#
+
+my_dir=$(dirname "$0")
+
+. $my_dir/common_h
+. $my_dir/metadata_h
+. $my_dir/epoch_h
+
+db_image_prefix=
+db_image_size=
+db_order=
+db_snap_id=
+db_snap_image_size=
+found=0
+
+#init osd_data and get all objects path
+function gen_database()
+{
+ local func="gen_database"
+ rm -rf $database/*
+ rm -rf $images
+ rm -rf $raw
+ mkdir -p $database
+ local host=
+ local data_path=
+
+ trap 'echo $func failed; exit;' INT HUP
+ while read line
+ do
+ {
+ host=`echo $line|awk '{print $1}'`
+ data_path=`echo $line|awk '{print $2}'`
+ if [ "$host"x = ""x ] || [ "$data_path"x = ""x ];then
+ continue
+ fi
+ local cmds="find $data_path/current -type f"
+ ssh $ssh_option $host $cmds > $database/$host
+ } &
+ done < $osd_host_path
+ wait
+ echo "$func: finish"
+}
+
+# collect hobjects from database
+# and choose the object whose epoch is latest
+# then, sort the objects by their offsets in image
+function gather_hobject_common()
+{
+ func="gather_hobject_common"
+
+ trap 'echo $func failed; exit;' INT HUP
+ if [ $# -lt 2 ];then
+ echo "$func: parameters: <pool_id> <image_prefix> [<snap_id>]"
+ exit
+ fi
+
+ local pool_id=$1
+ local image_prefix=$2
+ pool_id=$(($pool_id))
+ local hex_pool_id=`printf "%x" $pool_id`
+ # NOSNAP = uint64(-2)
+ local snap_id=`printf "%u" -2`
+ local hex_snap_id="head"
+ local psuffix=
+ local fsuffix="_head"
+ if [ $# = 3 ];then
+ snap_id=$(($3))
+ hex_snap_id=`printf "%x" $snap_id`
+ psuffix="_"$snap_id
+ fsuffix="_"$snap_id
+ fi
+ local underline_image_prefix=`convert_underline $image_prefix`
+ local dump_image_prefix=`dump_backslash $underline_image_prefix`
+ local ddump_image_prefix=`dump_dump_backslash $underline_image_prefix`
+ local images_raw_dir=$rbd_image/raw
+ local image_hobjects_dir=$images/pool_$pool_id/$image_prefix
+ # $images/raw/$image_prefix"_head"
+ local image_hobjects_raw=$images_raw_dir/$image_prefix"$fsuffix"
+ # $images/$image_prefix/$image_prefix"_head"
+ local image_hobjects_stable=$image_hobjects_dir/$image_prefix"$fsuffix"
+
+ if [ ! -e $images_raw_dir ];then
+ mkdir -p $images_raw_dir
+ fi
+ if [ ! -e $image_hobjects_dir ];then
+ local image_metadata=$images_meta/$image_name_in
+ mkdir -p $image_hobjects_dir
+ fi
+
+ pushd $database >/dev/null
+ local pattern="\.[0-9a-f]+__"$hex_snap_id"_[0-9A-F]{8}__"$hex_pool_id
+ >$image_hobjects_raw
+ grep -r -E $dump_image_prefix""$pattern * >$image_hobjects_raw
+ if [ ! -s $image_hobjects_raw ];then
+ echo "$func: image snap [ $image_prefix"$psuffix" ] is empty"
+ return 1 #no data available
+ fi
+ popd >/dev/null
+
+ local offset_dir_temp=$images_raw_dir/$image_prefix"$fsuffix""_dir_temp"
+ rm -rf $offset_dir_temp
+ mkdir -p $offset_dir_temp
+
+ echo "gather hobjects from database: snapid=$snap_id ..."
+
+ # format: ceph2:/var/lib/ceph/osd/ceph-1/current/2.d3_head/rb.0.1293.6b8b4567.000000000002__head_FB425CD3__2
+ local tmp_image=$offset_dir_temp/tmpimage.$$$$
+ >$tmp_image
+ cat $image_hobjects_raw |
+ awk -F ':' '
+ BEGIN {
+ pg_coll="'$pg_coll'"
+ tmp_image="'$tmp_image'"
+ osd_host_mapping="'$osd_host_mapping'"
+ snapid="'$snap_id'"
+ }{
+ # $2 = /var/lib/ceph/osd/ceph-1/current/2.d3_head/rb.0.1293.6b8b4567.000000000002__head_FB425CD3__2
+
+ split($2, arr1, "/current/"); # {/var/lib/ceph/osd/ceph-1/, 2.d3_head/rb.0.1293.6b8b4567.000000000002__head_FB425CD3__2}
+ split(arr1[2], arr2, "/"); # {2.d3_head, rb.0.1293.6b8b4567.000000000002__head_FB425CD3__2}
+ split(arr2[1], arr3, "_head"); # {2.d3,}
+
+ hobject=$2;
+ data_path=arr1[1];
+ gsub(/\\u/, "\\\\\\\\u", hobject); # dump backslash to delay escape (\ -> \\)
+ "awk \"\\$1 == \\\""$1"\\\" {print \\$2}\" "osd_host_mapping" | head -n 1" | getline node
+ pgid = arr3[1];
+
+ len=length(arr2);
+ offset_hobject=arr2[len] # rb.0.1293.6b8b4567.000000000002__head_FB425CD3__2
+ split(offset_hobject, offarr1, "."); # {rb, 0, 1293, 6b8b4567, 000000000002__head_FB425CD3__2}
+ len1=length(offarr1)
+ offset_p=offarr1[len1] # 000000000002__head_FB425CD3__2
+ split(offset_p, offarr2, "__"); # {000000000002, head_FB425CD3, 2}
+ offset=offarr2[1]; # 000000000002
+
+ system("echo -n \""node" "pgid" "hobject" "offset" "snapid" \" >>"tmp_image);
+ #system("echo -n \""node" "pgid" "hobject" "offset" "snapid" \"");
+ #print node" "pgid" "hobject" "offset" "snapid
+
+ # find pg_epoch from pg_coll database
+ system("awk \"\\$1 == \\\""node"\\\" && \\$2 == \\\""pgid"\\\" && \\$4 == \\\""data_path"\\\" {print \\$3}\" "pg_coll" >>"tmp_image);
+ #system("awk \"\\$1 == \\\""node"\\\" && \\$2 == \\\""pgid"\\\" && \\$4 == \\\""data_path"\\\" {print \\$3}\" "pg_coll);
+ }'
+
+ local sort_image=$offset_dir_temp/sortimage.$$$$
+ >$sort_image
+ sort -t ' ' -k 4.1,4 -k 6.1nr -k 1.1,1 $tmp_image >$sort_image
+ sort -t ' ' -k 4.1,4 -u $sort_image > $image_hobjects_stable
+
+ #rm -rf $offset_dir_temp
+ return 0
+}
+
+function gather_hobject_nosnap()
+{
+ gather_hobject_common $1 $2
+}
+
+function gather_hobject_snap()
+{
+ gather_hobject_common $1 $2 $3
+}
+
+# select the max pg_epoch item of the same $field
+# if no same $field, choose the first
+# format : "node $field pg_epoch"
+function choose_epoch()
+{
+ cat $1|sort -t ' ' -k 3.1,3nr -k 2.1,2n |head -n 1;
+}
+
+# lookup image info , after scatter_node_jobs & gather_node_infos
+function lookup_image()
+{
+ local func="lookup_image"
+ if [ $# -lt 2 ];then
+ echo "$func: parameters error <pool_id> <image_name> [<snap_name>]"
+ fi
+ local pool_id=$1
+ local image_name=$2
+ local snap_name=$3
+ pool_id=$((pool_id))
+ echo -e "$func: pool_id = $pool_id\timage_name = $image_name\tsnap_name = $snap_name"
+ if [ $pool_id -lt 0 ];then
+ echo "$func: pool_id must great than zero"
+ exit
+ fi
+ local hex_pool_id=`printf "%x" $pool_id`
+ input_image $image_name
+ local node=
+ local item=/tmp/item.$$$$
+ local img_name=`dump_backslash $image_name`
+
+ local image_format=0
+ local image_id_hobject=
+ local image_header_hobject=
+ local result=/tmp/tmp_result.$$$$
+ local res1=/tmp/tmp_res1.$$$$
+ local res2=/tmp/tmp_res2.$$$$
+ local data_path=
+
+ # image format v1
+ {
+ cat $image_coll_v1|grep -E "/$img_name\.rbd__head_[0-9A-F]{8}__$hex_pool_id" >$res1
+ if [ -s $res1 ];then
+ echo -n "$func: rbd_header_hobject = "
+ choose_epoch $res1| tee $item
+ #choose_epoch $res1 > $item
+
+ if [ -e $item ];then
+ node=`cat $item|awk '{print $1}'`
+ image_header_hobject=`cat $item|awk '{print $2}'`
+ if [ "$node"x = ""x ];then
+ echo "$func: v1 node is NULL"
+ exit
+ fi
+ if [ "$image_header_hobject"x = ""x ];then
+ echo "$func: v1 image_header_hobject is NULL"
+ exit
+ fi
+ rm -f $item
+ fi
+
+ image_format=1
+ echo -e "image_name:\t$image_name_in"
+ echo -e "image_format:\t$image_format"
+ data_path=`echo $image_header_hobject|awk -F "/current" '{print $1}'`
+
+ >$result
+ cmds="bash $job_path/osd_job do_image_metadata_v1 $data_path `dump_backslash $image_header_hobject` $snap_name"
+ ssh $ssh_option $node $cmds | tee $result
+ fi
+ }
+
+ # image format v2
+ {
+ cat $image_coll_v2|grep -E "/rbd\\\\uid\."$img_name"__head_[0-9A-F]{8}__$hex_pool_id" >$res2
+ if [ -s $res2 ];then
+ echo -n "$func: rbd_id_hobject = "
+ choose_epoch $res2 | tee $item
+ #choose_epoch $res2 > $item
+
+ if [ -e $item ];then
+ node=`cat $item|awk '{print $1}'`
+ image_id_hobject=`cat $item|awk '{print $2}'`
+ if [ "$node"x = ""x ];then
+ echo "$func: v2 node is NULL(to get image_id_hobject)"
+ exit
+ fi
+ if [ "$image_id_hobject"x = ""x ];then
+ echo "$func: v2 image_id_hobject is NULL"
+ exit
+ fi
+ rm -f $item
+ fi
+
+ check_osd_process $node
+ image_format=2
+
+ local tid=/tmp/image_id.$$$$
+ data_path=`echo $image_id_hobject|awk -F "/current" '{print $1}'`
+ >$tid
+ cmds="bash $job_path/osd_job do_image_id $data_path `dump_backslash $image_id_hobject`"
+ ssh $ssh_option $node $cmds > $tid
+
+ local image_id=`cat $tid`
+ rm -f $tid
+
+ #get image_header_hobject
+ pushd $database >/dev/null
+ local pattern="header\."$image_id"__head_[0-9A-F]{8}__$hex_pool_id"
+ local tcoll=/tmp/tmp_image_head_coll.$$$$
+
+ # hostname(by command hostname) in $pg_coll maybe different from hostname in tcoll(input by user)
+ # t_host: hostname read from config file ($tcoll)
+ # t_host_remote: $(hostname) on osd node ($pg_coll)
+ grep -r -E $pattern * >$tcoll
+ popd >/dev/null
+
+ local t_host=(`cat $tcoll|awk -F ":" '{print $1}'`)
+ local t_pgid=(`cat $tcoll|awk -F ":" '{print $2}'|sed -n 's/.*\/\([0-9a-fA-F]\+\.[0-9a-fA-F]\+\)_head\/.*/\1/p'`)
+ local t_hobject=(`cat $tcoll|awk -F ":" '{print $2}'`)
+ local t_data_path=(`cat $tcoll|awk -F ":" '{split($2, arr, "/current/"); print arr[1];}'`)
+ rm -f $tcoll
+ declare -a t_host_remote
+
+ #if there is no failed pg migration, number of t_host is replica num
+ #replica num : 3, 4, 5 ...
+ local t_hostname=/tmp/t_hostname.$$$$
+ for ((i=0; i<${#t_host[*]}; i++))
+ do
+ ssh $ssh_option ${t_host[$i]} "hostname" >$t_hostname
+ if [ $? != 0 ];then
+ echo "$func: ${t_host[$i]} get host_remote failed"
+ exit
+ fi
+ t_host_remote[$i]=`cat $t_hostname`
+ done
+ rm -f $t_hostname
+
+ local t_item=/tmp/tmp_item.$$$$
+ local tmp_item=/tmp/tmp_tmp_item.$$$$
+
+ >$tmp_item
+ for ((i=0; i<${#t_host_remote[*]}; i++ ))
+ do
+ local node=${t_host_remote[$i]}
+ local pgid=${t_pgid[$i]}
+ awk '$1 == "'"$node"'" && $2 == "'"$pgid"'" {print}' $pg_coll >>$tmp_item
+ done
+
+ # t_item: <remote_hostname> <pgid> <epoch> <data_path>
+ sort -u $tmp_item >$t_item
+ rm -f $tmp_item
+
+ local entry=`choose_epoch $t_item` #t_host_remote
+ rm -f $t_item
+
+ node=`echo $entry|awk '{print $1}'`
+ data_path=`echo $entry|awk '{print $4}'`
+ if [ "$node"x = ""x ];then
+ echo "$func: v2 node is NULL (to get image_header_hobject)"
+ exit
+ fi
+
+ for ((i=0; i<${#t_host_remote[*]}; i++))
+ do
+ if [ "${t_host_remote[$i]}"x = "$node"x ] && [ "${t_data_path[$i]}"x = "$data_path"x ];then
+ image_header_hobject=${t_hobject[$i]}
+ break
+ fi
+ done
+
+ if [ "$image_id_hobject"x = ""x ];then
+ echo "$func: v2 image_header_hobject is NULL"
+ exit
+ fi
+
+ check_osd_process $node
+
+ echo "$func: rbd_header_hobject = $node $image_header_hobject"
+ echo -e "image_name:\t$image_name_in"
+ echo -e "image_format:\t$image_format"
+
+ #data_path=`echo $image_header_hobject|awk -F "/current" '{print $1}'`
+ >$result
+ cmds="bash $job_path/osd_job do_image_metadata_v2 $data_path $image_id `dump_backslash $image_header_hobject` $snap_name"
+ ssh $ssh_option $node $cmds | tee $result
+ fi
+ }
+
+ if [ ! -s $result ];then
+ echo "$func: $image_name_in not exists"
+ exit
+ fi
+
+ # to assign value to global variable
+ db_image_prefix=`cat $result|awk '/^(object_prefix|block_name):/{print $2}'`
+ if [ "$db_image_prefix"x = ""x ];then
+ echo "$func: image_prefix is NULL"
+ exit
+ fi
+
+ db_image_size=`cat $result|awk '/^image_size:/{print $2}'`
+ db_order=`cat $result|awk '/^order:/{print $2}'`
+ if [ "$snap_name"x != ""x ];then
+ db_snap_id=`cat $result|awk '/^snapshot:/{print $2}'`
+ if [ "$db_snap_id"x = ""x ];then
+ echo "$func: $image_name_in@$snap_name NOT EXISTS"
+ exit
+ fi
+ db_snap_image_size=`cat $result|awk '/^snapshot:/{print $4}'`
+ else
+ #save snaplist
+ local image_snaplist=$images/pool_$pool_id/$image_name_in/@snaplist
+ local image_dir=$images/pool_$pool_id/$image_name_in
+ if [ ! -e $image_dir ];then
+ mkdir -p $image_dir
+ fi
+ cat $result|awk '/^snapshot:/{print $2" "$3" "$4}' >$image_snaplist
+ fi
+ found=1
+ rm -f $result
+}
+
+function list_images()
+{
+ echo "=============== format =============="
+ echo "format: <pool_id>/<image_name>"
+ echo "================ v1: ================"
+ #sed -n 's/\(.*\)\/\(.*\)\.rbd__\(.*\)/\2/p' $image_coll_v1|sort -u|sed -e 's/\\u/_/g'
+ sed -n 's/.*\/\(.*\)\.rbd__head_[0-9A-F]\{8\}__\([0-9a-f]\+\).*/\2 \1/p' $image_coll_v1|sort -u|awk '{print strtonum("0x"$1)"/"$2;}'|sed -e 's/\\u/_/g'
+ echo "================ v2: ================"
+ #sed -n 's/\(.*\)\/rbd\\uid.\(.*\)__\(head.*\)/\2/p' $image_coll_v2|sort -u|sed 's/\\u/_/g'
+ sed -n 's/.*\/rbd\\uid.\(.*\)__head_[0-9A-F]\{8\}__\([0-9a-f]\+\).*/\2 \1/p' $image_coll_v2|sort -u|awk '{print strtonum("0x"$1)"/"$2}'|sed 's/\\u/_/g'
+}
+
+# lookup image metadata
+# and
+# collect hobjects of image with the latest pg epoch
+function discover_image_nosnap()
+{
+ local func="discover_image_nosnap"
+ echo "$func ..."
+ local pool_id=$1
+ local image_name=$2
+ pool_id=$(($pool_id))
+ lookup_image $pool_id $image_name # assign $image_prefix
+ gather_hobject_nosnap $pool_id $db_image_prefix
+ if [ $? -ne 0 ];then
+ exit
+ fi
+ local image_hobjects_stable_nosnap=$images/pool_$pool_id/$db_image_prefix/$db_image_prefix"_head"
+ local image_hobjects_dir=$images/pool_$pool_id/$image_name_in
+ if [ ! -e $image_hobjects_dir ];then
+ mkdir -p $image_hobjects_dir
+ fi
+ # mv image_prefix to image_name
+ mv $image_hobjects_stable_nosnap $image_hobjects_dir/$image_name_in
+ rm -rf $images/pool_$pool_id/$db_image_prefix
+}
+
+# get the offset snapid object
+# if there is no object, choose the smallest snapid which is greater than current snapid
+function get_object_clone()
+{
+ local func="get_object_clone"
+ if [ $# -lt 4 ];then
+ exit
+ fi
+
+ local object_offset_string=$1
+ local snapid=$2
+ local snaplist_path=$3
+ local snapset_output_dir=$4
+
+ # snapid in desc
+ local snap_coll_arr=(`
+ cat $snaplist_path|awk '{ if ($1 >= '"$snapid"') print "'"$snapset_output_dir"'/@"$1}'`)
+
+ local hex_snapid=`printf "%x" $snapid`
+ pushd $snapset_output_dir >/dev/null
+ # get object with the smallest snapid greater than current snapid
+ awk '$4 == "'"$object_offset_string"'" && $5 >= '$snapid' {print}' `echo ${snap_coll_arr[@]}` |tail -n 1
+ popd >/dev/null
+}
+
+# gather hobject for each snapid
+function gen_snapset_hobject()
+{
+ local func="gen_image_snapset"
+ echo "$func ..."
+ if [ $# -lt 4 ];then
+ echo "$func: parameters: <pool_id> <image_prefix> <snaplist_path> <snapset_output_dir>"
+ exit
+ fi
+ local pool_id=$1
+ local image_prefix=$2
+ local snaplist_path=$3
+ local snapset_output_dir=$4
+ pool_id=$(($pool_id))
+ OIFS=$IFS
+ IFS=$'\n'
+ local snaparr=(`cat $snaplist_path`)
+ # gather hobject for each snapshot
+ trap 'echo $func failed; exit;' INT HUP
+ for line in ${snaparr[@]}
+ do
+ OOIFS=$IFS
+ IFS=$' '
+ local field=(`echo $line`)
+ local snapid=${field[0]}
+ local image_hobjects_stable_snap=$images/pool_$pool_id/$image_prefix/$image_prefix"_"$snapid
+ local image_snap=$snapset_output_dir/@$snapid
+ gather_hobject_snap $pool_id $image_prefix $snapid
+ local res=$?
+ if [ $res -ne 0 ];then
+ touch $image_snap
+ else
+ mv $image_hobjects_stable_snap $image_snap
+ fi
+ IFS=$OOIFS
+ done
+ IFS=$OIFS
+}
+
+# lookup image metadata and get snapid hobjects
+function discover_image_snap()
+{
+ local func="discover_image_snap"
+ echo "$func ..."
+ if [ $# -lt 3 ];then
+ echo "$func: paramters: <pool_id> <image_name> [<snap_name>]"
+ exit
+ fi
+ local pool_id=$1
+ local image_name=$2
+ local snap_name=$3
+ pool_id=$(($pool_id))
+ #mkdir -p $images/$image_prefix
+ lookup_image $pool_id $image_name $snap_name # input image_name and snap_name to lookup metadata and snap_id
+ if [ "$db_snap_id"x = ""x ];then
+ echo "$func: lookup image failed to gen snapid"
+ exit
+ fi
+ local image_hobjects_dir_prefix=$images/pool_$pool_id/$db_image_prefix
+ local image_nosnap=$images/pool_$pool_id/$image_name_in
+ #check if image nosnap recovered
+ if [ ! -s $image_nosnap ];then
+ echo "$func: please recover image nosnap before recover with snap"
+ rm -rf $image_hobjects_dir_prefix
+ exit
+ fi
+ local image_hobject_dir=$images/pool_$pool_id/$image_name_in
+ local image_snap_hobject=$image_hobject_dir/$image_name_in@$db_snap_id
+ local image_snap_hobject_head=$image_hobject_dir/$image_name_in@$db_snap_id@head
+ local image_snaplist=$image_hobject_dir/@snaplist
+ local image_snapset_dir=$image_hobject_dir/@snapset_dir
+ local image_head=$image_hobject_dir/$image_name_in
+ if [ ! -e $image_hobject_dir ];then
+ mkdir -p $image_hobject_dir
+ fi
+ # only gen snapset one time
+ if [ ! -e $image_snapset_dir ];then
+ mkdir -p $image_snapset_dir
+ gen_snapset_hobject $pool_id $db_image_prefix $image_snaplist $image_snapset_dir
+
+ fi
+
+ echo "$func: will get object clone ..."
+ >$image_snap_hobject
+ >$image_snap_hobject_head
+
+ trap 'echo $func failed; exit;' INT HUP
+ # get each offset 's snapid hobject
+ while read line
+ do
+ #echo $line
+ OOIFS=$IFS
+ IFS=$' '
+ local field=(`echo $line`)
+ local offset_string=${field[3]}
+ IFS=$OOIFS
+ local entry=`get_object_clone $offset_string $db_snap_id $image_snaplist $image_snapset_dir`
+ if [ "$entry"x != ""x ];then
+ echo $entry >> $image_snap_hobject
+ echo `dump_backslash $line` >> $image_snap_hobject_head
+ fi
+ done < $image_head
+ rm -rf $image_hobjects_dir_prefix
+}
+
+# after discover_image_nosnap
+# collect objects from osds one by one in sequence
+function copy_image_nosnap_single_thread()
+{
+ local func="copy_image_nosnap_single_thread"
+ echo "$func ..."
+ if [ $# -lt 3 ];then
+ echo "$func: parameters: <pool_id> <image_hobjects> <backup_dir>"
+ exit
+ fi
+ local pool_id=$1
+ local image_hobjects=$2
+ local backup_dir=$3
+ pool_id=$(($pool_id))
+
+ # make sure lookup_image first
+ if [ $found = 0 ];then
+ echo "$func: image not found, maybe forget to discover_image"
+ exit
+ fi
+ if [ ! -e $backup_dir ];then
+ mkdir -p $backup_dir
+ fi
+
+ local image_dir=$backup_dir/pool_$pool_id/$image_name_in
+ local image_file=$image_dir/$image_name_in
+ local CURRENT=$image_dir/@CURRENT
+ local LOCK=$image_dir/@LOCK
+ if [ ! -e $image_dir ];then
+ mkdir -p $image_dir
+ fi
+ if [ -e $LOCK ];then
+ echo "$func: $LOCK is locked by other process"
+ exit
+ else
+ touch $LOCK
+ fi
+
+ >$image_file
+ truncate -s $db_image_size $image_file
+ echo "head">$CURRENT
+
+ local count=$(($db_image_size >> $db_order))
+ local start=`cat $image_hobjects|head -n 1|awk '{print $4}'`
+ local end=`cat $image_hobjects|tail -n 1|awk '{print $4}'`
+ local entry_count=`cat $image_hobjects|wc -l`
+
+ local char_bits=$((`echo $start|wc -c` -1 ))
+ local format="%0"$char_bits"x"
+
+ local expect_start=`printf $format 0`
+ local expect_end=`printf $format $(($count -1 ))`
+
+ echo -e "object_count\t$entry_count"
+ echo -e "expect\t\t[$expect_start ~ $expect_end] count:$count"
+ echo -e "range\t\t[$start ~ $end] count:$entry_count"
+
+ local icount=0
+ local istart=
+ local iend=
+ local percent=
+
+ trap 'echo $func failed; exit;' INT HUP
+ local unit=$((1<<$db_order))
+ while read line
+ do
+ {
+ icount=$(($icount+1))
+ node=`echo $line|awk '{print $1}'`
+ hobject=`echo $line|awk '{print $3}'`
+ offset=`echo $line|awk '{print $4}'`
+ off=$((16#$offset))
+ if [ $icount = 1 ];then
+ istart=$offset
+ fi
+ hobject=`dump_backslash $hobject`
+ iend=$offset
+ sshcmd="cat $hobject"
+ ssh $ssh_option $node $sshcmd < /dev/null | dd of=$image_file bs=$unit seek=$off conv=notrunc 2>/dev/null
+ percent=`echo "scale=3; 100*$icount/$entry_count"|bc`
+ tput sc #record current cursor
+ echo -n -e "complete\t[$istart ~ $iend] $icount/$entry_count ==> "$percent"%"
+ if [ $icount != $entry_count ];then
+ tput rc # backport most recent cursor
+ fi
+ }
+ done < $image_hobjects
+
+ echo
+ echo -n "size: "
+ ls -lh $image_file|awk '{print $5"\t"$9}'
+ echo -n "du: "
+ du -h $image_file
+ #unlock
+ rm -f $LOCK
+}
+
+
+# ssh copy snap_object & head_object from osd to admin node
+# copy all snapshot objects
+# and
+# all head objects which have the same offset as snapshot objects
+function collect_image_snap_objects()
+{
+ local func="collect_image_snap_objects"
+ #$1=backup_dir, $2=snap_name, $3=snap_hobjects, $4=head_hobjects
+ if [ $# -lt 6 ];then
+ echo "$func: parameters: <pool_id> <image_name> <snap_id> <snap_hobjects> <head_hobjects> <backup_dir>"
+ exit
+ fi
+
+ local pool_id=$1
+ local image_name=$2
+ local snap_id=$3
+ local snap_hobjects=$4 #snap hobjects info
+ local head_hobjects=$5 #head hobjects info
+ local backup_dir=$6
+ pool_id=$(($pool_id))
+
+ local head_dir=$backup_dir/pool_$pool_id/$image_name/@head
+ local snap_dir=$backup_dir/pool_$pool_id/$image_name/@$snap_id
+ local CURRENT=$backup_dir/pool_$pool_id/$image_name/@CURRENT
+
+ if [ ! -e $head_dir ];then
+ mkdir -p $head_dir
+ fi
+ if [ ! -e $snap_dir ];then
+ mkdir -p $snap_dir
+ fi
+
+ local snap_node= #osd node
+ local snap_hobject= #hobject path with snapid on osd
+ local snap_offset=
+ local snap_filename=
+
+ local head_node=
+ local head_hobject=
+ local head_offset=
+ local head_filename=
+
+ # ignore if there is no object in snapshot(empty )
+ if [ ! -s $snap_hobjects ];then
+ echo "$func: $snap_hobjects is empty"
+ return 0
+ fi
+ local start=`head -n 1 $snap_hobjects|awk '{print $4}'`
+ local end=`tail -n 1 $snap_hobjects|awk '{print $4}'`
+ local entry_count=`cat $snap_hobjects|wc -l`
+ if [ $((16#$first_offset)) -gt $((16#$last_offset)) ];then
+ echo "$func: $snap_hobjects not sorted"
+ return 1
+ fi
+
+ # just assert if ignored empty snapshot
+ if [ "$start"x = ""x ] || [ "$end"x = ""x ];then
+ return 1
+ fi
+
+ # speed up copy snapshot
+ # lookup the coresponding head hobject of snap hobject
+ # use command: grep <offset> <head hobjects>
+ #
+ # eg.
+ # head hobjects: (32 objects, snapid = uint64(-2) = 18446744073709551614)
+ # ceph1 29.4d /var/lib/ceph/osd/ceph-0/current/29.4d_head/rb.0.1c414.6b8b4567.000000000000__head_EC2C1C4D__1d 000000000000 18446744073709551614 869
+ # ceph1 29.8c /var/lib/ceph/osd/ceph-0/current/29.8c_head/rb.0.1c414.6b8b4567.000000000001__head_0F439A8C__1d 000000000001 18446744073709551614 867
+ # ceph1 29.6a /var/lib/ceph/osd/ceph-0/current/29.6a_head/rb.0.1c414.6b8b4567.000000000002__head_FC55706A__1d 000000000002 18446744073709551614 869
+ # ceph1 29.8b /var/lib/ceph/osd/ceph-0/current/29.8b_head/rb.0.1c414.6b8b4567.000000000003__head_20A6328B__1d 000000000003 18446744073709551614 869
+ # ceph2 29.75 /var/lib/ceph/osd/ceph-1/current/29.75_head/rb.0.1c414.6b8b4567.000000000004__head_AC5ADB75__1d 000000000004 18446744073709551614 867
+ # ceph2 29.23 /var/lib/ceph/osd/ceph-1/current/29.23_head/rb.0.1c414.6b8b4567.000000000005__head_1FDEA823__1d 000000000005 18446744073709551614 867
+ # ......
+ # ceph1 29.34 /var/lib/ceph/osd/ceph-0/current/29.34_head/rb.0.1c414.6b8b4567.00000000001f__head_52373734__1d 00000000001f 18446744073709551614 869
+ #
+ # snap hobjects: (3 objects, snapid >= 29)
+ # ceph1 29.8c /var/lib/ceph/osd/ceph-0/current/29.8c_head/rb.0.1c414.6b8b4567.000000000001__1f_0F439A8C__1d 000000000001 31 867
+ # ceph1 29.6a /var/lib/ceph/osd/ceph-0/current/29.6a_head/rb.0.1c414.6b8b4567.000000000002__1e_FC55706A__1d 000000000002 30 869
+ # ceph1 29.8b /var/lib/ceph/osd/ceph-0/current/29.8b_head/rb.0.1c414.6b8b4567.000000000003__1d_20A6328B__1d 000000000003 29 869
+ #
+ # so find out offset in head hobjects line number:
+ # snap hobjects: 000000000001 ---> head hobjects: 2 (n1)
+ # snap hobjects: 000000000003 ---> head hobjects: 4 (n2)
+ #
+ # finally , grep range from the whole file [1 ~ N] shranked to part of file [n1 ~ n2]
+ # the worst case : [n1 ~ n2] = [1 ~ N], means no shranking
+
+ # get the line number of the start offset in head hobjects
+ local n1=`grep -n $start $head_hobjects|head -n 1|cut -d ":" -f 1`
+ # get the line number of the end offset in head hobjects
+ local n2=`grep -n $end $head_hobjects|head -n 1|cut -d ":" -f 1`
+
+ local icount=0
+ local istart=
+ local iend=
+ local percent=
+
+ OIFS=$IFS
+ IFS=$'\n'
+
+ #assume file:snap_hobjects is not very large, and can be loaded into memory
+ local snap_arr=(`cat $snap_hobjects`)
+ local snap_tmp=/tmp/snaptmp.$$$$
+
+ # snap_tmp:
+ # consists of snap hobject or head hobject
+ # select lineno range: [n1 ~ n2]
+ head -n $n2 $head_hobjects|tail -n $(($n2-$n1+1)) >$snap_tmp
+
+ echo "copy image snap/head objects from osd ..."
+ echo -e "object_count\t$entry_count"
+ echo -e "range\t\t[$start ~ $end] count:$entry_count"
+
+ trap 'echo $func failed; exit;' INT HUP
+ for line in ${snap_arr[*]}
+ do
+ icount=$(($icount+1))
+
+ OOIFS=$IFS
+ IFS=$' '
+
+ local arr=(`echo $line`)
+ snap_node=${arr[0]}
+ snap_hobject=${arr[2]}
+ snap_offset=${arr[3]}
+ snap_filename=$snap_dir/$snap_offset
+
+ if [ $icount = 1 ];then
+ istart=$snap_offset
+ fi
+ iend=$snap_offset
+
+ #lookup corresponding head hobject of snap hobject
+ local res=`grep $snap_offset $snap_tmp|head -n 1`
+ if [ "$res"x = ""x ];then
+ echo "$func: image object[ $snap_offset ] missing"
+ exit
+ fi
+
+ local arr2=(`echo $res`)
+ head_node=${arr2[0]}
+ head_hobject=${arr2[2]}
+ head_offset=${arr2[3]}
+ head_filename=$head_dir/$head_offset
+
+ # just copy object(snap/head) if it does not exist
+ if [ ! -e $snap_filename ];then
+ ssh $ssh_option $snap_node "cat $snap_hobject" > $snap_filename
+ fi
+ if [ ! -e $head_filename ];then
+ ssh $ssh_option $head_node "cat $head_hobject" > $head_filename
+ fi
+ IFS=$OOIFS
+
+ percent=`echo "scale=3; 100*$icount/$entry_count"|bc`
+ tput sc #record current cursor
+ echo -n -e "complete\t[$istart ~ $iend] $icount/$entry_count ==> "$percent"%"
+ if [ $icount != $entry_count ];then
+ tput rc # backport most recent cursor
+ fi
+ done
+ echo
+ IFS=$OIFS
+ rm -f $snap_tmp
+ return 0
+}
+
+# copy all snap objects and corresponding head objects from osds
+# in single process
+function copy_image_snap_single_thread()
+{
+ local func="copy_image_snap_single_thread"
+ if [ $# -lt 6 ];then
+ echo "$func: parameters: <pool_id> <image_name> <snap_id> <snap_hobjects> <head_hobjects> <backup_dir>"
+ exit
+ fi
+ local pool_id=$1
+ local image_name=$2
+ local snap_id=$3
+ local snap_hobjects=$4
+ local head_hobjects=$5
+ local backup_dir=$6
+ pool_id=$(($pool_id))
+
+ local CURRENT=$backup_dir/pool_$pool_id/$image_name/@CURRENT
+ local LOCK=$backup_dir/pool_$pool_id/$image_name/@LOCK
+ #lock
+ if [ -e $LOCK ];then
+ echo "$func: $LOCK is locked by other process"
+ exit
+ else
+ touch $LOCK
+ fi
+ collect_image_snap_objects $pool_id $image_name $snap_id $snap_hobjects $head_hobjects $backup_dir
+ #unlock
+ rm -f $LOCK
+}
+
+# after all snap objects and necessary head objects are copied,
+# just pick appropriate head objects and snap objects and write them to image
+# in order to rollback image to snapshot
+#
+# init: image is created by copy_image_nosnap_single_thread firstly
+#
+# all output include 3 parts:
+# <image> <head objects> <snap objects>
+#
+# head objects1 --- snap1 objects
+# head objects2 --- snap2 objects
+# image head objects3 --- snap3 objects
+# ......
+# head objectsN --- snapN objects
+#
+# how to rollback:
+# firstly rollback to head, secondly write <snapX objects>
+# head = <image> + <head objects>
+# snap1 = <image> + <head objects> + <snap1 objects>
+# snap2 = <image> + <head objects> + <snap2 objects>
+# snap3 = <image> + <head objects> + <snap3 objects>
+# ......
+# snapN = <image> + <head objects> + <snapN objects>
+#
+# improve rollback:
+# there is intersection of head objects and snapX objects, if snapX objects are not empty
+# and need to deduplicate the intersection.
+# deduplicate steps:
+# - get difference set of head objects and snapX objects
+# - write the difference set objects to image
+# - write the snapX objects to image
+function rollback_image_snap()
+{
+ local func="rollback_image_snap"
+
+ echo "$func ..."
+
+ trap 'echo $func failed; exit;' INT HUP
+ if [ $# -lt 6 ];then
+ echo "$func: parameters <pool_id> <image_name> <snap_id> <snap_object_dir> <backup_dir> <image_unit>"
+ exit
+ fi
+ local pool_id=$1
+ local image_name=$2
+ local snap_id=$3
+ local snap_object_dir=$4
+ local backup_dir=$5
+ local image_unit=$6
+
+ local need_diff_set=0
+
+ local image_path=$backup_dir/pool_$pool_id/$image_name/$image_name
+ local head_object_dir=$backup_dir/pool_$pool_id/$image_name/@head
+ local CURRENT=$backup_dir/pool_$pool_id/$image_name/@CURRENT
+ local LOCK=$backup_dir/pool_$pool_id/$image_name/@LOCK
+ if [ -e $LOCK ];then
+ echo "$func: $LOCK is locked by other process"
+ exit
+ else
+ touch $LOCK
+ fi
+ if [ $snap_id -ne -2 ];then
+ echo $snap_id > $CURRENT
+ else
+ echo "head" > $CURRENT
+ fi
+
+ if [ ! -e $snap_object_dir ];then
+ return 0
+ fi
+
+ if [ "$snap_object_dir"x != "$head_object_dir"x ];then
+ echo "$func: need to compute diff_set of head"
+ need_diff_set=1
+ else
+ echo "$func: NO diff_set"
+ need_diff_set=0
+ fi
+
+ local entry_count=0
+ local start=
+ local end=
+ local offset=
+ local icount=0
+ local istart=
+ local iend=
+ local percent=
+
+ local snap_objects=
+ local head_objects=
+ local diff_set=
+
+ snap_objects=(`ls $snap_object_dir`)
+
+ # if need to compute difference set of head_objects and snap_objects
+ if [ $need_diff_set -ne 0 ];then
+ head_objects=(`ls $head_object_dir`)
+
+ #get the difference set: ( head_objects - snap_objects )
+ diff_set=(`
+ sort -m <(echo ${head_objects[@]}|xargs -n 1 echo) <(echo ${snap_objects[@]}|xargs -n 1 echo) \
+ <(echo ${snap_objects[@]}|xargs -n 1 echo) |uniq -u`)
+
+ # copy diff_set of head object to image
+ pushd $head_object_dir >/dev/null
+
+ echo "$func: copy diff_set head objects ..."
+ entry_count=${#diff_set[@]}
+ start=${diff_set[0]}
+ end=
+ if [ $entry_count -gt 0 ];then
+ end=${diff_set[$(($entry_count - 1))]}
+ fi
+ offset=
+ icount=0
+ istart=
+ iend=
+ percent=
+
+ echo -e "object_count\t$entry_count"
+ echo -e "range\t\t[$start ~ $end] count:$entry_count"
+
+ for object in ${diff_set[@]}
+ do
+ icount=$(($icount+1))
+ if [ $icount = 1 ];then
+ istart=$object
+ fi
+ iend=$object
+
+ local offset=$((16#$object))
+ dd if=$object of=$image_path bs=$image_unit seek=$offset conv=notrunc 2>/dev/null
+
+ percent=`echo "scale=3; 100*$icount/$entry_count"|bc`
+ tput sc #record current cursor
+ echo -n -e "complete\t[$istart ~ $iend] $icount/$entry_count ==> "$percent"%"
+ if [ $icount != $entry_count ];then
+ tput rc # backport most recent cursor
+ fi
+ done
+ if [ $entry_count -gt 0 ];then
+ echo
+ fi
+ popd >/dev/null
+
+ if [ $snap_id -ne -2 ];then
+ echo -e "$image_name already rollback diff_set: (head - snap)"
+ fi
+ fi
+
+ # copy snap object to image
+ pushd $snap_object_dir >/dev/null
+
+ if [ $need_diff_set -ne 0 ];then
+ echo "$func: copy snap objects ..."
+ else
+ echo "$func: copy head objects ..."
+ fi
+ entry_count=${#snap_objects[@]}
+ start=${snap_objects[0]}
+ end=
+ if [ $entry_count -gt 0 ];then
+ end=${snap_objects[$(($entry_count - 1))]}
+ fi
+ offset=
+ icount=0
+ istart=
+ iend=
+ percent=
+
+ echo -e "object_count\t$entry_count"
+ echo -e "range\t\t[$start ~ $end] count:$entry_count"
+
+ for object in ${snap_objects[@]}
+ do
+ icount=$(($icount+1))
+ if [ $icount = 1 ];then
+ istart=$object
+ fi
+ iend=$object
+
+ local offset=$((16#$object))
+ dd if=$object of=$image_path bs=$image_unit seek=$offset conv=notrunc 2>/dev/null
+
+ percent=`echo "scale=3; 100*$icount/$entry_count"|bc`
+ tput sc #record current cursor
+ echo -n -e "complete\t[$istart ~ $iend] $icount/$entry_count ==> "$percent"%"
+ if [ $icount != $entry_count ];then
+ tput rc # backport most recent cursor
+ fi
+ done
+ if [ $entry_count -gt 0 ];then
+ echo
+ fi
+ popd >/dev/null
+
+ rm -f $LOCK
+ if [ $snap_id -ne -2 ];then
+ echo "$image_name rollback to snapid: $snap_id"
+ else
+ echo "$image_name rollback to head"
+ fi
+}
+
+function recover_image()
+{
+ local func="recover_image"
+ echo "$func ..."
+
+ if [ $# -lt 3 ];then
+ echo "$func: paramters: <pool_id> <image_name> <snap_name> [<backup_dir>]"
+ exit
+ fi
+
+ local pool_id=$1
+ local img_name=$2
+ local snap_name=$3
+ local backup_dir=$4
+ pool_id=$(($pool_id))
+ if [ "$snap_name"x = "@"x ];then
+ snap_name=
+ fi
+ if [ "$backup_dir"x = ""x ];then
+ backup_dir=$default_backup_dir
+ fi
+
+ #recover image with nosnap
+ if [ "$snap_name"x = ""x ];then
+ discover_image_nosnap $pool_id $img_name #input image_name
+ local image_hobjects=$images/pool_$pool_id/$image_name_in/$image_name_in
+ copy_image_nosnap_single_thread $pool_id $image_hobjects $backup_dir
+
+ #recover image with snap
+ else
+
+ # check if recovered head already
+ local img_hobjects_path=$images/pool_$pool_id/$img_name/$img_name
+ local img_file_path=$backup_dir/pool_$pool_id/$img_name/$img_name
+ if [ ! -e $img_hobjects_path ] || [ ! -e $img_file_path ];then
+ echo "$func: $img_name@$snap_name : can not rollback to snapshot, please recover image head first"
+ exit
+ fi
+
+ # rollback to head
+ if [ "$snap_name"x = "@@"x ];then
+ local head_dir=$backup_dir/pool_$pool_id/$img_name/@head
+ if [ -e $head_dir ];then
+ local unit=`pushd $head_dir >/dev/null; ls|head -n 1|xargs -n 1 stat|awk '/Size:/{print $2}'`
+ # rollback to head
+ rollback_image_snap $pool_id $img_name -2 $backup_dir/$img_name/@head $backup_dir $unit
+ echo "$image_name_in head : $backup_dir/$img_name/$img_name"
+ else
+ echo "$func: no need to rollback to head"
+ fi
+ return 0
+ fi
+
+ # rollback to snap
+ discover_image_snap $pool_id $img_name $snap_name # get image meta & get snapid object
+ local snap_hobjects=$images/pool_$pool_id/$image_name_in/$image_name_in@$db_snap_id
+ local head_hobjects=$images/pool_$pool_id/$image_name_in/$image_name_in@$db_snap_id@head
+ local snap_object_dir=$backup_dir/pool_$pool_id/$image_name_in/@$db_snap_id
+ local image_path=$backup_dir/pool_$pool_id/$image_name_in/$image_name_in
+ local image_unit=$((1<<$db_order))
+ copy_image_snap_single_thread $pool_id $image_name_in $db_snap_id $snap_hobjects $head_hobjects $backup_dir
+ rollback_image_snap $pool_id $image_name_in $db_snap_id $snap_object_dir $backup_dir $image_unit
+ echo "$image_name_in@$snap_name : $image_path"
+ fi
+}
Code Review / stor4nfv.git / blobdiff