+++ /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