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Diffstat (limited to 'geo-replication/src/gverify.sh')
| -rwxr-xr-x | geo-replication/src/gverify.sh | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/geo-replication/src/gverify.sh b/geo-replication/src/gverify.sh new file mode 100755 index 000000000..bd1b25f24 --- /dev/null +++ b/geo-replication/src/gverify.sh @@ -0,0 +1,160 @@ +#!/bin/bash + +# Script to verify the Master and Slave Gluster compatibility. +# To use ./gverify <master volume> <slave host> <slave volume> +# Returns 0 if master and slave compatible. + +# Considering buffer_size 100MB +BUFFER_SIZE=104857600; +slave_log_file=`gluster --print-logdir`/geo-replication-slaves/slave.log + +function SSHM() +{ + ssh -q \ + -oPasswordAuthentication=no \ + -oStrictHostKeyChecking=no \ + -oControlMaster=yes \ + "$@"; +} + +function cmd_master() +{ + VOL=$1; + local cmd_line; + cmd_line=$(cat <<EOF +function do_verify() { +v=\$1; +d=\$(mktemp -d 2>/dev/null); +glusterfs -s localhost --xlator-option="*dht.lookup-unhashed=off" --volfile-id \$v -l $slave_log_file \$d; +i=\$(stat -c "%i" \$d); +if [[ "\$i" -ne "1" ]]; then +echo 0:0; +exit 1; +fi; +cd \$d; +available_size=\$(df \$d | tail -1 | awk "{print \\\$2}"); +umount -l \$d; +rmdir \$d; +ver=\$(gluster --version | head -1 | cut -f2 -d " "); +echo \$available_size:\$ver; +}; +cd /tmp; +[ x$VOL != x ] && do_verify $VOL; +EOF +); + +echo $cmd_line; +} + +function cmd_slave() +{ + VOL=$1; + local cmd_line; + cmd_line=$(cat <<EOF +function do_verify() { +v=\$1; +d=\$(mktemp -d 2>/dev/null); +glusterfs -s localhost --xlator-option="*dht.lookup-unhashed=off" --volfile-id \$v -l $slave_log_file \$d; +i=\$(stat -c "%i" \$d); +if [[ "\$i" -ne "1" ]]; then +echo 0:0; +exit 1; +fi; +cd \$d; +available_size=\$(df \$d | tail -1 | awk "{print \\\$4}"); +no_of_files=\$(find \$d -maxdepth 0 -empty); +umount -l \$d; +rmdir \$d; +ver=\$(gluster --version | head -1 | cut -f2 -d " "); +echo \$available_size:\$ver:\$no_of_files:; +}; +cd /tmp; +[ x$VOL != x ] && do_verify $VOL; +EOF +); + +echo $cmd_line; +} + +function master_stats() +{ + MASTERVOL=$1; + local cmd_line; + cmd_line=$(cmd_master $MASTERVOL); + bash -c "$cmd_line"; +} + + +function slave_stats() +{ + SLAVEHOST=$1; + SLAVEVOL=$2; + local cmd_line; + cmd_line=$(cmd_slave $SLAVEVOL); + SSHM $SLAVEHOST bash -c "'$cmd_line'"; +} + + +function main() +{ + log_file=$4 + > $log_file + + # Use FORCE_BLOCKER flag in the error message to differentiate + # between the errors which the force command should bypass + + ping -w 5 $2; + if [ $? -ne 0 ]; then + echo "FORCE_BLOCKER|$2 not reachable." > $log_file + exit 1; + fi; + + ssh -oNumberOfPasswordPrompts=0 $2 "echo Testing_Passwordless_SSH"; + if [ $? -ne 0 ]; then + echo "FORCE_BLOCKER|Passwordless ssh login has not been setup with $2." > $log_file + exit 1; + fi; + + ERRORS=0; + master_data=$(master_stats $1); + slave_data=$(slave_stats $2 $3); + master_size=$(echo $master_data | cut -f1 -d':'); + slave_size=$(echo $slave_data | cut -f1 -d':'); + master_version=$(echo $master_data | cut -f2 -d':'); + slave_version=$(echo $slave_data | cut -f2 -d':'); + slave_no_of_files=$(echo $slave_data | cut -f3 -d':'); + + if [[ "x$master_size" = "x" || "x$master_version" = "x" || "$master_size" -eq "0" ]]; then + echo "FORCE_BLOCKER|Unable to fetch master volume details. Please check the master cluster and master volume." > $log_file; + exit 1; + fi; + + if [[ "x$slave_size" = "x" || "x$slave_version" = "x" || "$slave_size" -eq "0" ]]; then + echo "FORCE_BLOCKER|Unable to fetch slave volume details. Please check the slave cluster and slave volume." > $log_file; + exit 1; + fi; + + # The above checks are mandatory and force command should be blocked + # if they fail. The checks below can be bypassed if force option is + # provided hence no FORCE_BLOCKER flag. + + if [ ! $slave_size -ge $(($master_size - $BUFFER_SIZE )) ]; then + echo "Total size of master is greater than available size of slave." >> $log_file; + ERRORS=$(($ERRORS + 1)); + fi; + + if [ -z $slave_no_of_files ]; then + echo "$2::$3 is not empty. Please delete existing files in $2::$3 and retry, or use force to continue without deleting the existing files." >> $log_file; + ERRORS=$(($ERRORS + 1)); + fi; + + if [[ $master_version > $slave_version ]]; then + echo "Gluster version mismatch between master and slave." >> $log_file; + ERRORS=$(($ERRORS + 1)); + fi; + + exit $ERRORS; +} + + +main "$@"; |