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#!/bin/bash


function get_layout()
{
        getfattr -n trusted.glusterfs.dht -e hex $1 2>&1 | grep dht | cut -d = -f2
}

## populates $BRICK1 and $BRICK2 with hashed/cached subvolume. These will be
## used by get_cached_brick and get_hashed_brick

function file_has_linkfile()
{
        k=0
        l=0
        while [ $k -lt $BRICK_COUNT ]
        do
                stat=$(stat $B0/${V0}$k/$1 2>/dev/null)
                if [ $? -eq 0 ]
                then
                        let l++
                        let "BRICK${l}=$k"

                fi
                let k++
        done
        return $l
}

function get_cached_brick()
{
        i=1
        brick=$BRICK1
        while [ $i -lt 3 ]
        do
                test=$(getfattr -n trusted.glusterfs.dht.linkto -e text $B0/${V0}$brick/$1 2>&1)
                if [ $? -eq 1 ]
                then
                        cached=$brick
                        i=$(( $i+3 ))
                fi
                brick=$BRICK1
                let i++
        done

        return $cached
}

function get_hashed_brick()
{
        j=1
        brick=$BRICK1
        while [ $j -lt 3 ]
        do
                test=$(getfattr -n trusted.glusterfs.dht.linkto -e text $B0/${V0}$brick/$1 2>&1)
                if [ $? -eq 0 ]
                then
                        hashed=$brick
                        j=$(( $j+3 ))
                fi
                brick=$BRICK2
                let j++
        done

        return $hashed
}


function rebalance_completed()
{
       val=1
       test=$(gluster volume rebalance $V0 status | grep localhost | grep -v "in progress" 2>&1)
       if [ $? -eq 0 ]
       then
                val=0
       fi

       echo $val
       return $val
}

function remove_brick_completed()
{
       val=1
       test=$(gluster volume remove-brick $V0 $H0:$B0/${V0}2 status | grep localhost | grep -v "in progress" 2>&1)
       if [ $? -eq 0 ]
       then
                val=0
       fi

       echo $val
       return $val
}

function dht_get_linkto_target()
{
        local path=$1;
        echo $(getfattr -e text --only-values --absolute-names -n trusted.glusterfs.dht.linkto $path)
}

function is_dht_linkfile()
{
        local path=$1
        retval=0
        local output=$(stat -c %a $path)
        if [ $output -eq 1000 ]; then
                 retval=1
        fi

        echo $retval
        return $retval
}