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#!/bin/bash

function get_layout()
{
        layout=`getfattr -n trusted.glusterfs.dht -e hex $1 2>&1|grep dht |cut -d = -f2`
        if [ $? -eq 1]
        then
                return -1
        else
                return $layout
        fi

}

## 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
}