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#!/bin/rc
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# desc: initialize disks for a venti server
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# prereq: mountdist
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switch($1){
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case checkready checkdone
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	if(! ~ $fstype fossil+venti){
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		fmtventi=notdone
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		export fmtventi
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		exit
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	}
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	if(! test -e /bin/venti/fmtarenas || ! test -e /bin/venti/fmtisect || ! test -e /bin/venti/fmtindex){
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		bind -a /n/dist/386/bin/venti /bin/venti
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		if(! test -e /bin/venti/fmtarenas || ! test -e /bin/venti/fmtisect || ! test -e /bin/venti/fmtindex){
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			fmtventi=notdone
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			export fmtventi
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			exit
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		}
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	}
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	ff=`{ls /dev/sd*/arenas* /dev/fs/arenas* >[2]/dev/null}
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	if(~ $#ff 0){
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		fmtventi=notdone
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		export fmtventi
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		exit
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	}
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	gg=()
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	for(f in $ff)
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		if(isventi $f)
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			gg=($gg $f)
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	if(~ $#gg 0){
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		fmtventi=ready
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		export fmtventi
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		exit
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	}
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	ventiarena=$gg(1)
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	export ventiarena
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	fmtventi=done
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	export fmtventi
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	exit
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case go
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	ff=`{ls /dev/sd*/arenas* /dev/fs/arenas* >[2]/dev/null}
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	if(~ $#ff 0){
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		echo 'You need to create a partition or partitions to hold the Venti arenas.'
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		echo 'The arena partition names must begin with "arenas".'
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		echo
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		fmtventi=notdone
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		export fmtventi
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		exit
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	}
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	default=(-d $"ff)
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	if(! ~ $#ventiarena 0){
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		default=(-d $"ventiarena)
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	}
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	echo You have the following Venti arena partitions.
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	ls -l $ff
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	echo
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	prompt $default 'Venti arena partitions to use'
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	aa=`{echo $rd}
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	bad=no
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	for(a in $aa){
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		if(! ~ $a $ff){
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			echo 'Bad venti arena partition' $a
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			fmtventi=notdone
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			export fmtventi
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			exit
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		}
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	}
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	ventiarena=$aa
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	export ventiarena
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	gg=`{ls /dev/sd*/isect* /dev/fs/isect* >[2]/dev/null}
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	if(~ $#gg 0){
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		echo 'You need to create a partition or partitions to hold the Venti indices.'
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		echo 'The index partition names must begin with "isect".'
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		echo
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		fmtventi=notdone
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		export fmtventi
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		exit
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	}
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	default=(-d $"gg)
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	if(! ~ $#ventiindex 0){
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		default=(-d $"ventiindex)
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	}
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	echo You have the following Venti index partitions.
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	ls -l $gg
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	echo
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	prompt $default 'Venti index partitions to use'
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	aa=`{echo $rd}
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	bad=no
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	for(a in $aa){
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		if(! ~ $a $gg){
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			echo 'Bad venti index partition' $a
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			fmtventi=notdone
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			export fmtventi
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			exit
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		}
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	}
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	ventiindex=$aa
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	export ventiindex
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	n=-1
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	fmta=()
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	for(a in $ventiarena){
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		do=yes
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		n=`{hoc -e 1+$n}
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		if(isventiarenas $a){
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			echo File $a is already formatted as a Venti arenas partition.
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			prompt -d no 'Reformat '$a yes no
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			do=$rd
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		}
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		if(~ $do yes)
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			fmta=($fmta arenas$n:$a)
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	}
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	n=-1
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	fmti=()
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	for(a in $ventiindex){
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		do=yes
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		n=`{hoc -e 1+$n}
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		if(isventiisect $a){
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			echo File $a is already formatted as a Venti index section.
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			prompt -d no 'Reformat '$a yes no
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			do=$rd
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		}
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		if(~ $do yes)
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			fmti=($fmti isect$n:$a)
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	}
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	echo Formatting Venti arenas and indices (this takes a while).
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	# do each disk in parallel
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	echo good >/tmp/fmt
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	dd=()
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	for(a in $fmta $fmti){
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		d=`{echo $a | sed 's!.*:(/.*/).*!\1!'}
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		if(! ~ $d $dd)
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			dd=($dd $d)
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	}
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	for(d in $dd){
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		{
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			for(a in $fmta){
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				i=`{echo $a | sed 's!(.*):(/.*/)(.*)!\1 \2 \2\3!'}
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				if(~ $i(2) $d){
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					echo $i(3) ...
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					venti/fmtarenas $i(1) $i(3) || echo bad >/tmp/fmt
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					echo done with $i(3)
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				}
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			}
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			for(a in $fmti){
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				i=`{echo $a | sed 's!(.*):(/.*/)(.*)!\1 \2 \2\3!'}
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				if(~ $i(2) $d){
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					echo $i(3) ...
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					venti/fmtisect $i(1) $i(3) || echo bad >/tmp/fmt
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					echo done with $i(3)
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				}
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			}
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		} &
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	}
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	wait
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	if(~ bad `{cat /tmp/fmt}){
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		echo There were errors formatting the indices and arenas.
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		fmtventi=ready
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		export fmtventi
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		exit errors
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	}
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	echo Done formatting Venti arenas and indices.
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	v=$ventiarena(1)
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	echo Storing Venti config on $v...
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	{
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		echo index main
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		for(i in $ventiindex)
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			echo isect $i
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		for(a in $ventiarena)
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			echo arenas $a
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	} | venti/conf -w $v
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	echo Initializing index...
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	venti/fmtindex $v
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	echo Done with Venti!
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}
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