Plan 9 from Bell Labs’s /usr/web/sources/patch/applied/dumpvacroots-fix/dumpvacroots

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
Download the Plan 9 distribution.


#!/bin/rc
# dumpvacroots - dumps all the vac scores ever stored to the venti server
# if nothing else, this illustrates that you have to control access
# to the physical disks storing the archive!

ventihttp=`{echo $venti | sed 's/^[a-z]+!([0-9\.]+)![a-z0-9]+$/\1/
		s/^[a-z]+!([0-9\.]+)/\1/; s/$/:8000/'
}

hget http://$ventihttp/index | 
	awk '
 		/^index=/ { blockSize=0+substr($3, 11) }
 		/^arena=/ { arena=substr($1, 7) }
 		/^	arena=/ {
			start = (0+substr($5, 2))-blockSize
			printf("venti/printarena -o %.0f %s\n", start, $3 "")
		}
	' |
	rc |
	awk '$3==16 {printf("vac:%s\n", $2)}'


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