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Implement more accurate space calculation for boot environments.

This commit is contained in:
Slawomir Wojciech Wojtczak (vermaden) 2012-08-27 13:05:49 +02:00
parent db4bdad967
commit 61f2a79cf7
1 changed files with 21 additions and 12 deletions
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33
beadm
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@ -177,14 +177,22 @@ case ${1} in
WIDTH_NAME=$(( ${WIDTH_NAME} - ${#BENAME_STARTS_WITH} - 1 ))
printf "%-${WIDTH_NAME}s %-6s %-10s %6s %6s %s\n" \
BE Active Mountpoint Space Policy Created
# shell strips out line breaks from the command output so we add ~ to
# end of each line for use as a record separator later by AWK. The ~
# is not a valid character for use in zfs components so it is not
# likely to cause problems by appearing anywhere else in the output
USED_ALL=$( zfs list -H -t all -o name,origin,used -r ${POOL}/ROOT \
# get list of USEDBYDATASET and USED properties
USED_ALL=$( zfs list -H -t all -o name,usedbydataset,used -r sys/ROOT \
| sed 1d \
| sed '/0$/d;s/K$/ 1/;s/M$/ 1024/;s/G$/ 1048576/;s/T$/ 1073741824/;s/P$/ 1099511627776/;s/E$/ 1125899906842624/;s/Z$/ 1152921504606846976/' \
| sed 's/$/~/' )
| sed '/0$/d' \
| awk '{ gsub("-"," 0 0 ",$2); gsub("-"," 0 0 ",$3);
gsub("K"," 1 ",$2); gsub("K"," 1 ",$3);
gsub("M"," 1024 ",$2); gsub("M"," 1024 ",$3);
gsub("G"," 1048576 ",$2); gsub("G"," 1048576 ",$3);
gsub("T"," 1073741824 ",$2); gsub("T"," 1073741824 ",$3);
gsub("P"," 1099511627776 ",$2); gsub("P"," 1099511627776 ",$3);
gsub("E"," 1125899906842624 ",$2); gsub("E"," 1125899906842624 ",$3);
gsub("Z"," 1152921504606846976 ",$2); gsub("Z"," 1152921504606846976 ",$3);
print $0;
}' )
# get the list of names and origins for all boot environments
SNAPSHOT_ALL=$( zfs list -H -t all -o name,origin -d 1 ${POOL}/ROOT )
echo "${LIST}" \
| while read NAME MOUNTPOINT a b d HM Y
do
@ -208,12 +216,13 @@ case ${1} in
(*) MOUNT="-" ;;
esac
# get the name of origin snapshot for boot environment
SNAPSHOT=$( zfs list -H -t all -o name,origin ${POOL}/ROOT/${NAME} | awk -F '@' '{print $2}' )
SNAPSHOT=$( echo "${SNAPSHOT_ALL}" | awk "/^${POOL}\/ROOT\/${NAME}\t/" | awk -F '@' '{print $2}' )
# calculate space total usage for boot environment
TOTAL=$( echo ${USED_ALL} \
| awk -v RS=~ -v name="^${POOL}\/ROOT\/${NAME}"'(([@/]+.*)|$)' -v snapshot="@${SNAPSHOT}$" \
'BEGIN {total=0}
($1 ~ name) || ($1 ~ snapshot) {total += $3 * $4}
TOTAL=$( echo "${USED_ALL}" \
| awk -v name="^${POOL}\/ROOT\/${NAME}$" -v snapshot="@${SNAPSHOT}$" \
'BEGIN {total = 0}
($1 ~ name) {total += $2 * $3}
($1 ~ snapshot) {total += $4 * $5}
END {
if (total <= 1024) { unit = "K"; }
else if (total <= 1048576) { total = total / 1024; unit = "M"; }