From 6cbdf50c173c2e5a1dcaf27230b45fac9f028968 Mon Sep 17 00:00:00 2001
From: "Slawomir Wojciech Wojtczak (vermaden)" <vermaden@interia.pl>
Date: Fri, 4 May 2012 00:42:50 +0200
Subject: [PATCH] Clone only local proporties for new BE, set them at creation
 not later which improves speed.

---
 beadm | 35 ++++++++++++-----------------------
 1 file changed, 12 insertions(+), 23 deletions(-)

diff --git a/beadm b/beadm
index eccf6e6..94d0c64 100755
--- a/beadm
+++ b/beadm
@@ -68,26 +68,21 @@ __be_new() { # 1=SOURCE 2=TARGET
       echo "ERROR: Cannot create snapshot '${1}@${2##*/}'"
       exit 1
     }
-    zfs clone ${1}@${2##*/} ${2}
   }
   zfs list -H -o name -t filesystem -r ${1} \
-    | grep -v -E "${1}$" \
-    | while read I
-      do
-        DATASET=$( echo ${I} | sed s/"${POOL}\/ROOT\/${1##*/}\/"//g )
-        zfs clone ${I}@${2##*/} ${2}/${DATASET}
-        zfs set canmount=noauto ${2}/${DATASET}
-      done
-  zfs get -r -H quota,reservation,recordsize,mountpoint,sharenfs,checksum,atime,compression,exec,setuid,readonly,jailed,snapdir,aclmode,aclinherit,copies,sharesmb,primarycache,secondarycache,dedup,logbias,sync ${1} \
-    | grep -v "@" \
-    | while read I
+    | while read FS
       do
+        OPTS=""
+        while read NAME PROPERTY VALUE SOURCE
+        do
+          OPTS="-o ${PROPERTY}=${VALUE} ${OPTS}"
+        done << EOF
+$( zfs get -s local,none -H all ${FS} | grep -v -E "(type|creation|used|available|referenced|compressratio|mounted|origin|version|utf8only|normalization|casesensitivity|vscan|nbmand|mlslabel|refcompressratio|canmount)" )
+EOF
         SOURCE=${1##*/}
         TARGET=${2##*/}
-        DATASET=$( echo ${I} | awk '{print $1}' | sed s/"${POOL}\/ROOT\/${SOURCE}"/"${POOL}\/ROOT\/${TARGET}"/g )
-        PROPERTY=$( echo ${I} | awk '{print $2}' )
-        VALUE=$( echo ${I} | awk '{print $3}' )
-        zfs set ${PROPERTY}=${VALUE} ${DATASET}
+        DATASET=$( echo ${FS} | awk '{print $1}' | sed -E s/"^${POOL}\/ROOT\/${SOURCE}"/"${POOL}\/ROOT\/${TARGET}"/g )
+        zfs clone -o canmount=noauto ${OPTS} ${FS}@${2##*/} ${DATASET}
       done
   echo "Created successfully"
 }
@@ -184,7 +179,6 @@ case ${1} in
     zfs list -H -o name -t filesystem -r ${POOL}/ROOT/${2} \
       | while read I
         do
-          MOUNT=$( echo ${I} | sed s/"${POOL}\/ROOT\/${2}"//g )
           zfs set canmount=on ${I} 2> /dev/null
           zfs promote ${I} 2> /dev/null
         done
@@ -202,11 +196,6 @@ case ${1} in
     case ${CHOICE} in
       (Y|y|[Yy][Ee][Ss])
         __be_snapshot ${POOL}/ROOT/${2} && {
-          zfs list -H -o origin -r ${POOL}/ROOT/${2} \
-            | while read I
-              do
-                zfs destroy ${I}
-              done
           zfs destroy ${POOL}/ROOT/${2} 1> /dev/null 2> /dev/null || {
             echo "ERROR: Snapshot '${2}' is origin for other boot environment(s)"
             exit 1
@@ -221,13 +210,13 @@ case ${1} in
                 do
                   zfs promote ${I} 2> /dev/null
                 done
-
+          }
           echo "${ORIGINS}" \
             | while read I
               do
                 zfs destroy -r ${I} 2> /dev/null
               done
-          }
+
         }
         echo "Destroyed successfully"
         ;;