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@bithive
Last active December 16, 2015 07:29
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Bash script for creating ZFS volumes on SmartOS and sharing them over iSCSI
#!/bin/sh
bold=$(tput bold)
norm=$(tput sgr0)
ENV=""
GUID=""
NAME=""
NEWVOL=""
OLDVOL=""
VIEW=""
volExists() {
$(zfs list $1 > /dev/null 2>&1)
if [ $? -eq 0 ]; then
return 0
else
return 1
fi
}
createVolume() {
# prompt for base volume
echo "Select the base volume to clone:"
select OLDVOL in "squeeze-amd64" "squeeze-i686" "wheezy-amd64" "wheezy-i686" "None"; do
if [[ $OLDVOL != "None" ]]; then
OLDVOL="zones/$OLDVOL"
# make sure the zvol exists
if ! volExists $OLDVOL; then
echo "Fatal: Base volume $OLDVOL does not exist!"
exit 1
fi
# prompt for snapshot
SNAPSHOTS=$(zfs list -r -t snapshot -o name,creation $OLDVOL | sed 1d | cut -d' ' -f1 | cut -d'@' -f2)
echo "Select a snapshot of ${bold}$OLDVOL${norm} to use as the starting point:"
select SNAPSHOT in $SNAPSHOTS; do
$(zfs clone $OLDVOL@$SNAPSHOT $NEWVOL)
break
done
else
echo "Enter the size of the volume with unit suffix (e.g. 1024M or 1T)"
read SIZE
$(zfs create -V $SIZE -s $NEWVOL)
fi
if [ $? -ne 0 ]; then
echo "Fatal: Error while creating volume, aborting."
exit 1
else
echo "Volume ${bold}$NEWVOL${norm} created:"
echo "$(zfs list $NEWVOL)"
fi
break
done
}
luExists() {
if [[ $(sbdadm list-lu | sed 1,5d | grep -i $1$ | wc -l) != '0' ]]; then
return 0
else
return 1
fi
}
viewExists() {
VIEW=$(stmfadm list-view -l $1 2>&1)
return $?
}
# prompt for name
echo "Enter the base name for this VM (e.g. solr, postgres, myapp, etc)."
echo "You will specify the environment later:"
read NAME
# prompt for environment
echo "Select the environment:"
select ENV in "production" "staging" "development" "test"; do
ENV=$(echo $ENV | cut -c 1-3)
NEWVOL="zones/$NAME-$ENV"
if [[ ! -z $ENV ]]; then
break
else
echo "Invalid selection."
fi
done
# check if the volume exists already
if volExists $NEWVOL; then
echo "Volume ${bold}$NEWVOL${norm} exists:"
echo "$(zfs list $NEWVOL)"
else
createVolume
fi
# create logical unit, get GUID
if ! luExists $NEWVOL; then
GUID=$(sbdadm create-lu /dev/zvol/rdsk/$NEWVOL | sed 1,4d | cut -d' ' -f1)
if [ $? -ne 0 ]; then
echo "Fatal: Error while creating logical unit, aborting."
exit 1
fi
else
GUID=$(sbdadm list-lu | sed 1,5d | grep -i $1$ | cut -d' ' -f1)
fi
# create view
if ! viewExists $GUID; then
$(stmfadm add-view $GUID)
if [ $? -ne 0 ]; then
echo "Fatal: Error while adding view, aborting."
exit 1
fi
fi
exit 0
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