added lvextend needed for gnt-instance grow-disk

diff --git a/sbin/lvextend b/sbin/lvextend
new file mode 100755 (executable)
index 0000000..97eea48
--- /dev/null
+++ b/sbin/lvextend
@@ -0,0 +1,41 @@
+#!/bin/sh -e
+
+. /usr/share/ganeti/extstorage/zfs/defaults.sh
+
+# gnt-instance grow-disk t-plain 0 100M
+# lvextend -L +102400k --test --alloc contiguous /dev/ffzgvg/fa2e60f4-22e5-4620-baac-385418139ce7.disk0
+# lvextend -L +102400k --test --alloc cling /dev/ffzgvg/fa2e60f4-22e5-4620-baac-385418139ce7.disk0
+# lvextend -L +102400k --test --alloc normal /dev/ffzgvg/fa2e60f4-22e5-4620-baac-385418139ce7.disk0
+
+if echo $* | grep -q $EXTP_VG ; then
+       TEST='-'
+       while [ ! -z "$1" ] ; do
+               case $1 in 
+
+               -L*) VOL_SIZE_INC=`echo $2 | sed -e 's/-L//' -e 's/^\+//' -e 's/k$//'` ;;
+               --test)  TEST='test' ;;
+               /dev/$EXTP_VG/*) VOL_NAME=`echo $1 | cut -d/ -f4`
+
+               esac
+               shift
+       done
+
+       if [ $TEST = 'test' ] ; then
+
+               available=`zfs get -H -p available -o value $EXTP_ZFS/$VOL_NAME`
+               if [ `expr $available \/ 1024` -gt $VOL_SIZE_INC ] ; then
+                       exit 0 # OK to enlarge
+               else
+                       exit 1
+               fi
+
+       else
+
+               volsize=`zfs get -H -p volsize -o value $EXTP_ZFS/$VOL_NAME`
+               zfs set volsize=`expr $volsize \/ 1024 + $VOL_SIZE_INC`k $EXTP_ZFS/$VOL_NAME
+
+       fi
+
+else
+       /sbin/lvm lvextend $*
+fi

diff --git a/t/lvextend b/t/lvextend
new file mode 100644 (file)
index 0000000..9de599b
--- /dev/null
+++ b/t/lvextend
@@ -0,0 +1,4 @@
+# gnt-instance grow-disk t-plain 0 100M
+lvextend -L +102400k --test --alloc contiguous /dev/ffzgvg/fa2e60f4-22e5-4620-baac-385418139ce7.disk0
+lvextend -L +102400k --test --alloc cling /dev/ffzgvg/fa2e60f4-22e5-4620-baac-385418139ce7.disk0
+lvextend -L +102400k --test --alloc normal /dev/ffzgvg/fa2e60f4-22e5-4620-baac-385418139ce7.disk0