runinstallvm: Add SIZE parameter for block device

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

2 files changed, 4 insertions, 1 deletions

diff --git a/README b/README
index cc2d482..21ad1f2 100644
--- a/README
+++ b/README
@@ -70,6 +70,8 @@ at some point. Maybe.
   for runinstallvm.sh, with the exception of DISK and EFIVAR (which it
   overrides). In addition, it provides the following:
 
+  - SIZE: Size of the virtio disk storage. Defaults to 16GB.
+
   - KEEPME: When provided, create a directory with that name, and
     store the VM disk and EFI variables in that directory. Also
     generate a "runvm.sh" script in the same directory, which calls
diff --git a/runinstallvm.sh b/runinstallvm.sh
index 77a1676..73d5cf0 100755
--- a/runinstallvm.sh
+++ b/runinstallvm.sh
@@ -1,13 +1,14 @@
 #!/bin/bash
 
 OUT=${KEEPME-tmp}
+size=${SIZE-16G}
 
 mkdir -p $OUT || exit 1
 
 export DISK=$(mktemp -p $OUT -t XXXXXXXXXXXXXXXX.img)
 export EFIVAR=$OUT/$(basename $DISK .img).fd
 
-truncate -s 16G $DISK
+truncate -s $size $DISK
 truncate -s 64M $EFIVAR
 
 if [ ! -z "$KEEPME" ]; then