retry fallocating samizdat.disk.img with smaller disk sizes

1 files changed, 12 insertions, 1 deletions

diff --git a/src/qemu.sh b/src/qemu.sh
index 130b688..81ffa1f 100755
--- a/src/qemu.sh
+++ b/src/qemu.sh
@@ -73,8 +73,19 @@ case $(arch) in
     *) qemu=qemu-system-i386 ;;
 esac
 
+try_fallocate()
+{
+    for size in "$@"; do
+        fallocate -l "$size" "$disk"~tmp || continue
+        mv "$disk"~tmp "$disk"
+        return
+    done
+    false
+}
+
 if [ ! -e "$disk" ]; then
-    fallocate -l 10GB "$disk"
+    try_fallocate 16GB 8GB 4GB 2GB 1GB ||
+        echo "Warning: no virtual disk (could not create $disk)" >&2
 fi
 
 if grep -q '^flags.*\<vmx\>' /proc/cpuinfo; then