Allow the user to create a file backstore by specifying a new file name
and a size. We create the file and blow it up to the size (will be fast if
sparse files are in use.
Handle rename of convert_human_to_bytes -> human_to_bytes
Signed-off-by: Andy Grover <agrover@xxxxxxxxxx>
---
targetcli/ui_backstore.py | 21 ++++++++++++++++++---
1 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/targetcli/ui_backstore.py b/targetcli/ui_backstore.py
index d73260d..ad25732 100644
--- a/targetcli/ui_backstore.py
+++ b/targetcli/ui_backstore.py
@@ -23,7 +23,7 @@ from rtslib import FileIOBackstore, BlockBackstore
from rtslib import PSCSIBackstore, RDMCPBackstore
from rtslib import FileIOStorageObject, BlockStorageObject
from rtslib import PSCSIStorageObject, RDMCPStorageObject
-from rtslib.utils import get_block_type, is_disk_partition
+from rtslib.utils import get_block_type, is_disk_partition, human_to_bytes
from configshell import ExecutionError
import os
@@ -267,9 +267,24 @@ class UIFileIOBackstore(UIBackstore):
if os.path.isfile(file_or_dev):
new_size = str(os.path.getsize(file_or_dev))
if size:
- self.shell.log.info("%s exists, using its size (%s bytes)" +
- " instead" % (file_or_dev, new_size))
+ self.shell.log.info("%s exists, using its size (%s bytes) instead"
+ % (file_or_dev, new_size))
size = new_size
+ else:
+ # create file and extend to given file size
+ if not size:
+ raise ExecutionError("Attempting to create file for new" +
+ " fileio backstore, need a size")
+
+ f = open(file_or_dev, "w+")
+ try:
+ f.seek(human_to_bytes(size)-1)
+ f.write('\0')
+ except IOError:
+ f.close()
+ os.remove(file_or_dev)
+ raise ExecutionError("Could not expand file to size")
+ f.close()
try:
so = FileIOStorageObject(
--
1.7.1
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