commit e25ceb76e5b90ec4197cbe1cb859200bf6ee1284
author Paolo Bonzini <pbonzini@redhat.com> Thu Apr 19 11:59:11 2012 +0200
committer Paolo Bonzini <pbonzini@redhat.com> Thu Apr 19 17:19:37 2012 +0200
tree 8e8f621867f93a431e3b45fb13bef8c0629a13cc
parent 38ceff0412621a35fa618fb46cd7f0f6ff037c13

nbd: obey FUA on reads

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

nbd.c

diff --git a/nbd.c b/nbd.c
index d4dafc6..153709f 100644
--- a/nbd.c
+++ b/nbd.c
@@ -842,6 +842,15 @@
     case NBD_CMD_READ:
         TRACE("Request type is READ");
 
+        if (request.type & NBD_CMD_FLAG_FUA) {
+            ret = bdrv_co_flush(exp->bs);
+            if (ret < 0) {
+                LOG("flush failed");
+                reply.error = -ret;
+                goto error_reply;
+            }
+        }
+
         ret = bdrv_read(exp->bs, (request.from + exp->dev_offset) / 512,
                         req->data, request.len / 512);
         if (ret < 0) {