[PATCH v2 8/9] qemu: add bps_max and friends to qemu command generation

[Matthias Gatto <matthias.gatto@xxxxxxxxxxxx>]

Check the arability of the options with the current qemu binary, add them in the varable opt if yes,
print a message if not.

Signed-off-by: Matthias Gatto <matthias.gatto@xxxxxxxxxxxx>
---
 src/qemu/qemu_command.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 8a69976..9e84e98 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -3598,6 +3598,55 @@ qemuBuildDriveStr(virConnectPtr conn,
                           disk->blkdeviotune.write_iops_sec);
     }
 
+    /* block I/O throttling 1.7 */
+    if ((disk->blkdeviotune.total_bytes_sec_max ||
+         disk->blkdeviotune.read_bytes_sec_max ||
+         disk->blkdeviotune.write_bytes_sec_max ||
+         disk->blkdeviotune.total_iops_sec_max ||
+         disk->blkdeviotune.read_iops_sec_max ||
+         disk->blkdeviotune.write_iops_sec_max) &&
+        !virQEMUCapsGet(qemuCaps, QEMU_CAPS_DRIVE_IOTUNE_MAX)) {
+        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                       _("there is some block I/O throttling paramater that are not supported with this "
+                         "QEMU binary(need QEMU 1.7 or superior)"));
+        goto error;
+    }
+
+    if (disk->blkdeviotune.total_bytes_sec_max) {
+        virBufferAsprintf(&opt, ",bps_max=%llu",
+                          disk->blkdeviotune.total_bytes_sec_max);
+    }
+
+    if (disk->blkdeviotune.read_bytes_sec_max) {
+        virBufferAsprintf(&opt, ",bps_rd_max=%llu",
+                          disk->blkdeviotune.read_bytes_sec_max);
+    }
+
+    if (disk->blkdeviotune.write_bytes_sec_max) {
+        virBufferAsprintf(&opt, ",bps_wr_max=%llu",
+                          disk->blkdeviotune.write_bytes_sec_max);
+    }
+
+    if (disk->blkdeviotune.total_iops_sec_max) {
+        virBufferAsprintf(&opt, ",iops_max=%llu",
+                          disk->blkdeviotune.total_iops_sec_max);
+    }
+
+    if (disk->blkdeviotune.read_iops_sec_max) {
+        virBufferAsprintf(&opt, ",iops_rd_max=%llu",
+                          disk->blkdeviotune.read_iops_sec_max);
+    }
+
+    if (disk->blkdeviotune.write_iops_sec_max) {
+        virBufferAsprintf(&opt, ",iops_wr_max=%llu",
+                          disk->blkdeviotune.write_iops_sec_max);
+    }
+
+    if (disk->blkdeviotune.write_iops_sec_max) {
+        virBufferAsprintf(&opt, ",iops_size=%llu",
+                          disk->blkdeviotune.size_iops_sec);
+    }
+
     if (virBufferCheckError(&opt) < 0)
         goto error;
 
-- 
1.8.3.1

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