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Re: [libvirt] [PATCH 4/6] conf: Parse and format the new XML



On 2013年01月04日 08:21, Eric Blake wrote:
On 01/02/2013 07:37 AM, Osier Yang wrote:
Like "rawio", "sgio" is only allowed for block disk of device
type "lun".

It doesn't default disk->sgio to "filtered" when parsing, as
it won't be able to distinguish explicitly requested "filtered"
and a default "filtered" in driver then. We have to error out for
explicit request when the kernel doesn't support the new sysfs
knob "unpriv_sgio", however, for defaulted "filtered", we can
just ignore it if the kernel doesn't support "unpriv_sgio".
---
  src/conf/domain_conf.c                             |   55 +++++++++++++++-----
  src/conf/domain_conf.h                             |   10 ++++
  ...qemuxml2argv-disk-scsi-lun-passthrough-sgio.xml |   32 +++++++++++
  tests/qemuxml2xmltest.c                            |    1 +
  4 files changed, 85 insertions(+), 13 deletions(-)
  create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-lun-passthrough-sgio.xml


+enum virDomainDiskSGIO {
+    VIR_DOMAIN_DISK_SGIO_DEFAULT = 0,
+    VIR_DOMAIN_DISK_SGIO_FILTERED,
+    VIR_DOMAIN_DISK_SGIO_UNFILTERED,
+
+    VIR_DOMAIN_DISK_SGIO_LAST
+};
+
  typedef struct _virDomainBlockIoTuneInfo virDomainBlockIoTuneInfo;
  struct _virDomainBlockIoTuneInfo {
      unsigned long long total_bytes_sec;
@@ -638,6 +646,7 @@ struct _virDomainDiskDef {
      virStorageEncryptionPtr encryption;
      bool rawio_specified;
      int rawio; /* no = 0, yes = 1 */

Don't know why we didn't make this 'bool', but that's pre-existing and
would be a separate cleanup patch.

+    int sgio;

I'd add /* enum virDomainDiskSGIO */, to make it easier to see what goes
in this int.

Okay, will add it when pushing.


ACK.



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