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Re: [libvirt] [PATCHv3 3/6] esx: reject unknown flags

On 07/15/2011 09:30 AM, Matthias Bolte wrote:
2011/7/15 Eric Blake<eblake redhat com>:
Silently ignored flags get in the way of new features that
use those flags.

Regarding ESX migration flags - right now, ESX silently enforces
VIR_MIGRATE_LIVE, even if those flags were not supplied; it ignored
other flags.  This patch does not change the implied bits (it permits
but does not require them), but enforces only the supported bits.
If further cleanup is needed to be more particular about migration
flags, that should be a separate patch.

It turns out that libvirt.c also handles (or at least claims to handle) VIR_MIGRATE_PAUSED on behalf of ESX, so I'm squashing this in:

diff --git i/src/esx/esx_driver.c w/src/esx/esx_driver.c
index 80d687b..9b0a541 100644
--- i/src/esx/esx_driver.c
+++ w/src/esx/esx_driver.c
@@ -3845,7 +3845,8 @@ esxDomainSetSchedulerParameters(virDomainPtr domain,
 #define ESX_MIGRATION_FLAGS                     \
     (VIR_MIGRATE_PERSIST_DEST |                 \
      VIR_MIGRATE_UNDEFINE_SOURCE |              \
+     VIR_MIGRATE_LIVE |                         \

 static int
 esxDomainMigratePrepare(virConnectPtr dconn,

libvirt.c also handles VIR_MIGRATE_PEER2PEER and VIR_MIGRATE_TUNNELLED, but only if the driver advertises those features, which ESX does not. So by the time the ESX callbacks are reached, those flag bits can never be set.


I've pushed this now.

Eric Blake   eblake redhat com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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