[libvirt] [PATCH v2 04/12] migration: remove direct migration dependency on version1 of driver
John Ferlan
jferlan at redhat.com
Wed Sep 16 22:40:38 UTC 2015
On 09/10/2015 09:20 AM, Nikolay Shirokovskiy wrote:
> From: Michal Privoznik <mprivozn at redhat.com>
>
> Direct migration should work if *perform3 is present but *perform
> is not. This is situation when driver migration is implemented
> after new version of driver function is introduced. We should not
> be forced to support old version too as its parameter space is
> subspace of newer one.
>
> This patch has been already sent to mailist and has form
> that finally suggested by Michal Privoznik. I just include
> it in the set as it is not merged yet.
This last paragraph could go below the "---" since you're providing
"extra" information that we don't necessarily want in git history...
> ---
> src/libvirt-domain.c | 13 ++++++++-----
> 1 files changed, 8 insertions(+), 5 deletions(-)
>
> diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c
> index 6f10c74..15de714 100644
> --- a/src/libvirt-domain.c
> +++ b/src/libvirt-domain.c
> @@ -3412,16 +3412,15 @@ virDomainMigrateDirect(virDomainPtr domain,
> NULLSTR(xmlin), flags, NULLSTR(dname), NULLSTR(uri),
> bandwidth);
>
> - if (!domain->conn->driver->domainMigratePerform) {
> - virReportUnsupportedError();
> - return -1;
> - }
> -
> /* Perform the migration. The driver isn't supposed to return
> * until the migration is complete.
> */
> if (VIR_DRV_SUPPORTS_FEATURE(domain->conn->driver, domain->conn,
> VIR_DRV_FEATURE_MIGRATION_V3)) {
> + if (!domain->conn->driver->domainMigratePerform3) {
> + virReportUnsupportedError();
> + return -1;
> + }
Ahhh... now I see where patch 10 is going... Direct has no dconnuri...
Hmmm... and I know why Coverity is complaining...
John
> VIR_DEBUG("Using migration protocol 3");
> /* dconn URI not relevant in direct migration, since no
> * target libvirtd is involved */
> @@ -3437,6 +3436,10 @@ virDomainMigrateDirect(virDomainPtr domain,
> dname,
> bandwidth);
> } else {
> + if (!domain->conn->driver->domainMigratePerform) {
> + virReportUnsupportedError();
> + return -1;
> + }
> VIR_DEBUG("Using migration protocol 2");
> if (xmlin) {
> virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
>
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