5:25 p.m.
Unlike postcopy migration there is no --live flag check for
postcopy-after-precopy.
Signed-off-by: Kothapally Madhu Pavan <kmp(a)linux.vnet.ibm.com>
---
tools/virsh-domain.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index de2a22c..798a1ff 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -10317,6 +10317,12 @@ cmdMigrate(vshControl *ctl, const vshCmd *cmd)
}
if (vshCommandOptBool(cmd, "postcopy-after-precopy")) {
+ if (!live_flag) {
+ virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
+ _("post-copy migration is not supported with "
+ "non-live or paused migration"));
+ goto cleanup;
+ }
iterEvent = virConnectDomainEventRegisterAny(
priv->conn, dom,
VIR_DOMAIN_EVENT_ID_MIGRATION_ITERATION,
3:41 a.m.
On 26.08.2016 11:25, Kothapally Madhu Pavan wrote:
Unlike postcopy migration there is no --live flag check for
postcopy-after-precopy.
Signed-off-by: Kothapally Madhu Pavan <kmp(a)linux.vnet.ibm.com>
---
tools/virsh-domain.c | 6 ++++++
1 file changed, 6 insertions(+)
ACKed and pushed.
Michal
4:51 a.m.
On Fri, Aug 26, 2016 at 21:41:31 +0200, Michal Privoznik wrote:
On 26.08.2016 11:25, Kothapally Madhu Pavan wrote:
> Unlike postcopy migration there is no --live flag check for
> postcopy-after-precopy.
>
> Signed-off-by: Kothapally Madhu Pavan <kmp(a)linux.vnet.ibm.com>
> ---
> tools/virsh-domain.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
ACKed and pushed.
This doesn't make any sense. First, post-copy migration is enabled with
--postcopy option to migrate command and --postcopy-after-precopy is
just an additional flag for post-copy migration. So if virsh was to
report such an error, it should check for --postcopy option. But such
check doesn't belong to libvirt at all, the appropriate libvirt driver
is supposed to check for the flags and report invalid combinations.
Jirka
7:12 p.m.
On 08/27/2016 02:21 AM, Jiri Denemark wrote:
On Fri, Aug 26, 2016 at 21:41:31 +0200, Michal Privoznik wrote:
> On 26.08.2016 11:25, Kothapally Madhu Pavan wrote:
>> Unlike postcopy migration there is no --live flag check for
>> postcopy-after-precopy.
> >> Signed-off-by: Kothapally Madhu Pavan
<kmp(a)linux.vnet.ibm.com >> ---
>> tools/virsh-domain.c | 6 ++++++
>> 1 file changed, 6 insertions(+)
> > ACKed and pushed.
This doesn't make any sense. First, post-copy migration is enabled with
--postcopy option to migrate command and --postcopy-after-precopy is
just an additional flag for post-copy migration. So if virsh was to
report such an error, it should check for --postcopy option. But such
check doesn't belong to libvirt at all, the appropriate libvirt driver
is supposed to check for the flags and report invalid combinations.
I have proposed
this patch as the qemu driver doesn't have
postcopy-after-precopy
flag and this bug can be fixed by minimal changes in libvirt. If we have
to check for
invalid combinations in appropriate libvirt drivers, we need to create a
flag for
postcopy-after-precopy migration. I will be happy to send another patch
if this is what
needed.
Thanks,
Madhu Pavan.
7:42 p.m.
On Mon, Aug 29, 2016 at 16:42:04 +0530, Madhu Pavan wrote:
On 08/27/2016 02:21 AM, Jiri Denemark wrote:
> On Fri, Aug 26, 2016 at 21:41:31 +0200, Michal Privoznik wrote:
>> On 26.08.2016 11:25, Kothapally Madhu Pavan wrote:
>>> Unlike postcopy migration there is no --live flag check for
>>> postcopy-after-precopy.
>>>
>>> Signed-off-by: Kothapally Madhu Pavan <kmp(a)linux.vnet.ibm.com>
>>> ---
>>> tools/virsh-domain.c | 6 ++++++
>>> 1 file changed, 6 insertions(+)
>>>
>> ACKed and pushed.
> This doesn't make any sense. First, post-copy migration is enabled with
> --postcopy option to migrate command and --postcopy-after-precopy is
> just an additional flag for post-copy migration. So if virsh was to
> report such an error, it should check for --postcopy option. But such
> check doesn't belong to libvirt at all, the appropriate libvirt driver
> is supposed to check for the flags and report invalid combinations.
I have proposed this patch as the qemu driver doesn't have
postcopy-after-precopy
flag and this bug can be fixed by minimal changes in libvirt. If we have
to check for
invalid combinations in appropriate libvirt drivers, we need to create a
flag for
postcopy-after-precopy migration. I will be happy to send another patch
if this is what
needed.
Heh, you're right indeed. I think I really shouldn't try reviewing stuff
during a conference. So the place is correct, but I still think it
should be done in a different way. As I said --postcopy-after-precopy is
just an additional flag for --postcopy and thus we should check that
--postcopy is present rather than checking for --live and the error
message should reflect that (e.g., "--postcopy-after-precopy can only be
used with --postcopy").
Jirka
2983
days inactive
2988
days old
4 comments
4 participants
participants (4)
-
Jiri Denemark -
Kothapally Madhu Pavan -
Madhu Pavan
-
Michal Privoznik