>>Maybe can we hack qemu, and make the file rename from qemu, at the end of the
>>migration ?
in migration.c
static void migrate_fd_completed(MigrationState *s)
{
DPRINTF("setting completed state\n");
if (migrate_fd_cleanup(s) < 0) {
s->state = MIG_STATE_ERROR;
} else {
s->state = MIG_STATE_COMPLETED;
>>>>> move config file here
runstate_set(RUN_STATE_POSTMIGRATE);
}
notifier_list_notify(&migration_state_notifiers, s);
}
----- Mail original -----
De: "Alexandre DERUMIER" <aderum...@odiso.com>
À: "Michael Rasmussen" <m...@datanom.net>
Cc: pve-devel@pve.proxmox.com
Envoyé: Samedi 23 Février 2013 12:44:50
Objet: Re: [pve-devel] successfull migration but failed resume
I think the main problem is that qemu is doing the switch himself.
(when all memory is transferred, the source process is paused and the target
process continue.
But we move check the config file, by checking the migration status in a loop
with qmp command, with some ms sleep
So it's possible that the migration is finished some milliseconds before we see
it and move the file.
Also qmp check command could fail.
Maybe can we hack qemu, and make the file rename from qemu, at the end of the
migration ?
Dietmar, what do you think about this ?
----- Mail original -----
De: "Michael Rasmussen" <m...@datanom.net>
À: pve-devel@pve.proxmox.com
Envoyé: Samedi 23 Février 2013 11:21:35
Objet: Re: [pve-devel] successfull migration but failed resume
On Sat, 23 Feb 2013 08:05:35 +0100 (CET)
Alexandre DERUMIER <aderum...@odiso.com> wrote:
>
> Ideas are welcome to improve this ;)
>
>
Since it will always be a deal between to nodes you could implement
something like the TCP 3-way handshake (SYN,SYN-ACK,ACK).
Node A sends a Migrate SYNchronize packet to Node B
Node B receives A's SYN
Node B sends a SYNchronize-ACKnowledgement
Node A receives B's SYN-ACK
Node A sends ACKnowledge
Node B receives ACK.
Migration is completed.
--
Hilsen/Regards
Michael Rasmussen
Get my public GnuPG keys:
michael <at> rasmussen <dot> cc
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mir <at> datanom <dot> net
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE501F51C
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--------------------------------------------------------------
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