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Re: [Qemu-devel] [Bug 589315] [NEW] qemu: Improve error reporting when
From: |
Yoshiaki Tamura |
Subject: |
Re: [Qemu-devel] [Bug 589315] [NEW] qemu: Improve error reporting when migration can't connect |
Date: |
Fri, 4 Jun 2010 06:41:48 +0900 |
2010/6/4 Cole Robinson <address@hidden>:
> Public bug reported:
>
> Tested with upstream qemu as of Jun 3 2010
>
> If the source qemu instance can't connect to the migration destination (say
> there is no listening QEMU instance, or port is blocked by a firewall), all we
> get is info migrate -> Migration status: failed. This is all we have to report
> back to libvirt users if their firewall is misconfigured, which is crappy.
>
> Ideally, if we can't connect, migration would fail immediately with a relevant
> message and strerror(). More info from 'info migrate' would be nice too, no
> idea how this will play with QMP though.
>
> As a slightly related issue, try entering
>
> migrate tcp:127.0.0.0:6000
>
> We get a 'migration failed' error, and then the monitor hangs!
>
> ** Affects: qemu
> Importance: Undecided
> Status: New
>
> --
> qemu: Improve error reporting when migration can't connect
> https://bugs.launchpad.net/bugs/589315
> You received this bug notification because you are a member of qemu-
> devel-ml, which is subscribed to QEMU.
>
> Status in QEMU: New
>
> Bug description:
> Tested with upstream qemu as of Jun 3 2010
>
> If the source qemu instance can't connect to the migration destination (say
> there is no listening QEMU instance, or port is blocked by a firewall), all we
> get is info migrate -> Migration status: failed. This is all we have to report
> back to libvirt users if their firewall is misconfigured, which is crappy.
>
> Ideally, if we can't connect, migration would fail immediately with a relevant
> message and strerror(). More info from 'info migrate' would be nice too, no
> idea how this will play with QMP though.
>
> As a slightly related issue, try entering
>
> migrate tcp:127.0.0.0:6000
>
> We get a 'migration failed' error, and then the monitor hangs!
>
Hi,
Does the following patch fix the problem?
Thanks,
Yoshi
[PATCH] migration-tcp: call migrate_fd_error() instead of close() and free().
This patch fixes the following error report. When changing
migration-tcp.c to call migrate_fd_error() instead of close() and
free() by itself, monitor is resumed, and returns allocated mig_state
is set to current_migration in migration.c allows us to print "info
migrate".
Reported-by: Cole Robinson <address@hidden>
Signed-off-by: Yoshiaki Tamura <address@hidden>
--
qemu: Improve error reporting when migration can't connect
https://bugs.launchpad.net/bugs/589315
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
Status in QEMU: New
Bug description:
Tested with upstream qemu as of Jun 3 2010
If the source qemu instance can't connect to the migration destination (say
there is no listening QEMU instance, or port is blocked by a firewall), all we
get is info migrate -> Migration status: failed. This is all we have to report
back to libvirt users if their firewall is misconfigured, which is crappy.
Ideally, if we can't connect, migration would fail immediately with a relevant
message and strerror(). More info from 'info migrate' would be nice too, no
idea how this will play with QMP though.
As a slightly related issue, try entering
migrate tcp:127.0.0.0:6000
We get a 'migration failed' error, and then the monitor hangs!
--
---
migration-tcp.c | 4 +---
1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/migration-tcp.c b/migration-tcp.c
index 95ce722..43af2e0 100644
--- a/migration-tcp.c
+++ b/migration-tcp.c
@@ -128,9 +128,7 @@ MigrationState *tcp_start_outgoing_migration(Monitor *mon,
if (ret < 0 && ret != -EINPROGRESS && ret != -EWOULDBLOCK) {
DPRINTF("connect failed\n");
- close(s->fd);
- qemu_free(s);
- return NULL;
+ migrate_fd_error(s);
} else if (ret >= 0)
migrate_fd_connect(s);
--
1.7.0.31.g1df487
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