9:46 p.m.
On libvirt 6.8.0 and qemu 5.1.0, when trying to live migrate "error:
internal error: Failed to reserve port" error is received and
migration does not succeed:
virsh # migrate cartridge qemu+tls://ratchet.lan/system --live
--persistent --undefinesource --copy-storage-all --verbose
error: internal error: Failed to reserve port 49153
virsh #
On target host with debug logs, nothing interesting but the error
itself is found in the logs
...
2020-10-12 02:11:33.852+0000: 6871: debug :
qemuMonitorJSONIOProcessLine:220 : Line [{"return": {}, "id":
"libvirt-373"}]
2020-10-12 02:11:33.852+0000: 6871: info :
qemuMonitorJSONIOProcessLine:239 : QEMU_MONITOR_RECV_REPLY:
mon=0x7fe784255020 reply={"return": {}, "id":
"libvirt-373"}
2020-10-12 02:11:33.852+0000: 6825: debug :
qemuDomainObjExitMonitorInternal:5615 : Exited monitor
(mon=0x7fe784255020 vm=0x55f086c81ea0 name=cartridge)
2020-10-12 02:11:33.852+0000: 6825: debug : qemuDomainObjEndJob:1140 :
Stopping job: async nested (async=migration in vm=0x55f086c81ea0
name=cartridge)
2020-10-12 02:11:33.852+0000: 6825: error :
virPortAllocatorSetUsed:299 : internal error: Failed to reserve port
49153
2020-10-12 02:11:33.852+0000: 6825: debug :
qemuMigrationParamsReset:1206 : Resetting migration parameters
0x7fe784257c30, flags 0x59
2020-10-12 02:11:33.852+0000: 6825: debug :
qemuDomainObjBeginJobInternal:835 : Starting job: job=async nested
agentJob=none asyncJob=none (vm=0x55f086c81ea0 name=cartridge, current
job=none agentJob=none async=migration in)
2020-10-12 02:11:33.852+0000: 6825: debug :
qemuDomainObjBeginJobInternal:887 : Started job: async nested
(async=migration in vm=0x55f086c81ea0 name=cartridge)
2020-10-12 02:11:33.852+0000: 6825: debug :
qemuDomainObjEnterMonitorInternal:5590 : Entering monitor
(mon=0x7fe784255020 vm=0x55f086c81ea0 name=cartridge)
2020-10-12 02:11:33.852+0000: 6825: debug :
qemuMonitorSetMigrationCapabilities:3853 : mon:0x7fe784255020
vm:0x55f086c81ea0 fd:30
2020-10-12 02:11:33.852+0000: 6825: info : qemuMonitorSend:944 :
QEMU_MONITOR_SEND_MSG: mon=0x7fe784255020
msg={"execute":"migrate-set-capabilities","arguments":{"capabilities":[{"capability":"xbzrle","state":false},{"capability":"auto-converge","state":false},{"capability":"rdma-pin-all","state":false},{"capability>
fd=-1
...
Full logs:
destination:
https://drive.google.com/file/d/1g986SbSVijvwZd8d7xDrJwo_AmKH-JnV/view?us...
source:
https://drive.google.com/file/d/1lsV2EOBxF7xH5-lgz2Psh9YSkOePXvAd/view?us...
On target host, nothing is listening on the target port:
ratchet /var/log/libvirt/qemu # netstat -lnp | grep 49153 | wc -l
0
and nc -l 49153 succeeds without issues.
Do you have any suggestions on how to proceed here?
11:20 p.m.
This problem reliably reproduces for me in 6.8.0 and at HEAD but not
in 6.7.0 with no change in environment or VM configs.
Should I file a bug?
On Sun, Oct 11, 2020 at 7:46 PM Vjaceslavs Klimovs <vklimovs(a)gmail.com> wrote:
On libvirt 6.8.0 and qemu 5.1.0, when trying to live migrate "error:
internal error: Failed to reserve port" error is received and
migration does not succeed:
virsh # migrate cartridge qemu+tls://ratchet.lan/system --live
--persistent --undefinesource --copy-storage-all --verbose
error: internal error: Failed to reserve port 49153
virsh #
On target host with debug logs, nothing interesting but the error
itself is found in the logs
...
2020-10-12 02:11:33.852+0000: 6871: debug :
qemuMonitorJSONIOProcessLine:220 : Line [{"return": {}, "id":
"libvirt-373"}]
2020-10-12 02:11:33.852+0000: 6871: info :
qemuMonitorJSONIOProcessLine:239 : QEMU_MONITOR_RECV_REPLY:
mon=0x7fe784255020 reply={"return": {}, "id":
"libvirt-373"}
2020-10-12 02:11:33.852+0000: 6825: debug :
qemuDomainObjExitMonitorInternal:5615 : Exited monitor
(mon=0x7fe784255020 vm=0x55f086c81ea0 name=cartridge)
2020-10-12 02:11:33.852+0000: 6825: debug : qemuDomainObjEndJob:1140 :
Stopping job: async nested (async=migration in vm=0x55f086c81ea0
name=cartridge)
2020-10-12 02:11:33.852+0000: 6825: error :
virPortAllocatorSetUsed:299 : internal error: Failed to reserve port
49153
2020-10-12 02:11:33.852+0000: 6825: debug :
qemuMigrationParamsReset:1206 : Resetting migration parameters
0x7fe784257c30, flags 0x59
2020-10-12 02:11:33.852+0000: 6825: debug :
qemuDomainObjBeginJobInternal:835 : Starting job: job=async nested
agentJob=none asyncJob=none (vm=0x55f086c81ea0 name=cartridge, current
job=none agentJob=none async=migration in)
2020-10-12 02:11:33.852+0000: 6825: debug :
qemuDomainObjBeginJobInternal:887 : Started job: async nested
(async=migration in vm=0x55f086c81ea0 name=cartridge)
2020-10-12 02:11:33.852+0000: 6825: debug :
qemuDomainObjEnterMonitorInternal:5590 : Entering monitor
(mon=0x7fe784255020 vm=0x55f086c81ea0 name=cartridge)
2020-10-12 02:11:33.852+0000: 6825: debug :
qemuMonitorSetMigrationCapabilities:3853 : mon:0x7fe784255020
vm:0x55f086c81ea0 fd:30
2020-10-12 02:11:33.852+0000: 6825: info : qemuMonitorSend:944 :
QEMU_MONITOR_SEND_MSG: mon=0x7fe784255020
msg={"execute":"migrate-set-capabilities","arguments":{"capabilities":[{"capability":"xbzrle","state":false},{"capability":"auto-converge","state":false},{"capability":"rdma-pin-all","state":false},{"capability>
fd=-1
...
Full logs:
destination:
https://drive.google.com/file/d/1g986SbSVijvwZd8d7xDrJwo_AmKH-JnV/view?us...
source:
https://drive.google.com/file/d/1lsV2EOBxF7xH5-lgz2Psh9YSkOePXvAd/view?us...
On target host, nothing is listening on the target port:
ratchet /var/log/libvirt/qemu # netstat -lnp | grep 49153 | wc -l
0
and nc -l 49153 succeeds without issues.
Do you have any suggestions on how to proceed here?
3:39 a.m.
On 10/12/20 4:46 AM, Vjaceslavs Klimovs wrote:
On libvirt 6.8.0 and qemu 5.1.0, when trying to live migrate
"error:
internal error: Failed to reserve port" error is received and
migration does not succeed:
virsh # migrate cartridge qemu+tls://ratchet.lan/system --live
--persistent --undefinesource --copy-storage-all --verbose
error: internal error: Failed to reserve port 49153
virsh #
Sorry for not replying earlier. But this is a clear libvirt bug and I
think it's a regression introduced by the following commit:
https://gitlab.com/libvirt/libvirt/-/commit/e74d627bb3b
The problem is, if you have two or more disks that need to be copied
over to the destination, the @server_started variable is not set after
the first iteration of the "for (i = 0; i < vm->def->ndisks; i++)"
loop.
I think this should be the fix:
diff --git i/src/qemu/qemu_migration.c w/src/qemu/qemu_migration.c
index 2f5d61f8e7..6f764b0c73 100644
--- i/src/qemu/qemu_migration.c
+++ w/src/qemu/qemu_migration.c
@@ -479,9 +479,11 @@ qemuMigrationDstStartNBDServer(virQEMUDriverPtr driver,
QEMU_ASYNC_JOB_MIGRATION_IN) < 0)
goto cleanup;
- if (!server_started &&
- qemuMonitorNBDServerStart(priv->mon, &server, tls_alias) < 0)
- goto exit_monitor;
+ if (!server_started) {
+ if (qemuMonitorNBDServerStart(priv->mon, &server,
tls_alias) < 0)
+ goto exit_monitor;
+ server_started = true;
+ }
if (qemuBlockExportAddNBD(vm, diskAlias, disk->src, diskAlias,
true, NULL) < 0)
goto exit_monitor;
Can you please give it a try? If it fixes the issue, I'll post it as a
patch.
Thanks,
Michal
5:43 a.m.
On 10/26/20 9:39 AM, Michal Privoznik wrote:
On 10/12/20 4:46 AM, Vjaceslavs Klimovs wrote:
> On libvirt 6.8.0 and qemu 5.1.0, when trying to live migrate "error:
> internal error: Failed to reserve port" error is received and
> migration does not succeed:
>
> virsh # migrate cartridge qemu+tls://ratchet.lan/system --live
> --persistent --undefinesource --copy-storage-all --verbose
> error: internal error: Failed to reserve port 49153
>
> virsh #
>
Sorry for not replying earlier. But this is a clear libvirt bug and I
think it's a regression introduced by the following commit:
https://gitlab.com/libvirt/libvirt/-/commit/e74d627bb3b
The problem is, if you have two or more disks that need to be copied
over to the destination, the @server_started variable is not set after
the first iteration of the "for (i = 0; i < vm->def->ndisks; i++)"
loop.
I think this should be the fix:
Actually, you will need a second patch too. Here's the series:
https://www.redhat.com/archives/libvir-list/2020-October/msg01358.html
Michal
11:47 p.m.
Thank you for looking into this. Confirmed that with the patch the
migration succeeds.
On Mon, Oct 26, 2020 at 3:43 AM Michal Privoznik <mprivozn(a)redhat.com> wrote:
On 10/26/20 9:39 AM, Michal Privoznik wrote:
> On 10/12/20 4:46 AM, Vjaceslavs Klimovs wrote:
>> On libvirt 6.8.0 and qemu 5.1.0, when trying to live migrate "error:
>> internal error: Failed to reserve port" error is received and
>> migration does not succeed:
>>
>> virsh # migrate cartridge qemu+tls://ratchet.lan/system --live
>> --persistent --undefinesource --copy-storage-all --verbose
>> error: internal error: Failed to reserve port 49153
>>
>> virsh #
>>
>
> Sorry for not replying earlier. But this is a clear libvirt bug and I
> think it's a regression introduced by the following commit:
>
> https://gitlab.com/libvirt/libvirt/-/commit/e74d627bb3b
>
> The problem is, if you have two or more disks that need to be copied
> over to the destination, the @server_started variable is not set after
> the first iteration of the "for (i = 0; i < vm->def->ndisks;
i++)" loop.
> I think this should be the fix:
>
Actually, you will need a second patch too. Here's the series:
https://www.redhat.com/archives/libvir-list/2020-October/msg01358.html
Michal
1522
days inactive
1537
days old
4 comments
2 participants
participants (2)
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Michal Privoznik -
Vjaceslavs Klimovs