Bug 918619

virsh said (more or less - I got l10n'd output):
error:Unable to read from monitor: Connection terminated by the other side

src /etc/libvirt/qemu.conf:
spice_listen = "::"
spice_tls = 1
spice_tls_x509_cert_dir = "/etc/pki/libvirt-spice"

dst /etc/libvirt/qemu.conf:
spice_listen = "0.0.0.0"
spice_tls = 1
spice_tls_x509_cert_dir = "/etc/pki/libvirt-spice"
user = "root"

Hi David,

Which transport protocol did you use when cross this issue?

I can not reproduce this bug with 'ssh' method for repeating 1024 rounds:

# cat migrate.sh 
#!/bin/bash

# Migrate a guest back and forth between two hosts, printing progress as it goes
GUEST=$1
HOST1=$2
HOST2=$3
OPTIONS="--live  --p2p"
#TRANSPORT="tcp"
#TRANSPORT="tls"
TRANSPORT="ssh"

date
for i in `seq 1 1024`;
do
    echo "Loop ${i}: Migrating ${GUEST} from ${HOST1} to ${HOST2}"
    echo "COMMAND: virsh -c qemu+${TRANSPORT}://root@${HOST1}/system migrate ${OPTIONS} ${GUEST} qemu+${TRANSPORT}://root@${HOST2}/system"
    time virsh -c qemu+${TRANSPORT}://root@${HOST1}/system migrate ${OPTIONS} ${GUEST} qemu+${TRANSPORT}://root@${HOST2}/system

    echo "Loop ${i}: Migrating ${GUEST} back from ${HOST2} to ${HOST1}"
    echo "COMMAND: virsh -c qemu+${TRANSPORT}://root@${HOST2}/system migrate ${OPTIONS} ${GUEST} qemu+${TRANSPORT}://root@${HOST1}/system"
    time virsh -c qemu+${TRANSPORT}://root@${HOST2}/system migrate ${OPTIONS} ${GUEST} qemu+${TRANSPORT}://root@${HOST1}/system
done
date


My /etc/libvirt/qemu.conf file is same with comment #6, and my guest xml as next attachment.

Thanks,
EricLee

Created attachment 706342 [details]
guest xml file

Hi Eric, I used local unix socket to access one host and plain tcp without authentication for other host.

(In reply to comment #9)
> Hi Eric, I used local unix socket to access one host and plain tcp without
> authentication for other host.

Hi David,

I still can not reproduce it:

# cat migrate.sh 
#!/bin/bash

# Migrate a guest back and forth between two hosts, printing progress as it goes
GUEST=$1
HOST1=$2
HOST2=$3
OPTIONS="--live  --p2p"
TRANSPORT="tcp"
#TRANSPORT="tls"
#TRANSPORT="ssh"

date
for i in `seq 1 512`;
do
    echo "Loop ${i}: Migrating ${GUEST} from ${HOST1} to ${HOST2}"
    echo "COMMAND: virsh -c qemu+ssh://root@${HOST1}/system migrate ${OPTIONS} ${GUEST} qemu+${TRANSPORT}://root@${HOST2}/system"
    time virsh -c qemu+ssh://root@${HOST1}/system migrate ${OPTIONS} ${GUEST} qemu+${TRANSPORT}://root@${HOST2}/system

    echo "Loop ${i}: Migrating ${GUEST} back from ${HOST2} to ${HOST1}"
    echo "COMMAND: virsh -c qemu+${TRANSPORT}://root@${HOST2}/system migrate ${OPTIONS} ${GUEST} qemu+ssh://root@${HOST1}/system"
    time virsh -c qemu+${TRANSPORT}://root@${HOST2}/system migrate ${OPTIONS} ${GUEST} qemu+ssh://root@${HOST1}/system
done
date

Do I miss some important steps?

Thanks,
EricLee

No, you don't. It happened to me just once in many occasions, so I'm afraid that only the developer who'll look at the code may pinpoint the root cause and more reliable reproducer.

I didn't find any issues in the code and I can't reproduce it either.