On 04/20/2011 12:23 PM, Wen Congyang wrote:
At 04/20/2011 05:41 PM, Jason Krieg Write:
Hi,
is tunnelled migration with libvirt 0.9.0 and qemu-kvm 0.14.0 broken ?
all I get is an error "unknown migration protocol"
while looking at the code in src/qemu/qemu_migration.c
src/qemu/qemu_migration.c:
/* Start the QEMU daemon, with the same command-line arguments plus * -incoming stdin (which qemu_command might convert to exec:cat or fd:n) */ internalret = qemuProcessStart(dconn, driver, vm, "stdin", true, dataFD[1], NULL, VIR_VM_OP_MIGRATE_IN_START);
migrateFrom is set to "stdin" but in src/qemu/qemu_command.c there is no such match which ends in the above error. Yes, the tunnelled migration has been broken.
Please applied the following patch and try it again:
From 55dac9d193644b7957ea730b8739633cd185d494 Mon Sep 17 00:00:00 2001 From: Wen Congyang<wency@cn.fujitsu.com> Date: Wed, 20 Apr 2011 18:20:12 +0800 Subject: [PATCH] fix tunnelled migration's regression
If the migrateFrom is "stdio" not "stdin", qemuBuildCommandLine() will convert it to exec:cat or fd:n.
--- src/qemu/qemu_migration.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c index 43741e1..bba76d5 100644 --- a/src/qemu/qemu_migration.c +++ b/src/qemu/qemu_migration.c @@ -316,9 +316,9 @@ qemuMigrationPrepareTunnel(struct qemud_driver *driver, goto endjob; } /* Start the QEMU daemon, with the same command-line arguments plus - * -incoming stdin (which qemu_command might convert to exec:cat or fd:n) + * -incoming stdio (which qemu_command might convert to exec:cat or fd:n) */ - internalret = qemuProcessStart(dconn, driver, vm, "stdin", true, dataFD[1], + internalret = qemuProcessStart(dconn, driver, vm, "stdio", true, dataFD[1], NULL, VIR_VM_OP_MIGRATE_IN_START); if (internalret< 0) { qemuAuditDomainStart(vm, "migrated", false);
that was my first guess but it does not work the remote monitor socket does not show up libvirt is running as root so it should not be a permission problem qemuMonitorOpenUnix:289 : monitor socket did not show up.: Connection refused qemuProcessWaitForMonitor:1059 : internal error process exited while connecting to monitor: Migration failed. Exit code fd:14(-22), exiting.