[libvirt] [RFC PATCHv2 1/3] qemu: use lighter-weight fd:n on incoming tunneled migration

[Eric Blake]

On 03/03/2011 04:54 AM, Daniel P. Berrange wrote:
> On Wed, Mar 02, 2011 at 03:07:04PM -0700, Eric Blake wrote:
>> Outgoing migration still uses a Unix socket and or exec netcat until
>> the next patch.
>>
>> * src/qemu/qemu_migration.c (qemuMigrationPrepareTunnel):
>> Replace Unix socket with simpler pipe.
>> Suggested by Paolo Bonzini.
>> ---
>>
>> v1 was ack'd here but not yet applied:
>>  https://www.redhat.com/archives/libvir-list/2011-January/msg00742.html
>> changes in v2: rebase to latest upstream
>>
>>  src/qemu/qemu_migration.c |   44 ++++++++++++--------------------------------
>>  1 files changed, 12 insertions(+), 32 deletions(-)
> 
> ACK

Self-NACK - I forgot to FD_CLOEXEC the write side of the pipe
(virCommand explicitly closes it anyways, but we might as well be clean
on our intentions).  I'll fix that in v3.  Patch 2/3 is fine as is, but
no point in pushing it until there's a client.  And patch 3/3 will be
heavily reworked in v3 (I'm up to at least 5 separate patches, and
counting).

-- 
Eric Blake   eblake at redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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