[pve-devel] [PATCH v5 qemu-server 0/3] online vm migration to external cluster

[Alexandre DERUMIER]

Hi,

any comments for the v5 ?


----- Mail original -----
De: "Alexandre Derumier" <aderumier at odiso.com>
À: "pve-devel" <pve-devel at pve.proxmox.com>
Cc: "Alexandre Derumier" <aderumier at odiso.com>
Envoyé: Mardi 29 Janvier 2019 02:20:37
Objet: [PATCH v5 qemu-server 0/3] online vm migration to external cluster

This add support to migrate a vm online to an different external cluster. 
(This a rework of a previous patch series sent 2years ago) 


qm migrate_external <vmid> <node> [--targetstorage otherstorage] [--targetvmid] [--targetkey] 
--net[n] [,bridge=<bridge>] [,firewall=<1|0>] [,link_down=<1|0>] [,rate=<number>] [,tag=<integer>] [,trunks=<vlanid[;vlanid...]>] 


- node is an ip or fqdn host from another cluster. 


OPTIONS: 
- targetstorage : allow to choose a different storage name than source.e 

- targetvmid : allow to choose a specific vmid. (default is auto/first available) 

- targetkey : allow to choose a specific ssh key located in /etc/pve/priv/migrate_external/ 

- net[n] : allow to override net config 




Migration is done through an ssh tunnel, and 1 private ssh key need to be created for each targetremotenode in: 
/etc/pve/priv/migrate_external/id_rsa_mytargetnode 

source vm is not deleted currently for safety, just stopped and the migrate lock keeped to avoid 
to restart it. 


Changelog v5: 
- api : add experimental in desc 
- api : add -net[n] instead --targetbridge. (Cleanme: I'm allowing all options from $netdesc, but filtering them later, to avoid model/mac change) 
- api : don't use noerr for ip/fqdn check. 
- QemuMigrateExternal.pm : bugfix : dclone $conf, to avoid write source vm conf if we change net config 
- QemuMigrateExternal.pm : use net[n] instead targetbridge, skip model/mac/queues. 


Changelog v4: 
- fix targetremovenode : can be fqdn or ip address 
- add optionnal targetkey && targetvmid 
- migrate : add a new QemuMigrationExternal.pm with all migration code + remove some part not used, like sync_disk and zfs replication. 
- migrate : force ssh tunnel for migration 
- vm_start : put code in patch3 + remove old no more used migration_type=external option 


Alexandre Derumier (3): 
api2 : add migrate_vm_external 
add QemuMigrateExternal.pm 
qemu : vm_start : add external_migration 

PVE/API2/Qemu.pm | 106 +++++- 
PVE/CLI/qm.pm | 2 + 
PVE/Makefile | 1 + 
PVE/QemuMigrateExternal.pm | 872 +++++++++++++++++++++++++++++++++++++++++++++ 
PVE/QemuServer.pm | 32 +- 
5 files changed, 1007 insertions(+), 6 deletions(-) 
create mode 100644 PVE/QemuMigrateExternal.pm 

-- 
2.11.0