[pve-devel] applied: [PATCH qemu-server v3 0/5] implement suspend to disk

Thomas Lamprecht t.lamprecht at proxmox.com
Tue Mar 19 09:13:04 CET 2019


On 3/14/19 5:04 PM, Dominik Csapak wrote:
> implement suspend to disk for vms
> 
> the idea is the following:
> 
> add a 'suspending' lock
> halt execution of the vm
> save the vmstate to a file/disk/etc.
> hard poweroff the vm (qmp quit)
> add 'suspended' lock
> 
> on the next start check for 'suspended' lock
> resume from saved state
> 
> the suspending lock prevents any changes to the vm that would prevent a resume
> (config change, migration, etc)
> the suspended lock prevents starting a vm that is being suspended
> 
> changes from v2:
> * use 2 locks
> * better error handling/logging
> * only stop explicitly when not using 'todisk' (savevm-start handles that)
> * leave prepare state in QemuConfig
> 
> changes from v1:
> * rename variable s/stat/state/
> * abort if vm is locked with 'backup' lock
> * remove the lock on error
> * include date into state file name and make the parameters more explicit
> * pull out multiple uses of has_lock
> * add patch for explicitly giving the target storage for the state
> 
> Dominik Csapak (5):
>   correct comment about size
>   implement suspend to disk for running vms
>   resume suspended vm on start
>   add ability to suspend a vm to disk from the api
>   add statestorage parameter to suspend API
> 
>  PVE/API2/Qemu.pm  | 21 +++++++++++-
>  PVE/QemuConfig.pm | 28 +++++++++++-----
>  PVE/QemuServer.pm | 99 +++++++++++++++++++++++++++++++++++++++++++++++++++----
>  3 files changed, 132 insertions(+), 16 deletions(-)
> 

applied series, thanks!



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