[libvirt] [RFC PATCH 0/4] Add new function about block backup

[Maxim Nestratov]

08.06.2016 9:21, Rudy Zhang пишет:

> Add new function about block backup, it supports the drive-backup function
> in qemu, it supports three modes: full, top, incremental.
>
> How to use it? As usual, we must do the full backup at first, if it's
> successfull, next time, we can do the incremental backup, because it has
> the bitmap to trace the dirty io. The incermental backup is faster.
> If backup fail at some time, we must do the full backup again, only in this
> way, we can keep the backup data correctly.

Hi Rudy,

A couple of months ago I started a thread regading backup API and we 
came to a sort of agreement on how it should look like, see [1].
Though it's not ready yet for sending to mailing list I already started 
to work on it and I will certainly send first reference implementation 
shortly.
Once it appears in the list I will appriciate any help. ETA - end of 
this month.

Best,
Maxim

[1] https://www.redhat.com/archives/libvir-list/2016-April/msg00401.html

> Rudy Zhang (4):
>    Introduce virDomainBlockBackup API
>    qemu drive support block backup.
>    virsh: support blockbackup in virsh command
>    libvirt-test: libvirt test supports drive-backup
>
>   docs/apibuild.py                                   |   3 +-
>   include/libvirt/libvirt-domain.h                   |  15 ++
>   src/conf/domain_conf.h                             |  12 ++
>   src/driver-hypervisor.h                            |   9 +
>   src/libvirt-domain.c                               |  56 ++++++
>   src/libvirt_public.syms                            |   5 +
>   src/qemu/qemu_blockjob.c                           |   2 +
>   src/qemu/qemu_capabilities.c                       |   4 +
>   src/qemu/qemu_capabilities.h                       |   5 +
>   src/qemu/qemu_driver.c                             | 197 +++++++++++++++++++++
>   src/qemu/qemu_monitor.c                            |  59 ++++++
>   src/qemu/qemu_monitor.h                            |  23 +++
>   src/qemu/qemu_monitor_json.c                       | 124 +++++++++++++
>   src/qemu/qemu_monitor_json.h                       |  23 +++
>   src/remote/remote_driver.c                         |   1 +
>   src/remote/remote_protocol.x                       |  17 +-
>   src/remote_protocol-structs                        |   9 +
>   tests/qemucaps2xmldata/all_1.6.0-1.caps            |   1 +
>   tests/qemucaps2xmldata/nodisksnapshot_1.6.0-1.caps |   1 +
>   tools/virsh-domain.c                               | 149 ++++++++++++++++
>   20 files changed, 713 insertions(+), 2 deletions(-)
>