ee91c82533
If we didn't freeze any filesystems we should not even attempt thawing them. Additionally 'guest-fsfreeze-freeze' fails if the filesystems are already frozen, where thawing them may break users data integrity if they used VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE accidentally after an explicit virDomainFSFreeze and the next snapshot without that flag would be taken with already thawed filesystems. This effectively reverts 7c736bab06479ccec59df69fb79a5c06d112d8fb . Libvirt nowadays checks whether the guest agent is connected and pings it before issuing an command so it's very unlikely that we'd end up in a situation where qemuSnapshotCreateActiveExternal froze filesystems and didn't thaw them. Additionally we now discourage the use of VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE since users have better control if they freeze the FS themselves. Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Libvirt API for virtualization
Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
For some of these hypervisors, it provides a stateful management daemon which runs on the virtualization host allowing access to the API both by non-privileged local users and remote users.
Layered packages provide bindings of the libvirt C API into other languages including Python, Perl, PHP, Go, Java, OCaml, as well as mappings into object systems such as GObject, CIM and SNMP.
Further information about the libvirt project can be found on the website:
License
The libvirt C API is distributed under the terms of GNU Lesser
General Public License, version 2.1 (or later). Some parts of the code
that are not part of the C library may have the more restrictive GNU
General Public License, version 2.0 (or later). See the files
COPYING.LESSER and COPYING for full license
terms & conditions.
Installation
Instructions on building and installing libvirt can be found on the website:
https://libvirt.org/compiling.html
Contributing
The libvirt project welcomes contributions in many ways. For most components the best way to contribute is to send patches to the primary development mailing list. Further guidance on this can be found on the website:
https://libvirt.org/contribute.html
Contact
The libvirt project has two primary mailing lists:
- libvirt-users@redhat.com (for user discussions)
- libvir-list@redhat.com (for development only)
Further details on contacting the project are available on the website: