[libvirt] [PATCHv2 9/9] qemu: snapshot: Add support for external active snapshots on gluster

[Peter Krempa]

On 01/27/14 23:40, Eric Blake wrote:
> On 01/16/2014 06:14 AM, Peter Krempa wrote:
>> Add support for gluster backed images as sources for snapshots in the
>> qemu driver. This will also simplify adding further network backed
>> volumes as sources for snapshot in case qemu will support them.
>> ---
>>  docs/formatsnapshot.html.in |   4 +-
>>  src/qemu/qemu_command.c     |   2 +-
>>  src/qemu/qemu_command.h     |   9 ++++
>>  src/qemu/qemu_driver.c      | 113 +++++++++++++++++++++++++++++++++++++++++---
>>  4 files changed, 118 insertions(+), 10 deletions(-)
> 
>>
>>              Libvirt currently supports the <code>type</code> element in the qemu
>> -            driver and supported values are <code>file</code> and
>> -            <code>block</code> <span class="since">(since 1.2.2)</span>.
>> +            driver and supported values are <code>file</code>, <code>block</code>
>> +            and <code>gluster</code> <span class="since">(since 1.2.2)</span>.
> 
> Rather, type <code>network</code> with a protocol of gluster.
> 
> 
>> +
>> +    return qemuGetDriveSourceString(qemuSnapshotDiskGetActualType(disk),
> 
> qemuSnapshotDiskGetActualType(disk) is now just a fancy wrapper around
> disk->type, since 4/9.  Do we even need that function, or can we just
> delete it and simplify all callers?

Currently the function isn't useful. I'd like to keep it in case we will
support snapshots on type='volume' in the future.

> 
> ACK with those fixes.
> 


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