Re: [PATCH 07/18] Introduce fault tolerant VM transaction QEMUFile and ft_mode.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



[ trimming cc to kvm & qemu lists]

Yoshiaki Tamura <tamura.yoshiaki@xxxxxxxxxxxxx> wrote:
> Juan Quintela wrote:
>> Yoshiaki Tamura<tamura.yoshiaki@xxxxxxxxxxxxx>  wrote:
>>> This code implements VM transaction protocol.  Like buffered_file, it
>>> sits between savevm and migration layer.  With this architecture, VM
>>> transaction protocol is implemented mostly independent from other
>>> existing code.
>>
>> Could you explain what is the difference with buffered_file.c?
>> I am fixing problems on buffered_file, and having something that copies
>> lot of code from there makes me nervous.
>
> The objective is different:
>
> buffered_file buffers data for transmission control.
> ft_trans_file adds headers to the stream, and controls the transaction
> between sender and receiver.
>
> Although ft_trans_file sometimes buffers date, but it's not the main objective.
> If you're fixing the problems on buffered_file, I'll keep eyes on them.
>
>>> +typedef ssize_t (FtTransPutBufferFunc)(void *opaque, const void *data, size_t size);
>>
>> Can we get some sharing here?
>> typedef ssize_t (BufferedPutFunc)(void *opaque, const void *data, size_t size);
>>
>> There are not so much types for a write function that the 1st element is
>> one opaque :p
>
> You're right, but I want to keep ft_trans_file independent of
> buffered_file at this point.  Once Kemari gets merged, I'm happy to
> work with you to fix the problems on buffered_file and ft_trans_file,
> and refactoring them.

My goal is getting its own thread for migration on 0.15, that
basically means that we can do rm buffered_file.c.  I guess that
something similar could happen for kemari.

But for now, this is just the start + handwaving, once I start doing the
work I will told you.

Later, Juan.
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux