Hello,
I want to know about Blktap asynchronous i/o read write operations on VHD.
I want to know detail flow of program block-VHD.c . How the read write
operations are performed on VHD .
And any improvement in code would be done for better read write operations.
Description about dynamic disk struc
I have attached the code of block-vhd.c.
On Wed, Jul 1, 2015 at 11:18 PM, Akash Talole wrote:
> Hello,
> I want to know about Blktap asynchronous i/o read write operations on VHD.
> I want to know detail flow of program block-VHD.c . How the read write
> operations are performed on
disk
structure. I wand modify code of fast clone copy for copy on read.
Currently data is copy into vhd after write.
So tell me about how step by step which functions are calling from
block-vhd so fast copy is done.
I have attached the code of block-vhd.c.
Thanks,
Akash Talole
/*
* Copyright
Hello,
Issue in tapdisk-vbd.c
Why td_queue_write(parent,treq); is called in static void
__tapdisk_vbd_reissue_td_request(td_vbd_t *vbd,td_image_t *image,
td_request_t treq) function as we can't write in parent vhd because it is
read only.
I have attached the code of tapdisk-vbd.c and block-vhd.
