Adding LoadVM capability for temporary snapshots

[Soumyadipta Das]

Hi All,

I am trying to add loadvm capabilities to the temporary snapshot mode which is entered through the "-snapshot" command argument.

In block.c file at "bdrv_append_temp_snapshot" function we can add the block snapshot information using:

    nb_sns = bdrv_snapshot_list(bs, &sn_tab);

    if (nb_sns > 0) {

        for (i = 0; i < nb_sns; i++) {

            sn = &sn_tab[i];

            bdrv_snapshot_create(bs_snapshot, sn);

        }

    }

However after adding the save state information like:

#include "migration/savevm.h"                                                                                                                        #include "migration/qemu-file.h"

QEMUFile *f_src,*f_dst;

f_src = qemu_fopen_bdrv(bs, 0);

f_dst = qemu_fopen_bdrv(bs_snapshot, 1);

qemu_put_qemu_file(f_dst, f_src);

qemu_fclose(f_src);

qemu_fclose(f_dst);

I get the following error at the linking stage:

block.o: In function `bdrv_append_temp_snapshot':

 undefined reference to `qemu_fopen_bdrv' 

                      

I have added qemu_fopen_bdrv definition to replication/savevm.h

Need help is linking block.o with replication/savevm.o

Regards,

Soumy