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block-migration: handle errors with the return codes correctly

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Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Juan Quintela 2012-08-29 21:59:22 +02:00
parent ceb2bd09a1
commit 43be3a25c9
1 changed files with 14 additions and 12 deletions
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26
block-migration.c
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@ -423,10 +423,9 @@ static int mig_save_device_dirty(QEMUFile *f, BlkMigDevState *bmds,
error:
DPRINTF("Error reading sector %" PRId64 "\n", sector);
qemu_file_set_error(f, ret);
g_free(blk->buf);
g_free(blk);
return 0;
return ret;
}
/* return value:
@ -440,7 +439,7 @@ static int blk_mig_save_dirty_block(QEMUFile *f, int is_async)
QSIMPLEQ_FOREACH(bmds, &block_mig_state.bmds_list, entry) {
ret = mig_save_device_dirty(f, bmds, is_async);
if (ret == 0) {
if (ret <= 0) {
break;
}
}
@ -600,12 +599,17 @@ static int block_save_iterate(QEMUFile *f, void *opaque)
block_mig_state.bulk_completed = 1;
}
} else {
if (blk_mig_save_dirty_block(f, 1) != 0) {
ret = blk_mig_save_dirty_block(f, 1);
if (ret != 0) {
/* no more dirty blocks */
break;
}
}
}
if (ret) {
blk_mig_cleanup();
return ret;
}
ret = flush_blks(f);
if (ret) {
@ -637,18 +641,16 @@ static int block_save_complete(QEMUFile *f, void *opaque)
all async read completed */
assert(block_mig_state.submitted == 0);
while (blk_mig_save_dirty_block(f, 0) == 0) {
/* Do nothing */
}
do {
ret = blk_mig_save_dirty_block(f, 0);
} while (ret == 0);
blk_mig_cleanup();
/* report completion */
qemu_put_be64(f, (100 << BDRV_SECTOR_BITS) | BLK_MIG_FLAG_PROGRESS);
ret = qemu_file_get_error(f);
if (ret) {
return ret;
}
/* report completion */
qemu_put_be64(f, (100 << BDRV_SECTOR_BITS) | BLK_MIG_FLAG_PROGRESS);
DPRINTF("Block migration completed\n");