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migration: make *save_live return errors

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Make *save_live() return negative values when there is one error, and
updates all callers to check for the error.

Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Juan Quintela 2011-10-19 15:22:18 +02:00
parent 42802d47dd
commit 2975725f6b
3 changed files with 29 additions and 11 deletions
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17
block-migration.c
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@ -557,6 +557,8 @@ static void blk_mig_cleanup(Monitor *mon)
static int block_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
{
int ret;
DPRINTF("Enter save live stage %d submitted %d transferred %d\n",
stage, block_mig_state.submitted, block_mig_state.transferred);
@ -580,9 +582,10 @@ static int block_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
flush_blks(f);
if (qemu_file_get_error(f)) {
ret = qemu_file_get_error(f);
if (ret) {
blk_mig_cleanup(mon);
return 0;
return ret;
}
blk_mig_reset_dirty_cursor();
@ -608,9 +611,10 @@ static int block_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
flush_blks(f);
if (qemu_file_get_error(f)) {
ret = qemu_file_get_error(f);
if (ret) {
blk_mig_cleanup(mon);
return 0;
return ret;
}
}
@ -625,8 +629,9 @@ static int block_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
/* report completion */
qemu_put_be64(f, (100 << BDRV_SECTOR_BITS) | BLK_MIG_FLAG_PROGRESS);
if (qemu_file_get_error(f)) {
return 0;
ret = qemu_file_get_error(f);
if (ret) {
return ret;
}
monitor_printf(mon, "Block migration completed\n");