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| author |   Jan Kiszka <jan.kiszka@web.de> | 2009-11-30 20:34:55 +0100 |
|---|---|---|
| committer |   Anthony Liguori <aliguori@us.ibm.com> | 2009-12-03 11:45:39 -0600 |
| commit | 792773b2255d25c6f5fe9dfa0ae200debab92de4 (patch) | |
| tree | f1bfd9c276a21abc992d9c29a702e39f97c71697 /block-migration.c | |
| parent | block migration: Increase dirty chunk size to 1M (diff) | |
| download | qemu-kvm-792773b2255d25c6f5fe9dfa0ae200debab92de4.tar.gz qemu-kvm-792773b2255d25c6f5fe9dfa0ae200debab92de4.tar.bz2 qemu-kvm-792773b2255d25c6f5fe9dfa0ae200debab92de4.zip | |
block migration: Skip zero-sized disks
No need to migrate emptiness (risking divide by zero later on).
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'block-migration.c')
| -rw-r--r-- | block-migration.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/block-migration.c b/block-migration.c index a066f1924..258a88afc 100644 --- a/block-migration.c +++ b/block-migration.c @@ -222,6 +222,7 @@ static void init_blk_migration(Monitor *mon, QEMUFile *f) { BlkMigDevState *bmds; BlockDriverState *bs; + int64_t sectors; block_mig_state.submitted = 0; block_mig_state.read_done = 0; @@ -231,14 +232,19 @@ static void init_blk_migration(Monitor *mon, QEMUFile *f) for (bs = bdrv_first; bs != NULL; bs = bs->next) { if (bs->type == BDRV_TYPE_HD) { + sectors = bdrv_getlength(bs) >> BDRV_SECTOR_BITS; + if (sectors == 0) { + continue; + } + bmds = qemu_mallocz(sizeof(BlkMigDevState)); bmds->bs = bs; bmds->bulk_completed = 0; - bmds->total_sectors = bdrv_getlength(bs) >> BDRV_SECTOR_BITS; + bmds->total_sectors = sectors; bmds->completed_sectors = 0; bmds->shared_base = block_mig_state.shared_base; - block_mig_state.total_sector_sum += bmds->total_sectors; + block_mig_state.total_sector_sum += sectors; if (bmds->shared_base) { monitor_printf(mon, "Start migration for %s with shared base " |