From 362fdf170cb19301f70bc004e85dc82f83901afc Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Mon, 22 May 2017 17:17:49 +0200 Subject: migration/block: Clean up BBs in block_save_complete() We need to release any block migrations BlockBackends on the source before successfully completing the migration because otherwise inactivating the images will fail (inactivation only tolerates device BBs). Signed-off-by: Kevin Wolf Reviewed-by: Fam Zheng Reviewed-by: Eric Blake Reviewed-by: Jeff Cody --- migration/block.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) (limited to 'migration/block.c') diff --git a/migration/block.c b/migration/block.c index 4d8c2e9..114cedb 100644 --- a/migration/block.c +++ b/migration/block.c @@ -674,16 +674,14 @@ static int64_t get_remaining_dirty(void) return dirty << BDRV_SECTOR_BITS; } -/* Called with iothread lock taken. */ -static void block_migration_cleanup(void *opaque) + +/* Called with iothread lock taken. */ +static void block_migration_cleanup_bmds(void) { BlkMigDevState *bmds; - BlkMigBlock *blk; AioContext *ctx; - bdrv_drain_all(); - unset_dirty_tracking(); while ((bmds = QSIMPLEQ_FIRST(&block_mig_state.bmds_list)) != NULL) { @@ -701,6 +699,16 @@ static void block_migration_cleanup(void *opaque) g_free(bmds->aio_bitmap); g_free(bmds); } +} + +/* Called with iothread lock taken. */ +static void block_migration_cleanup(void *opaque) +{ + BlkMigBlock *blk; + + bdrv_drain_all(); + + block_migration_cleanup_bmds(); blk_mig_lock(); while ((blk = QSIMPLEQ_FIRST(&block_mig_state.blk_list)) != NULL) { @@ -844,6 +852,10 @@ static int block_save_complete(QEMUFile *f, void *opaque) qemu_put_be64(f, BLK_MIG_FLAG_EOS); + /* Make sure that our BlockBackends are gone, so that the block driver + * nodes can be inactivated. */ + block_migration_cleanup_bmds(); + return 0; } -- cgit v1.1