Lidong Chen 3928d50bf1 migration/block: use blk_pwrite_zeroes for each zero cluster ...

BLOCK_SIZE is (1 << 20), qcow2 cluster size is 65536 by default,
this may cause the qcow2 file size to be bigger after migration.
This patch checks each cluster, using blk_pwrite_zeroes for each
zero cluster.

[Initialize cluster_size to BLOCK_SIZE to prevent a gcc uninitialized
variable compiler warning.  In reality we always initialize cluster_size
in a conditional but gcc doesn't know that.
--Stefan]

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Lidong Chen <lidongchen@tencent.com>
Message-id: 1492050868-16200-1-git-send-email-lidongchen@tencent.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

2017-04-21 10:36:12 +01:00

..

block.c

migration/block: use blk_pwrite_zeroes for each zero cluster

2017-04-21 10:36:12 +01:00

colo-comm.c

COLO: Add 'x-colo-lost-heartbeat' command to trigger failover

2016-10-30 15:17:39 +05:30

colo-failover.c

COLO: Implement the process of failover for primary VM

2016-10-30 15:17:39 +05:30

colo.c

Add a new qmp command to do checkpoint, query xen replication status

2017-02-28 11:02:12 -08:00

exec.c

migration: set name for all I/O channels created

2016-10-27 09:13:10 +02:00

fd.c

migration: set name for all I/O channels created

2016-10-27 09:13:10 +02:00

Makefile.objs

build: remove --enable-colo/--disable-colo

2017-01-16 17:52:35 +01:00

migration.c

block: Ignore guest dev permissions during incoming migration

2017-04-07 14:44:05 +02:00

postcopy-ram.c

postcopy: Check for shared memory

2017-03-16 09:02:26 +01:00

qemu-file-channel.c

migration: introduce a new QEMUFile impl based on QIOChannel

2016-05-26 11:31:24 +05:30

qemu-file.c

add 'release-ram' migrate capability

2017-02-13 17:27:13 +00:00

qjson.c

qjson: free str

2016-08-08 00:00:24 +04:00

ram.c

Change the method to calculate dirty-pages-rate

2017-03-16 08:55:56 +01:00

rdma.c

migration/rdma: Don't flag an error when we've been told about one

2016-10-13 17:22:38 +02:00

savevm.c

postcopy: Transmit ram size summary word

2017-02-28 11:30:23 +00:00

socket.c

io: change the QIOTask callback signature

2017-01-23 15:32:18 +00:00

tls.c

migration: use "" as the default for tls-creds/hostname

2017-03-16 08:57:08 +01:00

trace-events

exec: ram_block_discard_range

2017-02-28 11:30:23 +00:00

vmstate.c

vmstate: fix failed iotests case 68 and 91

2017-03-16 08:59:52 +01:00

xbzrle.c

util: move declarations out of qemu-common.h

2016-03-22 22:20:17 +01:00