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Max Reitz 484108293d qcow2: Force preallocation with data-file-raw 
Setting the qcow2 data-file-raw bit means that you can ignore the
qcow2 metadata when reading from the external data file.  It does not
mean that you have to ignore it, though.  Therefore, the data read must
be the same regardless of whether you interpret the metadata or whether
you ignore it, and thus the L1/L2 tables must all be present and give a
1:1 mapping.

This patch changes 244's output: First, the qcow2 file is larger right
after creation, because of metadata preallocation.  Second, the qemu-img
map output changes: Everything that was not explicitly discarded or
zeroed is now a data area.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210326145509.163455-2-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
 		2021-03-30 13:02:10 +02:00
..
export block/export: disable VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD for now 2021-03-19 10:15:06 +01:00
monitor block: Remove monitor command block_passwd 2021-03-23 22:31:56 +01:00
accounting.c block/accounting: Use lock guard macros 2020-12-11 17:52:39 +01:00
aio_task.c
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amend.c
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backup-top.c backup-top: Refuse I/O in inactive state 2021-03-08 14:55:18 +01:00
backup-top.h qapi: backup: add perf.use-copy-range parameter 2021-01-26 14:36:37 +01:00
backup.c backup: Remove nodes from job in .clean() 2021-03-08 14:55:18 +01:00
blkdebug.c block: check return value of bdrv_open_child and drop error propagation 2021-03-08 15:07:09 -06:00
blklogwrites.c block: check return value of bdrv_open_child and drop error propagation 2021-03-08 15:07:09 -06:00
blkreplay.c block: check return value of bdrv_open_child and drop error propagation 2021-03-08 15:07:09 -06:00
blkverify.c block: check return value of bdrv_open_child and drop error propagation 2021-03-08 15:07:09 -06:00
block-backend.c sysemu: Let VMChangeStateHandler take boolean 'running' argument 2021-03-09 23:13:57 +01:00
block-copy.c block/block-copy: drop unused argument of block_copy() 2021-01-26 14:36:37 +01:00
block-gen.h
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bochs.c
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cloop.c
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commit.c block: use return status of bdrv_append() 2021-02-12 15:39:44 -06:00
copy-on-read.c copy-on-read: skip non-guest reads if no copy needed 2021-01-26 14:36:37 +01:00
copy-on-read.h copy-on-read: add filter drop function 2021-01-26 11:26:54 +01:00
coroutines.h
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create.c
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crypto.c block: add bdrv_co_delete_file_noerr 2021-02-15 15:10:14 +01:00
crypto.h nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
curl.c curl: Disconnect sockets from CURLState 2021-03-19 10:15:06 +01:00
dirty-bitmap.c block: remove dirty bitmaps 'status' field 2021-03-18 09:22:55 +00:00
dmg-bz2.c
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dmg-lzfse.c block: Remove unused include 2020-11-09 15:44:21 +01:00
dmg.c block: Fix some code style problems, "foo* bar" should be "foo *bar" 2020-11-09 18:42:47 +01:00
dmg.h
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file-posix.c block: remove support for using "file" driver with block/char devices 2021-03-18 09:22:55 +00:00
file-win32.c
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filter-compress.c
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gluster.c qapi: More complex uses of QAPI_LIST_APPEND 2021-01-28 08:08:45 +01:00
io.c block: add new BlockDriver handler: bdrv_cancel_in_flight 2021-02-12 09:45:18 -06:00
io_uring.c io_uring: do not use pointer after free 2020-11-17 12:26:48 +01:00
iscsi-opts.c
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iscsi.c Remove superfluous timer_del() calls 2021-01-08 15:13:38 +00:00
linux-aio.c
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meson.build parallels: support bitmap extension for read-only mode 2021-03-08 14:56:55 +01:00
mirror.c block/mirror: Fix mirror_top's permissions 2021-03-29 18:09:00 +02:00
nbd.c block/nbd: implement .bdrv_cancel_in_flight 2021-02-12 09:45:18 -06:00
nfs.c block/nfs: fix int overflow in nfs_client_open_qdict 2020-12-18 11:48:39 +01:00
null.c
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nvme.c block/nvme: Trace NVMe spec version supported by the controller 2021-02-02 17:05:38 +01:00
parallels-ext.c parallels: support bitmap extension for read-only mode 2021-03-08 14:56:55 +01:00
parallels.c parallels: support bitmap extension for read-only mode 2021-03-08 14:56:55 +01:00
parallels.h parallels: support bitmap extension for read-only mode 2021-03-08 14:56:55 +01:00
preallocate.c block: introduce preallocate filter 2020-12-18 12:35:55 +01:00
qapi-sysemu.c
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qapi.c block: remove 'dirty-bitmaps' field from 'BlockInfo' struct 2021-03-18 09:22:55 +00:00
qcow.c
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qcow2-bitmap.c nbd patches for 2021-03-09 2021-03-11 13:57:08 +00:00
qcow2-cache.c
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qcow2-cluster.c qcow2: Fix corruption on write_zeroes with MAY_UNMAP 2020-11-24 11:29:41 +01:00
qcow2-refcount.c
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qcow2-snapshot.c
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qcow2-threads.c
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qcow2.c qcow2: Force preallocation with data-file-raw 2021-03-30 13:02:10 +02:00
qcow2.h block/qcow2-bitmap: return status from qcow2_store_persistent_dirty_bitmaps 2021-03-08 16:03:21 -06:00
qed-check.c
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qed-cluster.c
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qed-l2-cache.c
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qed-table.c
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qed.c block/qed: bdrv_qed_do_open: deal with errp 2021-03-08 16:03:32 -06:00
qed.h
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quorum.c block: check return value of bdrv_open_child and drop error propagation 2021-03-08 15:07:09 -06:00
raw-format.c block/raw-format: implement .bdrv_cancel_in_flight handler 2021-02-12 09:45:18 -06:00
rbd.c qobject: Change qobject_to_json()'s value to GString 2020-12-19 10:38:43 +01:00
replication.c qapi: backup: add max-chunk and max-workers to x-perf struct 2021-01-26 14:36:37 +01:00
sheepdog.c
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snapshot.c block: rename and alter bdrv_all_find_snapshot semantics 2021-02-08 11:19:51 +00:00
ssh.c
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stream.c stream: Don't crash when node permission is denied 2021-03-19 10:15:06 +01:00
throttle-groups.c block/throttle-groups: throttle_group_co_io_limits_intercept(): 64bit bytes 2021-02-03 08:14:00 -06:00
throttle.c
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trace-events block/io: use int64_t bytes in copy_range 2021-02-03 08:17:12 -06:00
trace.h
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vdi.c
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vhdx-endian.c
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vhdx-log.c
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vhdx.c
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vhdx.h
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vmdk.c qapi: Use QAPI_LIST_APPEND in trivial cases 2021-01-28 08:08:45 +01:00
vpc.c block/vpc: Use sizeof() instead of HEADER_SIZE for footer size 2020-12-18 12:43:30 +01:00
vvfat.c block/vvfat: Fix bad printf format specifiers 2020-11-03 16:24:56 +01:00
win32-aio.c
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write-threshold.c
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