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0b3f21e6a9
qemu/block
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Richard W.M. Jones 0b3f21e6a9 block/ssh: Set bdrv_has_zero_init according to the file type. 
If the remote is a regular file, set it to true (ie. reads of
uninitialized areas in a newly created file will return zeroes).
If we can't prove that, return false (a safe default).

Tested by adding a debugging print statement [not part of this commit]
and creating a remote file and a remote block device:

  $ ./qemu-img create ssh://localhost/tmp/new 100M
  Formatting 'ssh://localhost/tmp/new', fmt=raw size=104857600
  filename ssh://localhost/tmp/new: has_zero_init = 1
  $ sudo lvcreate -L 1G -n tmp /dev/fedora
    Logical volume "tmp" created
  $ ./qemu-img create ssh://localhost/dev/fedora/tmp 1G
  Formatting 'ssh://localhost/dev/fedora/tmp', fmt=raw size=1073741824
  filename ssh://localhost/dev/fedora/tmp: has_zero_init = 0

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-06-28 09:20:27 +02:00
..
backup.c block: add basic backup support to block driver 2013-06-28 09:20:26 +02:00
blkdebug.c blkdebug: Add BLKDBG_FLUSH_TO_OS/DISK events 2013-06-06 11:27:22 +02:00
blkverify.c block: Remove filename parameter from .bdrv_file_open() 2013-04-22 11:34:35 +02:00
bochs.c block: Add options QDict to .bdrv_open() 2013-03-15 16:07:49 +01:00
cloop.c block: Add options QDict to .bdrv_open() 2013-03-15 16:07:49 +01:00
commit.c block: Make BlockJobTypes const 2013-06-28 09:20:27 +02:00
cow.c block: Add options QDict to bdrv_file_open() prototypes 2013-03-22 17:51:31 +01:00
curl.c curl: Don't set curl options on the handle just before it's going to be deleted. 2013-06-17 17:47:59 +02:00
dmg.c block: Make find_image_format safe with NULL filename 2013-03-22 17:51:32 +01:00
gluster.c block: Remove filename parameter from .bdrv_file_open() 2013-04-22 11:34:35 +02:00
iscsi.c iscsi: reorganize iscsi_readcapacity_sync 2013-06-18 12:43:03 +02:00
linux-aio.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
Makefile.objs block: add basic backup support to block driver 2013-06-28 09:20:26 +02:00
mirror.c block: Make BlockJobTypes const 2013-06-28 09:20:27 +02:00
nbd.c nbd: strip braces from literal IPv6 address in URI 2013-06-18 11:43:00 +02:00
parallels.c block: Add options QDict to .bdrv_open() 2013-03-15 16:07:49 +01:00
qapi.c qmp: add ImageInfo in BlockDeviceInfo used by query-block 2013-06-07 13:37:45 +02:00
qcow2-cache.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
qcow2-cluster.c qcow2: Batch discards 2013-06-24 10:25:17 +02:00
qcow2-refcount.c qcow2: Batch discards 2013-06-24 10:25:17 +02:00
qcow2-snapshot.c qcow2: Add refcount update reason to all callers 2013-06-24 10:25:17 +02:00
qcow2.c qcow2: Batch discards 2013-06-24 10:25:17 +02:00
qcow2.h qcow2: Batch discards 2013-06-24 10:25:17 +02:00
qcow.c qcow: allow sub-cluster compressed write to last cluster 2013-04-22 10:27:58 +02:00
qed-check.c qed: mark image clean after repair succeeds 2012-08-10 10:25:12 +02:00
qed-cluster.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-gencb.c Use glib memory allocation and free functions 2011-08-20 23:01:08 -05:00
qed-l2-cache.c qed: do not evict in-use L2 table cache entries 2012-03-12 15:14:06 +01:00
qed-table.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qed.c block: Add options QDict to bdrv_file_open() prototypes 2013-03-22 17:51:31 +01:00
qed.h block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
raw-aio.h block: make discard asynchronous 2013-01-15 10:03:47 +01:00
raw-posix.c raw-posix: Fix /dev/cdrom magic on OS X 2013-06-28 09:20:26 +02:00
raw-win32.c block: Remove filename parameter from .bdrv_file_open() 2013-04-22 11:34:35 +02:00
raw.c block: Add options QDict to .bdrv_open() 2013-03-15 16:07:49 +01:00
rbd.c rbd: Fix use after free in rbd_open() 2013-04-26 13:26:28 +02:00
sheepdog.c sheepdog: support 'qemu-img snapshot -a' 2013-06-17 17:47:58 +02:00
snapshot.c block: move snapshot code in block.c to block/snapshot.c 2013-06-04 13:56:30 +02:00
ssh.c block/ssh: Set bdrv_has_zero_init according to the file type. 2013-06-28 09:20:27 +02:00
stream.c block: Make BlockJobTypes const 2013-06-28 09:20:27 +02:00
vdi.c block: Add options QDict to .bdrv_open() 2013-03-15 16:07:49 +01:00
vhdx.c block: add read-only support to VHDX image format. 2013-05-03 10:31:58 +02:00
vhdx.h block: initial VHDX driver support framework - supports open and probe 2013-05-03 10:31:58 +02:00
vmdk.c vmdk: refuse to open higher version than supported 2013-06-24 10:25:43 +02:00
vpc.c block: Add options QDict to .bdrv_open() 2013-03-15 16:07:49 +01:00
vvfat.c block: Remove filename parameter from .bdrv_file_open() 2013-04-22 11:34:35 +02:00
win32-aio.c Remove twice include of qemu-common.h 2013-05-18 16:35:11 +04:00