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block: Rename bdrv_co_flush to bdrv_co_flush_to_disk
There are two different types of flush that you can do: Flushing one level upto the OS (i.e. writing data to the host page cache) or flushing it all the waydown to the disk. The existing functions flush to the disk, reflect this in the...
block: change flush to co_flush
Since coroutine operation is now mandatory, convert all bdrv_flushimplementations to coroutines. For qcow2, this means taking the lock.Other implementations are simpler and just forward bdrv_flush to theunderlying protocol, so they can avoid the lock....
w32: Fix qemu_ftruncate64
SetFilePointer returns INVALID_SET_FILE_POINTER when it fails.In addition, GetLastError must be checked.
The first call of SetFilePointer did not use INVALID_SET_FILE_POINTER,the second call used wrong error handling.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>...
block/raw-win32: Drop disabled code for removable host devices
It's been disabled since the start (commit 19cb3738, Aug 2006), andhas been untouched except for spelling fixes and such. I don't feellike dragging it along any further.
Signed-off-by: Markus Armbruster <armbru@redhat.com>...
block: add bdrv_get_allocated_file_size() operation
qemu-img.c wants to count allocated file size of image. Previously itcounts a single bs->file by 'stat' or Window API. As VMDK introducesmultiple file support, the operation becomes format specific with...
block: clarify the meaning of BDRV_O_NOCACHE
Change BDRV_O_NOCACHE to only imply bypassing the host OS file cache,but no writeback semantics. All existing callers are changed to alsospecify BDRV_O_CACHE_WB to give them writeback semantics.
Signed-off-by: Christoph Hellwig <hch@lst.de>...
raw-win32: Fix bdrv_flush return value
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Fix win32 build
Fix a return value change missed by205ef7961f781496366e0a93a4ec621ad3724bd7.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
block: Allow bdrv_flush to return errors
This changes bdrv_flush to return 0 on success and -errno in case of failure.It's a requirement for implementing proper error handle in users of bdrv_flush.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
block: Fix bdrv_has_zero_init
Assuming that any image on a block device is not properly zero-initialized isactually wrong: Only raw images have this problem. Any other image formatshouldn't care about it, they initialize everything properly themselves....
block: separate raw images from the file protocol
We're running into various problems because the "raw" file access, whichis used internally by the various image formats is entangled with the"raw" image format, which maps the VM view 1:1 to a file system....
block: Open the underlying image file in generic code
Format drivers shouldn't need to bother with things like file names, but ratherjust get an open BlockDriverState for the underlying protocol. This patchintroduces this behaviour for bdrv_open implementation. For protocols which...
block: kill BDRV_O_CREAT
The BDRV_O_CREAT option is unused inside qemu and partially duplicatesthe bdrv_create method. Remove it, and the -C option to qemu-io whichisn't used in qemu-iotests anyway.
Signed-off-by: Christoph Hellwig <hch@lst.de>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Clean-up a little bit the RW related bits of BDRV_O_FLAGS. BDRV_O_RDONLY gone (and so is BDRV_O_ACCESS). Default value for bdrv_flags (0/zero) is READ-ONLY. Need to explicitly request READ-WRITE.
Instead of using the field 'readonly' of the BlockDriverState struct for passing the request,...
block: add bdrv_probe_device method
Add a bdrv_probe_device method to all BlockDriver instances implementinghost devices to move matching of host device types into the actual drivers.For now we keep exacly the old matching behaviour based on the devices names,...
qemu-img: Print available options with -o ?
This patch adds a small help text to each of the options in the block driverswhich can be displayed by using qemu-img create -f fmt -o ?
Convert all block drivers to new bdrv_create
Now we can make use of the newly introduced option structures. Instead ofhaving bdrv_create carry more and more parameters (which are format specific inmost cases), just pass a option structure as defined by the driver itself....
Fix warning on WIN32
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Move block drivers into their own directory