- 17 12月, 2010 3 次提交
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由 Stefan Hajnoczi 提交于
This patch introduces the qed on-disk layout and implements image creation. Later patches add read/write and other functionality. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Christoph Hellwig 提交于
Add support to discard blocks in a raw image residing on an XFS filesystem by calling the XFS_IOC_UNRESVSP64 ioctl to punch holes. Support for other hole punching mechanisms can be added when they become available. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Christoph Hellwig 提交于
Add a new bdrv_discard method to free blocks in a mapping image, and a new drive property to set the granularity for these discard. If no discard granularity support is set discard support is disabled. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 14 12月, 2010 1 次提交
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由 Christian Brunner 提交于
RBD is an block driver for the distributed file system Ceph (http://ceph.newdream.net/). This driver uses librados (which is part of the Ceph server) for direct access to the Ceph object store and is running entirely in userspace (Yehuda also wrote a driver for the linux kernel, that can be used to access rbd volumes as a block device). Signed-off-by: NYehuda Sadeh <yehuda@hq.newdream.net> Signed-off-by: NChristian Brunner <chb@muc.de> Reviewed-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 27 11月, 2010 1 次提交
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由 Christoph Hellwig 提交于
Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 25 11月, 2010 1 次提交
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由 Kevin Wolf 提交于
All drivers use bs->file instead of s->hd for quite a while now, so it's time to remove s->hd. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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- 07 11月, 2010 1 次提交
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由 Blue Swirl 提交于
Fix a return value change missed by 205ef796. Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 04 11月, 2010 4 次提交
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由 Blue Swirl 提交于
When building on a 64 bit host which uses 'long' for int64_t, GCC emits a warning: CC block/blkverify.o /src/qemu/block/blkverify.c: In function `blkverify_verify_readv': /src/qemu/block/blkverify.c:304: warning: long long int format, long unsigned int arg (arg 3) Rework a77cffe7 to avoid the warning. Signed-off-by: NBlue Swirl <blauwirbel@gmail.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
The cache content may be destroyed after a failed read, better not use it any more. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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由 Kevin Wolf 提交于
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
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: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
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- 23 10月, 2010 1 次提交
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由 Blue Swirl 提交于
Move timer init functions to a new file, qemu-timer-common.c. Make other critical timer functions inlined to preserve performance in qemu-timer.c, also move muldiv64() (used by the inline functions) to qemu-timer.h. Adjust block/raw-posix.c and simpletrace.c to use get_clock() directly. Remove a similar/duplicate definition in qemu-tool.c. Adjust hw/omap_clk.c to include qemu-timer.h because muldiv64() is used there. After this change, tracing can be used also for user code and simpletrace on Win32. Cc: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Acked-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 22 10月, 2010 5 次提交
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由 Stefan Weil 提交于
Adding the gcc format attribute detects a format bug which is fixed here. v2: Don't use type cast. BDRV_SECTOR_SIZE is unsigned long long, so %lld should be the correct format specifier. Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Kevin Wolf <kwolf@redhat.com> Signed-off-by: NStefan Weil <weil@mail.berlios.de> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 edison 提交于
In order to backup snapshots, created from QCOW2 iamge, we want to copy snapshots out of QCOW2 disk to a seperate storage. The following patch adds a new option in "qemu-img": qemu-img convert -f qcow2 -O qcow2 -s snapshot_name src_img bck_img. Right now, it only supports to copy the full snapshot, delta snapshot is on the way. Changes from V1: all the comments from Kevin are addressed: Add read-only checking Fix coding style Change the name from bdrv_snapshot_load to bdrv_snapshot_load_tmp Signed-off-by: NDisheng Su <edison@cloud.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
They have been #ifdef'd out by the previous patch. Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
Instead of doing lots of magic for setting up initial refcount blocks and stuff create a minimal (inconsistent) image, open it and initialize the rest with regular qcow2 functions. This is a complete rewrite of the image creation function. The old implementating is #ifdef'd out and will be removed by the next patch (removing it here would have made the diff unreadable because diff tries to find similarities when it's really a rewrite) Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Stefan Hajnoczi 提交于
The L1 table grow operation includes a size calculation that bumps up the new L1 table size in order to anticipate the size needs of vmstate data. This helps reduce the number of times that the L1 table has to be grown when vmstate data is appended. This size overhead is not necessary during image creation, bdrv_truncate(), or snapshot goto operations. In fact, existing qemu-iotests that exercise table growth are no longer able to trigger it because image creation preallocates an L1 table that is too large after changes to qcow_create2(). This patch keeps the size calculation but also adds exact growth for callers that do not want to inflate the L1 table size unnecessarily. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 14 10月, 2010 1 次提交
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由 Blue Swirl 提交于
Compiling with GCC 4.6.0 20100925 produced a warning: /src/qemu/block/qcow2-refcount.c: In function 'update_refcount': /src/qemu/block/qcow2-refcount.c:552:13: error: variable 'dummy' set but not used [-Werror=unused-but-set-variable] Fix by adding a dummy cast so that the result is not unused. Acked-by: NKevin Wolf <kwolf@redhat.com> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 03 10月, 2010 1 次提交
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由 Stefan Weil 提交于
Fix this compiler warning: ./block/vvfat.c:2285: error: comparison of unsigned expression >= 0 is always true Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Kevin Wolf <kwolf@redhat.com> Signed-off-by: NStefan Weil <weil@mail.berlios.de> Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 23 9月, 2010 1 次提交
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由 Anthony Liguori 提交于
Reported-by: NPeter Lemenkov <lemenkov@gmail.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 21 9月, 2010 12 次提交
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由 Stefan Hajnoczi 提交于
The blkverify block driver makes investigating image format data corruption much easier. A raw image initialized with the same contents as the test image (e.g. qcow2 file) must be provided. The raw image mirrors read/write operations and is used to verify that data read from the test image is correct. See docs/blkverify.txt for more information. Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
qcow2 used to use bounce buffers for any AIO requests. This does not only imply unnecessary copying, but also unbounded allocations which should be avoided. This patch removes bounce buffers from the normal AIO write path. Encrypted images continue to use a bounce buffer, however with constant size. Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
qcow2 used to use bounce buffers for any AIO requests. This does not only imply unnecessary copying, but also unbounded allocations which should be avoided. This patch removes bounce buffers from the normal AIO read path, and constrains them to a constant size for encrypted images. Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
We always have a sync for the refcount update when a new cluster is allocated. If we move this past the COW, we can save an additional sync. Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
Note that the flush is omitted intentionally in qcow2_free_clusters. If anything, we can leak clusters here if we lose the writes. Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Laurent Vivier 提交于
block/nbd.c: use default port number when none is specified qemu-nbd.c: use IANA-assigned port number: 10809 Signed-off-by: NLaurent Vivier <laurent@vivier.eu> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Christoph Hellwig 提交于
Replace the hardcoded handling of 512 byte alignment with bs->buffer_alignment to handle larger sector size devices correctly. Note that we can not rely on it to be initialize in bdrv_open, so deal with the worst case there. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
The qcow file used for write support in vvfat is a temporary file, so we can use cache=unsafe there. Without this, write support is just too slow to be of any use. Signed-off-by: NKevin Wolf <mail@kevin-wolf.de>
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由 Kevin Wolf 提交于
Allocation and deallocation of bs->opaque is not in the control of a block driver. Therefore it should not set bs->opaque to a data structure used by another bs, or closing the image will lead to a double free. Signed-off-by: NKevin Wolf <mail@kevin-wolf.de>
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由 Kevin Wolf 提交于
vvfat tries to set the readonly flag in its open function, but nowadays this is overwritted with the readonly=... command line option. Check in bdrv_write if the vvfat was opened read-only and return an error in this case. Without this check, vvfat tries to access the qcow bs, which is NULL without enabled write support. Signed-off-by: NKevin Wolf <mail@kevin-wolf.de>
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- 18 9月, 2010 1 次提交
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由 Blue Swirl 提交于
The signedness of enum types depend on the compiler implementation. Therefore the check for negative values may or may not be meaningful. Fix by explicitly casting to a signed integer. Since the values are also checked earlier against event_names table, this is an internal error. Change the 'if' to 'assert'. This also avoids a warning with GCC flag -Wtype-limits. Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>
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- 09 9月, 2010 1 次提交
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由 Anthony Liguori 提交于
This reverts commit 79368c81. Conflicts: block.c I haven't been able to come up with a solution yet for the corruption caused by unaligned requests from the IDE disk so revert until a solution can be written. Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 08 9月, 2010 3 次提交
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由 Kevin Wolf 提交于
When a new cluster was allocated, we only need a flush after the write to the L2 table if it was a COW and we need to decrease the refcounts of the old clusters. Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Bernhard Kohl 提交于
Allow symbolic links which point to /dev/sgX devices. Signed-off-by: NBernhard Kohl <bernhard.kohl@nsn.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Kevin Wolf 提交于
On Linux, we have code to detect CD-ROMs using an ioctl. We shouldn't lose anything but false positives by removing the check for a /dev/cd* path. Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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- 31 8月, 2010 3 次提交
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由 Laurent Vivier 提交于
This patch allows to connect Qemu using NBD protocol to an nbd-server using named exports. For instance, if on the host "isoserver", in /etc/nbd-server/config, you have: [generic] [debian-500-ppc-netinst] exportname = /ISO/debian-500-powerpc-netinst.iso [Fedora-10-ppc-netinst] exportname = /ISO/Fedora-10-ppc-netinst.iso You can connect to it, using: qemu -cdrom nbd:isoserver:exportname=debian-500-ppc-netinst qemu -cdrom nbd:isoserver:exportname=Fedora-10-ppc-netinst NOTE: you need at least nbd-server 2.9.18 Signed-off-by: NLaurent Vivier <laurent@vivier.eu> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Loïc Minier 提交于
Signed-off-by: NLoïc Minier <loic.minier@linaro.org> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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由 Izumi Tsutsui 提交于
"qemu_socket.h" includes all necessary files and including <netinet/tcp.h> without <netinet/in.h> could cause errors on some systems. Signed-off-by: NIzumi Tsutsui <tsutsui@ceres.dti.ne.jp> Signed-off-by: NKevin Wolf <kwolf@redhat.com>
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