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2016-02-23all: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-23osdep.h: Include config-target.h if NEED_CPU_H is definedPeter Maydell
NEED_CPU_H is the define we use to distinguish per-target object compilation from common object compilation. For the former, we must also include config-target.h so that the .c files see the necessary CONFIG_ constants. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-23scripts/clean-includes: Add --all optionPeter Maydell
Add a --all option which will run the script on every C source and header file in the repository (except for those in a few directories which contain standalone guest code). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-23scripts/clean-includes: Enhance to handle header filesPeter Maydell
Enhance clean-includes to handle header files as well as .c source files. For headers we merely remove all the redundant #include lines, including any includes of qemu/osdep.h itself. There is a simple mollyguard on the include file processing to skip a few key headers like osdep.h itself, to avoid producing bad patches if the script is run on every file in include/. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-23disas/arm-a64.cc: Include osdep.h firstPeter Maydell
Rearrange include directives so that we include osdep.h first. This has to be done manually because clean-includes doesn't handle C++. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-23osdep.h: Define macros for the benefit of C++ before C++11Peter Maydell
For C++ before C++11, <stdint.h> requires definition of the macros __STDC_CONSTANT_MACROS, __STDC_LIMIT_MACROS and __STDC_FORMAT_MACROS in order to enable definition of various macros by the header file. Define these in osdep.h, so that we get the right header file definitions whether osdep.h is being used by plain C, C++11 or older C++. In particular libvixl's header files depend on this and won't compile if osdep.h is included before them otherwise. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com>
2016-02-23cpu: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-23Merge remote-tracking branch 'remotes/kraxel/tags/pull-usb-20160223-1' into ↵Peter Maydell
staging usb: misc bugfixes. # gpg: Signature made Tue 23 Feb 2016 10:53:01 GMT using RSA key ID D3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" * remotes/kraxel/tags/pull-usb-20160223-1: ohci: allocate timer only once. usb: add pid check at the first of uhci_handle_td() usb: check RNDIS buffer offsets & length usb: check RNDIS message length tusb6010: move from hw/timer to hw/usb usb: check USB configuration descriptor object Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-23ohci: allocate timer only once.Gerd Hoffmann
Allocate timer once, at init time, instead of allocating/freeing it all the time when starting/stopping the bus. Simplifies the code, also fixes bugs (memory leak) due to missing checks whenever the time is already allocated or not. Cc: Prasad J Pandit <pjp@fedoraproject.org> Reported-by: Zuozhi Fzz <zuozhi.fzz@alibaba-inc.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-02-23usb: add pid check at the first of uhci_handle_td()Gonglei
pid can be gotten from uhci device memory in uhci_handle_td(), so the guest can trigger assert qemu if we get an invalid pid. And the uhci spec 2.1.2 tells us The Host Controller sets Host Controller Process Error bit to 1 when it detects a fatal error and indicates that the Host Controller suffered a consistency check failure while processing a Transfer Descriptor. An example of a consistency check failure would be finding an illegal PID field while processing the packet header portion of the TD. When this error occurs, the Host Controller clears the Run/Stop bit in the Command register to prevent further schedule execution. We'd better to set UHCI_STS_HCPERR and kick an interrupt, check the pid value at the first of uhci_handle_td function. https://bugzilla.redhat.com/show_bug.cgi?id=1070027 Signed-off-by: Gonglei <arei.gonglei@huawei.com> Message-id: 1455867238-4720-1-git-send-email-arei.gonglei@huawei.com [ applied minor codestyle fix ] Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-02-23usb: check RNDIS buffer offsets & lengthPrasad J Pandit
When processing remote NDIS control message packets, the USB Net device emulator uses a fixed length(4096) data buffer. The incoming informationBufferOffset & Length combination could overflow and cross that range. Check control message buffer offsets and length to avoid it. Reported-by: Qinghao Tang <luodalongde@gmail.com> Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> Message-id: 1455648821-17340-3-git-send-email-ppandit@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-02-23usb: check RNDIS message lengthPrasad J Pandit
When processing remote NDIS control message packets, the USB Net device emulator uses a fixed length(4096) data buffer. The incoming packet length could exceed this limit. Add a check to avoid it. Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> Message-id: 1455648821-17340-2-git-send-email-ppandit@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-02-23tusb6010: move from hw/timer to hw/usbPeter Maydell
The TUSB6010 is a USB controller (as the name suggests). Move it from hw/timer (where it was accidentally filed in 2013 when we moved everything out of hw/) to hw/usb. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1455883404-10976-1-git-send-email-peter.maydell@linaro.org Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-02-23usb: check USB configuration descriptor objectPrasad J Pandit
When processing remote NDIS control message packets, the USB Net device emulator checks to see if the USB configuration descriptor object is of RNDIS type(2). But it does not check if it is null, which leads to a null dereference error. Add check to avoid it. Reported-by: Qinghao Tang <luodalongde@gmail.com> Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> Message-id: 1455188480-14688-1-git-send-email-ppandit@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2016-02-22Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell
Block layer patches # gpg: Signature made Mon 22 Feb 2016 15:59:25 GMT using RSA key ID C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" * remotes/kevin/tags/for-upstream: (34 commits) qemu-iotests: 140: make description slightly more verbose qemu-iotests: 140: don't use IDE device qemu-iotests: 067: ignore QMP events blockdev: unset inappropriate flags when changing medium MAINTAINERS: Add myself as maintainer of the throttling code docs: Document the throttling infrastructure qapi: Correct the name of the iops_rd parameter qemu-iotests: Extend iotest 093 to test bursts throttle: Test throttle_compute_wait() during bursts throttle: Check that burst_level leaks correctly qapi: Add burst length fields to BlockDeviceInfo qapi: Add burst length parameters to block_set_io_throttle throttle: Add command-line settings to define the burst periods throttle: Add support for burst periods throttle: Use throttle_config_init() to initialize ThrottleConfig throttle: Merge all functions that check the configuration into one throttle: Set always an average value when setting a maximum value throttle: Make throttle_is_valid() set errp throttle: Make throttle_max_is_missing_limit() set errp throttle: Make throttle_conflicting() set errp ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-22Merge remote-tracking branch 'mreitz/tags/pull-block-for-kevin-2016-02-22' ↵Kevin Wolf
into queue-block Block patches of the last three weeks. # gpg: Signature made Mon Feb 22 16:55:33 2016 CET using RSA key ID E838ACAD # gpg: Good signature from "Max Reitz <mreitz@redhat.com>" * mreitz/tags/pull-block-for-kevin-2016-02-22: qemu-iotests: 140: make description slightly more verbose qemu-iotests: 140: don't use IDE device qemu-iotests: 067: ignore QMP events blockdev: unset inappropriate flags when changing medium Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qemu-iotests: 140: make description slightly more verboseSascha Silbe
Describe in a little more detail what the test is supposed to achieve. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Message-id: 1455827853-33477-3-git-send-email-silbe@linux.vnet.ibm.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-02-22qemu-iotests: 140: don't use IDE deviceSascha Silbe
IDE is only implemented by very few architectures (mostly PC). The test doesn't actually need a block device attached to the BlockBackend, so just drop it and adjust the reference output accordingly. Fixes: 16dee418 ("iotests: Add test for eject under NBD server") Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Message-id: 1455827853-33477-2-git-send-email-silbe@linux.vnet.ibm.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-02-22qemu-iotests: 067: ignore QMP eventsSascha Silbe
The relative ordering of "device_del" return value and the "DEVICE_DELETED" QMP event depends on the architecture being tested. On x86 unplugging virtio disks is asynchronous (=qdev_unplug()= → =hotplug_handler_unplug_request()=) while on s390x it is synchronous (=qdev_unplug()= → =hotplug_handler_unplug()=). This leads to the actual output on s390x consistently differing from the reference output (that was probably produced on x86). The easiest way to address this is to filter out QMP events in 067. The DEVICE_DELETED event is already getting explicitly tested by the Python-based test case 139, so the test coverage should be unaffected. Make use of the recently introduced _filter_qmp_events() to remove QMP events from the test case output and adjust the reference output accordingly. The tr / sed / tr trick used for filtering was suggested by Max Reitz <mreitz@redhat.com>. Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Message-id: 1455886869-139916-2-git-send-email-silbe@linux.vnet.ibm.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-02-22blockdev: unset inappropriate flags when changing mediumAlyssa Milburn
Most importantly, this removes BDRV_O_TEMPORARY, to avoid unlink()ing an image which replaces a snapshotted one. Signed-off-by: Alyssa Milburn <fuzzie@fuzzie.org> Message-id: 20160206133618.GA16635@li141-249.members.linode.com Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-02-22MAINTAINERS: Add myself as maintainer of the throttling codeAlberto Garcia
Signed-off-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22docs: Document the throttling infrastructureAlberto Garcia
Signed-off-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qapi: Correct the name of the iops_rd parameterAlberto Garcia
Signed-off-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qemu-iotests: Extend iotest 093 to test burstsAlberto Garcia
This patch adds a new test that checks that the burst settings ('iops_max', 'iops_max_length', etc.) of the throttling code work as expected. Signed-off-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22throttle: Test throttle_compute_wait() during burstsAlberto Garcia
This test simulates an I/O burst for more than two seconds and checks that it works as expected. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22throttle: Check that burst_level leaks correctlyAlberto Garcia
This patch expands test_leak_bucket() to check that burst_level leaks correctly. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qapi: Add burst length fields to BlockDeviceInfoAlberto Garcia
This patch adds the new bps_*_max_length and iops_*_max_length parameters to the BlockDeviceInfo struct. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qapi: Add burst length parameters to block_set_io_throttleAlberto Garcia
This patch adds the new bps_*_max_length and iops_*_max_length parameters to the block_set_io_throttle command. Signed-off-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22throttle: Add command-line settings to define the burst periodsAlberto Garcia
This patch adds all the throttling.*-max-length command-line parameters to define the length of the burst periods. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22throttle: Add support for burst periodsAlberto Garcia
This patch adds support for burst periods to the throttling code. With this feature the user can keep performing bursts as defined by the LeakyBucket.max rate for a configurable period of time. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22throttle: Use throttle_config_init() to initialize ThrottleConfigAlberto Garcia
We can currently initialize ThrottleConfig by zeroing all its fields, but this will change with the new fields to define the length of the burst periods. This patch introduces a new throttle_config_init() function and uses it to replace all memset() calls that initialize ThrottleConfig directly. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22throttle: Merge all functions that check the configuration into oneAlberto Garcia
There's no need to keep throttle_conflicting(), throttle_is_valid() and throttle_max_is_missing_limit() as separate functions, so this patch merges all three into one. As a consequence, check_throttle_config() becomes redundant and can be replaced with throttle_is_valid(). Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22throttle: Set always an average value when setting a maximum valueAlberto Garcia
When testing the ranges of valid values, set_cfg_value() creates sometimes invalid throttling configurations by setting bucket.max while leaving bucket.avg uninitialized. While this doesn't break the current tests, it will as soon as we unify all functions that check the validity of the throttling configuration. This patch ensures that the value of bucket.avg is valid when setting bucket.max. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22throttle: Make throttle_is_valid() set errpAlberto Garcia
The caller does not need to set it, and this will allow us to refactor this function later. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22throttle: Make throttle_max_is_missing_limit() set errpAlberto Garcia
The caller does not need to set it, and this will allow us to refactor this function later. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22throttle: Make throttle_conflicting() set errpAlberto Garcia
The caller does not need to set it, and this will allow us to refactor this function later. Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22throttle: Make throttle_compute_timer() staticAlberto Garcia
This function is only used internally in throttle.c Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22Merge remote-tracking branch 'remotes/kraxel/tags/pull-ui-20160222-1' into ↵Peter Maydell
staging gtk: fix uninitialized temporary VirtualConsole # gpg: Signature made Mon 22 Feb 2016 08:30:39 GMT using RSA key ID D3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" * remotes/kraxel/tags/pull-ui-20160222-1: gtk: fix uninitialized temporary VirtualConsole Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-02-22block migration: Activate image on destination before writing to itKevin Wolf
When using 'migrate -b', we must make sure to take ownership of the image before writing to it. Otherwise metadata would be thrown away on migration completion; this was caught by the assertions introduced in commit 09e0c771. Reported-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qemu-io: use no_argument/required_argument constantsDaniel P. Berrange
When declaring the 'struct option' array, use the standard constants no_argument/required_argument, instead of magic values 0 and 1. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qemu-nbd: use no_argument/required_argument constantsDaniel P. Berrange
When declaring the 'struct option' array, use the standard constants no_argument/required_argument, instead of magic values 0 and 1. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qemu-nbd: don't overlap long option values with short optionsDaniel P. Berrange
When defining values for long options, the normal practice is to start numbering from 256, to avoid overlap with the range of valid values for short options. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qemu-img: allow specifying image as a set of options argsDaniel P. Berrange
Currently qemu-img allows an image filename to be passed on the command line, but unless using the JSON format, it does not have a way to set any options except the format eg qemu-img info https://127.0.0.1/images/centos7.iso This adds a --image-opts arg that indicates that the positional filename should be interpreted as a full option string, not just a filename. qemu-img info --image-opts driver=https,url=https://127.0.0.1/images,sslverify=off This flag is mutually exclusive with the '-f' / '-F' flags. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qemu-nbd: allow specifying image as a set of options argsDaniel P. Berrange
Currently qemu-nbd allows an image filename to be passed on the command line, but unless using the JSON format, it does not have a way to set any options except the format eg qemu-nbd https://127.0.0.1/images/centos7.iso qemu-nbd /home/berrange/demo.qcow2 This adds a --image-opts arg that indicates that the positional filename should be interpreted as a full option string, not just a filename. qemu-nbd --image-opts driver=https,url=https://127.0.0.1/images,sslverify=off qemu-nbd --image-opts driver=file,filename=/home/berrange/demo.qcow2 This flag is mutually exclusive with the '-f' flag. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qemu-io: allow specifying image as a set of options argsDaniel P. Berrange
Currently qemu-io allows an image filename to be passed on the command line, but unless using the JSON format, it does not have a way to set any options except the format eg qemu-io https://127.0.0.1/images/centos7.iso qemu-io /home/berrange/demo.qcow2 By contrast when using the interactive shell, it is possible to use --option with the 'open' command, or to omit the filename. This adds a --image-opts arg that indicates that the positional filename should be interpreted as a full option string, not just a filename. qemu-io --image-opts driver=https,url=https://127.0.0.1/images,sslverify=off qemu-io --image-opts driver=qcow2,file.filename=/home/berrange/demo.qcow2 This flag is mutually exclusive with the '-f' flag and with the '-o' flag to the 'open' command Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qemu-img: add support for --object command line argDaniel P. Berrange
Allow creation of user creatable object types with qemu-img via a new --object command line arg. This will be used to supply passwords and/or encryption keys to the various block driver backends via the recently added 'secret' object type. # printf letmein > mypasswd.txt # qemu-img info --object secret,id=sec0,file=mypasswd.txt \ ...other info args... Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22qemu-io: add support for --object command line argDaniel P. Berrange
Allow creation of user creatable object types with qemu-io via a new --object command line arg. This will be used to supply passwords and/or encryption keys to the various block driver backends via the recently added 'secret' object type. # printf letmein > mypasswd.txt # qemu-io --object secret,id=sec0,file=mypasswd.txt \ ...other args... Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22block: Fix -incoming with snapshot=onKevin Wolf
The BDRV_O_INACTIVE flag should only be set for images explicitly opened by the user. snapshot=on needs to create a new qcow2 image and write some metadata to it. This is not a problem because it can't come from the source, so there's no reason to mark it as BDRV_O_INACTIVE, even though it is opened while waiting for the migration to complete. This fixes an assertion failure when -incoming and snapshot=on are combined. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22spec: add qcow2 bitmaps extension specificationVladimir Sementsov-Ogievskiy
The new feature for qcow2: storing bitmaps. This patch adds new header extension to qcow2 - Bitmaps Extension. It provides an ability to store virtual disk related bitmaps in a qcow2 image. For now there is only one type of such bitmaps: Dirty Tracking Bitmap, which just tracks virtual disk changes from some moment. Note: Only bitmaps, relative to the virtual disk, stored in qcow2 file, should be stored in this qcow2 file. The size of each bitmap (considering its granularity) is equal to virtual disk size. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2016-02-22quorum: fix segfault when read fails in fifo modeChanglong Xie
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Changlong Xie <xiecl.fnst@cn.fujitsu.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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