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* coroutine: move into libqemuutil.a libraryDaniel P. Berrange2015-10-203-3/+3
| | | | | | | | | | | | | | | | | The coroutine files are currently referenced by the block-obj-y variable. The coroutine functionality though is already used by more than just the block code. eg migration code uses coroutine yield. In the future the I/O channel code will also use the coroutine yield functionality. Since the coroutine code is nicely self-contained it can be easily built as part of the libqemuutil.a library, making it widely available. The headers are also moved into include/qemu, instead of the include/block directory, since they are now part of the util codebase, and the impl was never in the block/ directory either. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
* blkdebug: Don't confuse image as backing fileFam Zheng2015-10-161-1/+1
| | | | | | | | | | | The word "backing file" nowadays refers to the backing_hd in the external snapshot sense (i.e. bs->backing_hd), instead of the file sense (bs->file). Correct the comment to use the right term. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qcow2: Remove forward declaration of QCowAIOCBKevin Wolf2015-10-161-2/+0
| | | | | | | | This struct doesn't exist any more since commit 3fc48d09 in August 2011, it's about time to remove its forward declaration. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* raw-posix: warn about BDRV_O_NATIVE_AIO if libaio is unavailableStefan Hajnoczi2015-10-161-1/+10
| | | | | | | | | | | | | | raw-posix.c silently ignores BDRV_O_NATIVE_AIO if libaio is unavailable. It is confusing when aio=native performance is identical to aio=threads because the binary was accidentally built without libaio. Print a deprecation warning if -drive aio=native is used with a binary that does not support libaio. There are probably users using aio=native who would be inconvenienced if QEMU suddenly refused to start their guests. In the future this will become an error. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* blkverify: Fix BDS leak in .bdrv_open error pathKevin Wolf2015-10-161-0/+3
| | | | | Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com>
* block: Remove bdrv_swap()Kevin Wolf2015-10-162-14/+0
| | | | | | | | | | | | bdrv_swap() is unused now. Remove it and all functions that have no other users than bdrv_swap(). In particular, this removes the .bdrv_rebind callbacks from block drivers. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: Add and use bdrv_replace_in_backing_chain()Kevin Wolf2015-10-161-16/+7
| | | | | | | | | | | | | | | | | This cleans up the mess we left behind in the mirror code after the previous patch. Instead of using bdrv_swap(), just change pointers. The interface change of the mirror job that callers must consider is that after job completion, their local BDS pointers still point to the same node now. qemu-img must change its code accordingly (which makes it easier to understand); the other callers stays unchanged because after completion they don't do anything with the BDS, but just with the job, and the job is still owned by the source BDS. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* blockjob: Store device name at job creationKevin Wolf2015-10-161-2/+1
| | | | | | | | | | | | | | | | | | | | | | Some block jobs change the block device graph on completion. This means that the device that owns the job and originally was addressed with its device name may no longer be what the corresponding BlockBackend points to. Previously, the effects of bdrv_swap() ensured that the job was (at least partially) transferred to the target image. Events that contain the device name could still use bdrv_get_device_name(job->bs) and get the same result. After removing bdrv_swap(), this won't work any more. Instead, save the device name at job creation and use that copy for QMP events and anything else identifying the job. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* block-backend: Add blk_set_bs()Kevin Wolf2015-10-161-0/+17
| | | | | | | | | | It allows changing the BlockDriverState that a BlockBackend points to. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* block/io: Make bdrv_requests_pending() publicKevin Wolf2015-10-161-1/+1
| | | | | | | | Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: Manage backing file references in bdrv_set_backing_hd()Kevin Wolf2015-10-163-34/+18
| | | | | | | | | | | | | | | This simplifies the code somewhat, especially when dropping whole backing file subchains. The exception is the mirroring code that does adventurous things with bdrv_swap() and in order to keep it working, I had to duplicate most of bdrv_set_backing_hd() locally. We'll get rid again of this ugliness shortly. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: Convert bs->backing_hd to BdrvChildKevin Wolf2015-10-1610-49/+50
| | | | | | | | | | | | | | | This is the final step in converting all of the BlockDriverState pointers that block drivers use to BdrvChild. After this patch, bs->children contains the full list of child nodes that are referenced by a given BDS, and these children are only referenced through BdrvChild, so that updating the pointer in there is enough for changing edges in the graph. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: Convert bs->file to BdrvChildKevin Wolf2015-10-1623-308/+340
| | | | | | | | | | | This patch removes the temporary duplication between bs->file and bs->file_child by converting everything to BdrvChild. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* quorum: Convert to BdrvChildKevin Wolf2015-10-161-31/+34
| | | | | | | | | Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* blkverify: Convert s->test_file to BdrvChildKevin Wolf2015-10-161-20/+21
| | | | | | | | | Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* vmdk: Use BdrvChild instead of BDS for references to extentsKevin Wolf2015-10-161-48/+51
| | | | | | | | | Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: switch from g_slice allocator to mallocPaolo Bonzini2015-10-124-10/+10
| | | | | | | | Simplify memory allocation by sticking with a single API. GSlice is not that fast anyway (tcmalloc/jemalloc are better). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* block/ssh: remove dead codePaolo Bonzini2015-10-081-4/+1
| | | | | | | | | | The "err" label cannot be reached with qp != NULL. Remove the free-ing of qp and avoid future regressions by removing the initializer. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> ACKed-by: Richard W.M. Jones <rjones@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* block/raw-posix: Open file descriptor O_RDWR to work around glibc ↵Richard W.M. Jones2015-10-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | posix_fallocate emulation issue. https://bugzilla.redhat.com/show_bug.cgi?id=1265196 The following command fails on an NFS mountpoint: $ qemu-img create -f qcow2 -o preallocation=falloc disk.img 262144 Formatting 'disk.img', fmt=qcow2 size=262144 encryption=off cluster_size=65536 preallocation='falloc' lazy_refcounts=off qemu-img: disk.img: Could not preallocate data for the new file: Bad file descriptor The reason turns out to be because NFS doesn't support the posix_fallocate call. glibc emulates it instead. However glibc's emulation involves using the pread(2) syscall. The pread syscall fails with EBADF if the file descriptor is opened without the read open-flag (ie. open (..., O_WRONLY)). I contacted glibc upstream about this, and their response is here: https://bugzilla.redhat.com/show_bug.cgi?id=1265196#c9 There are two possible fixes: Use Linux fallocate directly, or (this fix) work around the problem in qemu by opening the file with O_RDWR instead of O_WRONLY. Signed-off-by: Richard W.M. Jones <rjones@redhat.com> BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1265196 Reviewed-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* raw-win32: Fix write request error handlingKevin Wolf2015-10-021-2/+2
| | | | | | | | aio_worker() wrote the return code to the wrong variable. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Tested-by: Guangmu Zhu <guangmuzhu@gmail.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* block: mirror - fix full sync mode when target does not support zero initJeff Cody2015-10-011-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | During mirror, if the target device does not support zero init, a mirror may result in a corrupted image for sync="full" mode. This is due to how the initial dirty bitmap is set up prior to copying data - we did not mark sectors as dirty that are unallocated. This means those unallocated sectors are skipped over on the target, and for a device without zero init, invalid data may reside in those holes. If both of the following conditions are true, then we will explicitly mark all sectors as dirty: 1.) sync = "full" 2.) bdrv_has_zero_init(target) == false If the target does support zero init, but a target image is passed in with data already present (i.e. an "existing" image), it is assumed the data present in the existing image is valid data for those sectors. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 91ed4bc5bda7e2b09eb508b07c83f4071fe0b3c9.1443705220.git.jcody@redhat.com Signed-off-by: Jeff Cody <jcody@redhat.com>
* Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell2015-09-251-34/+37
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * First batch of MAINTAINERS updates * IOAPIC fixes (to pass kvm-unit-tests with -machine kernel_irqchip=off) * NBD API upgrades from Daniel * strtosz fixes from Marc-André * improved support for readonly=on on scsi-generic devices * new "info ioapic" and "info lapic" monitor commands * Peter Crosthwaite's ELF_MACHINE cleanups * docs patches from Thomas and Daniel # gpg: Signature made Fri 25 Sep 2015 11:20:52 BST using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" * remotes/bonzini/tags/for-upstream: (52 commits) doc: Refresh URLs in the qemu-tech documentation docs: describe the QEMU build system structure / design typedef: add typedef for QemuOpts i386: interrupt poll processing i386: partial revert of interrupt poll fix ppc: Rename ELF_MACHINE to be PPC specific i386: Rename ELF_MACHINE to be x86 specific alpha: Remove ELF_MACHINE from cpu.h mips: Remove ELF_MACHINE from cpu.h sparc: Remove ELF_MACHINE from cpu.h s390: Remove ELF_MACHINE from cpu.h sh4: Remove ELF_MACHINE from cpu.h xtensa: Remove ELF_MACHINE from cpu.h tricore: Remove ELF_MACHINE from cpu.h or32: Remove ELF_MACHINE from cpu.h lm32: Remove ELF_MACHINE from cpu.h unicore: Remove ELF_MACHINE from cpu.h moxie: Remove ELF_MACHINE from cpu.h cris: Remove ELF_MACHINE from cpu.h m68k: Remove ELF_MACHINE from cpu.h ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * nbd: convert to use the QAPI SocketAddress objectDaniel P. Berrange2015-09-251-34/+37
| | | | | | | | | | | | | | | | | | | | The nbd block driver currently uses a QemuOpts object when setting up sockets. Switch it over to use the QAPI SocketAddress object instead. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1442411543-28513-2-git-send-email-berrange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* | sheepdog: refine discard supportHitoshi Mitake2015-09-251-9/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch refines discard support of the sheepdog driver. The existing discard mechanism was implemented on SD_OP_DISCARD_OBJ, which was introduced before fine grained reference counting on newer sheepdog. It doesn't care about relations of snapshots and clones and discards objects unconditionally. With this patch, the driver just updates an inode object for updating reference. Removing the object is done in sheep process side. Cc: Teruaki Ishizaki <ishizaki.teruaki@lab.ntt.co.jp> Cc: Vasiliy Tolstov <v.tolstov@selfip.ru> Cc: Jeff Cody <jcody@redhat.com> Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp> Tested-by: Vasiliy Tolstov <v.tolstov@selfip.ru> Message-id: 1441076590-8015-3-git-send-email-mitake.hitoshi@lab.ntt.co.jp Signed-off-by: Jeff Cody <jcody@redhat.com>
* | sheepdog: use per AIOCB dirty indexes for non overlapping requestsHitoshi Mitake2015-09-251-28/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the commit 96b14ff85acf, requests for overlapping areas are serialized. However, it cannot handle a case of non overlapping requests. In such a case, min_dirty_data_idx and max_dirty_data_idx can be overwritten by the requests and invalid inode update can happen e.g. a case like create(1, 2) and create(3, 4) are issued in parallel. This patch lets SheepdogAIOCB have dirty data indexes instead of BDRVSheepdogState for avoiding the above situation. This patch also does trivial renaming for better description: overwrapping -> overlapping Cc: Teruaki Ishizaki <ishizaki.teruaki@lab.ntt.co.jp> Cc: Vasiliy Tolstov <v.tolstov@selfip.ru> Cc: Jeff Cody <jcody@redhat.com> Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp> Tested-by: Vasiliy Tolstov <v.tolstov@selfip.ru> Message-id: 1441076590-8015-2-git-send-email-mitake.hitoshi@lab.ntt.co.jp Signed-off-by: Jeff Cody <jcody@redhat.com>
* | Backup: don't do copy-on-read in before_write_notifierWen Congyang2015-09-251-6/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We will copy data in before_write_notifier to do backup. It is a nested I/O request, so we cannot do copy-on-read. The steps to reproduce it: 1. -drive copy-on-read=on,... // qemu option 2. drive_backup -f disk0 /path_to_backup.img // monitor command Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Tested-by: Jeff Cody <jcody@redhat.com> Message-id: 1441682913-14320-3-git-send-email-wency@cn.fujitsu.com Signed-off-by: Jeff Cody <jcody@redhat.com>
* | block: Introduce a new API bdrv_co_no_copy_on_readv()Wen Congyang2015-09-251-1/+11
| | | | | | | | | | | | | | | | | | In some cases, we need to disable copy-on-read, and just read the data. Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Message-id: 1441682913-14320-2-git-send-email-wency@cn.fujitsu.com Signed-off-by: Jeff Cody <jcody@redhat.com>
* | sheepdog: add reopen supportLiu Yuan2015-09-251-0/+76
| | | | | | | | | | | | | | | | | | | | | | | | | | With reopen supported, block-commit (and offline commit) is now supported for image files whose base image uses the Sheepdog protocol driver. Cc: qemu-devel@nongnu.org Cc: Jeff Cody <jcody@redhat.com> Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Liu Yuan <liuyuan@cmss.chinamobile.com> Message-id: 1440730438-24676-1-git-send-email-namei.unix@gmail.com Signed-off-by: Jeff Cody <jcody@redhat.com>
* | block/nfs: cache allocated filesize for read-only filesPeter Lieven2015-09-251-0/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the file is readonly its not expected to grow so save the blocking call to nfs_fstat_async and use the value saved at connection time. Also important the monitor (and thus the main loop) will not hang if block device info is queried and the NFS share is unresponsive. Signed-off-by: Peter Lieven <pl@kamp.de> Reviewed-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-id: 1440671441-7978-1-git-send-email-pl@kamp.de Signed-off-by: Jeff Cody <jcody@redhat.com>
* | block/nfs: fix calculation of allocated file sizePeter Lieven2015-09-251-1/+1
|/ | | | | | | | | | | | st.st_blocks is always counted in 512 byte units. Do not use st.st_blksize as multiplicator which may be larger. Cc: qemu-stable@nongnu.org Signed-off-by: Peter Lieven <pl@kamp.de> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Message-id: 1440067607-14547-1-git-send-email-pl@kamp.de Signed-off-by: Jeff Cody <jcody@redhat.com>
* Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell2015-09-1417-289/+455
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Block layer patches (v2) # gpg: Signature made Mon 14 Sep 2015 15:56:54 BST using RSA key ID C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" * remotes/kevin/tags/for-upstream: (23 commits) qcow2: Make qcow2_alloc_bytes() more explicit vmdk: Fix next_cluster_sector for compressed write iotests: Add test for checking large image files qcow2: Make size_to_clusters() return uint64_t qemu-iotests: More qcow2 reopen tests qemu-iotests: Reopen qcow2 with lazy-refcounts change qcow2: Support updating driver-specific options in reopen qcow2: Make qcow2_update_options() suitable for transactions qcow2: Fix memory leak in qcow2_update_options() error path qcow2: Leave s unchanged on qcow2_update_options() failure qcow2: Move rest of option handling to qcow2_update_options() qcow2: Move qcow2_update_options() call up qcow2: Factor out qcow2_update_options() qcow2: Improve error message qemu-io: Add command 'reopen' qemu-io: Remove duplicate 'open' error message block: Allow specifying driver-specific options to reopen qcow2: Rename BDRVQcowState to BDRVQcow2State block: Drop bdrv_find_whitelisted_format() block: Drop drv parameter from bdrv_fill_options() ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * qcow2: Make qcow2_alloc_bytes() more explicitMax Reitz2015-09-141-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case of -EAGAIN returned by update_refcount(), we should discard the cluster offset we were trying to allocate and request a new one, because in theory that old offset might now be taken by a refcount block. In practice, this was not the case due to update_refcount() generally returning strictly monotonic increasing cluster offsets. However, this behavior is not set in stone, and it is also not obvious when looking at qcow2_alloc_bytes() alone, so we should not rely on it. Reported-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| * vmdk: Fix next_cluster_sector for compressed writeRadoslav Gerganov2015-09-141-2/+6
| | | | | | | | | | | | | | | | | | | | | | When the VMDK is streamOptimized (or compressed), the next_cluster_sector must not be incremented by a fixed number of sectors. Instead of this, it must be rounded up to the next consecutive sector. Fixing this results in much smaller compressed images. Signed-off-by: Radoslav Gerganov <rgerganov@vmware.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| * qcow2: Make size_to_clusters() return uint64_tMax Reitz2015-09-143-17/+29
| | | | | | | | | | | | | | | | | | | | | | | | Sadly, some images may have more clusters than what can be represented using a plain int. We should be prepared for that case (in qcow2_check_refcounts() we actually were trying to catch that case, but since size_to_clusters() truncated the returned value, that check never did anything useful). Cc: qemu-stable <qemu-stable@nongnu.org> Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| * qcow2: Support updating driver-specific options in reopenKevin Wolf2015-09-141-9/+72
| | | | | | | | | | | | | | | | | | | | | | | | | | For updating the cache sizes, disabling lazy refcounts and updating the clean_cache_timer there is a bit more to do than just changing the variables, but otherwise we're all set for changing options during bdrv_reopen(). Just implement the missing pieces and hook the functions up in bdrv_reopen(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
| * qcow2: Make qcow2_update_options() suitable for transactionsKevin Wolf2015-09-141-40/+73
| | | | | | | | | | | | | | | | Before we can allow updating options at runtime with bdrv_reopen(), we need to split the function into prepare/commit/abort parts. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
| * qcow2: Fix memory leak in qcow2_update_options() error pathKevin Wolf2015-09-141-2/+10
| | | | | | | | | | | | Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
| * qcow2: Leave s unchanged on qcow2_update_options() failureKevin Wolf2015-09-141-22/+35
| | | | | | | | | | | | | | | | On return, either all new options should be applied to BDRVQcowState (on success), or all of the old settings should be preserved (on failure). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
| * qcow2: Move rest of option handling to qcow2_update_options()Kevin Wolf2015-09-141-66/+68
| | | | | | | | | | | | | | | | With this commit, the handling of driver-specific options in qcow2_open() is completely separated out into qcow2_update_options(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
| * qcow2: Move qcow2_update_options() call upKevin Wolf2015-09-141-9/+9
| | | | | | | | | | | | | | | | | | | | | | qcow2_update_options() only updates some variables in BDRVQcowState and doesn't really depend on other parts of it being initialised yet, so it can be moved so that it immediately follows the other half of option handling code in qcow2_open(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
| * qcow2: Factor out qcow2_update_options()Kevin Wolf2015-09-141-59/+76
| | | | | | | | | | | | | | | | | | | | Eventually we want to be able to change options at runtime. As a first step towards that goal, separate some option handling code from the general initialisation code in qcow2_open(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
| * qcow2: Improve error messageKevin Wolf2015-09-141-1/+1
| | | | | | | | | | | | | | | | | | Eric says that "any" sounds better than "either", and my non-native feeling says the same, so let's change it. Suggested-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
| * block: Allow specifying driver-specific options to reopenKevin Wolf2015-09-141-2/+2
| | | | | | | | | | Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
| * qcow2: Rename BDRVQcowState to BDRVQcow2StateKevin Wolf2015-09-146-120/+120
| | | | | | | | | | | | | | | | | | | | BDRVQcowState is already used by qcow1, and gdb is always confused which one to use. Rename the qcow2 one so they can be distinguished. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com>
| * block: Drop drv parameter from bdrv_open()Max Reitz2015-09-1411-18/+16
| | | | | | | | | | | | | | | | | | Now that this parameter is effectively unused, we can drop it and just pass NULL on to bdrv_open_inherit(). Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| * block: Always pass NULL as drv for bdrv_open()Max Reitz2015-09-142-7/+17
| | | | | | | | | | | | | | | | | | Change all callers of bdrv_open() to pass the driver name in the options QDict instead of passing its BlockDriver pointer. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* | Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell2015-09-141-0/+4
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Support for jemalloc * qemu_mutex_lock_iothread "No such process" fix * cutils: qemu_strto* wrappers * iohandler.c simplification * Many other fixes and misc patches. And some MTTCG work (with Emilio's fixes squashed): * Signal-free TCG kick * Removing spinlock in favor of QemuMutex * User-mode emulation multi-threading fixes/docs # gpg: Signature made Thu 10 Sep 2015 09:03:07 BST using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" * remotes/bonzini/tags/for-upstream: (44 commits) cutils: work around platform differences in strto{l,ul,ll,ull} cpu-exec: fix lock hierarchy for user-mode emulation exec: make mmap_lock/mmap_unlock globally available tcg: comment on which functions have to be called with mmap_lock held tcg: add memory barriers in page_find_alloc accesses remove unused spinlock. replace spinlock by QemuMutex. cpus: remove tcg_halt_cond and tcg_cpu_thread globals cpus: protect work list with work_mutex scripts/dump-guest-memory.py: fix after RAMBlock change configure: Add support for jemalloc add macro file for coccinelle configure: factor out adding disas configure vhost-scsi: fix wrong vhost-scsi firmware path checkpatch: remove tests that are not relevant outside the kernel checkpatch: adapt some tests to QEMU CODING_STYLE: update mixed declaration rules qmp: Add example usage of strto*l() qemu wrapper cutils: Add qemu_strtoull() wrapper cutils: Add qemu_strtoll() wrapper ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * block/iscsi: validate block size returned from targetPeter Lieven2015-09-071-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | It has been reported that at least tgtd returns a block size of 0 for LUN 0. To avoid running into divide by zero later on and protect against other problematic block sizes validate the block size right at connection time. Cc: qemu-stable@nongnu.org Reported-by: Andrey Korolyov <andrey@xdel.ru> Signed-off-by: Peter Lieven <pl@kamp.de> Message-Id: <1439552016-8557-1-git-send-email-pl@kamp.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* | maint: remove / fix many doubled wordsDaniel P. Berrange2015-09-112-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | Many source files have doubled words (eg "the the", "to to", and so on). Most of these can simply be removed, but a couple were actual mis-spellings (eg "to to" instead of "to do"). There was even one triple word score "to to to" :-) Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* | maint: remove double semicolons in many filesDaniel P. Berrange2015-09-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A number of source files have statements accidentally terminated by a double semicolon - eg 'foo = bar;;'. This is harmless but a mistake none the less. The tcg/ia64/tcg-target.c file is whitelisted because it has valid use of ';;' in a comment containing assembly code. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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