aboutsummaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2015-05-22block: align bounce buffers to pageDenis V. Lunev
The following sequence int fd = open(argv[1], O_RDWR | O_CREAT | O_DIRECT, 0644); for (i = 0; i < 100000; i++) write(fd, buf, 4096); performs 5% better if buf is aligned to 4096 bytes. The difference is quite reliable. On the other hand we do not want at the moment to enforce bounce buffering if guest request is aligned to 512 bytes. The patch changes default bounce buffer optimal alignment to MAX(page size, 4k). 4k is chosen as maximal known sector size on real HDD. The justification of the performance improve is quite interesting. From the kernel point of view each request to the disk was split by two. This could be seen by blktrace like this: 9,0 11 1 0.000000000 11151 Q WS 312737792 + 1023 [qemu-img] 9,0 11 2 0.000007938 11151 Q WS 312738815 + 8 [qemu-img] 9,0 11 3 0.000030735 11151 Q WS 312738823 + 1016 [qemu-img] 9,0 11 4 0.000032482 11151 Q WS 312739839 + 8 [qemu-img] 9,0 11 5 0.000041379 11151 Q WS 312739847 + 1016 [qemu-img] 9,0 11 6 0.000042818 11151 Q WS 312740863 + 8 [qemu-img] 9,0 11 7 0.000051236 11151 Q WS 312740871 + 1017 [qemu-img] 9,0 5 1 0.169071519 11151 Q WS 312741888 + 1023 [qemu-img] After the patch the pattern becomes normal: 9,0 6 1 0.000000000 12422 Q WS 314834944 + 1024 [qemu-img] 9,0 6 2 0.000038527 12422 Q WS 314835968 + 1024 [qemu-img] 9,0 6 3 0.000072849 12422 Q WS 314836992 + 1024 [qemu-img] 9,0 6 4 0.000106276 12422 Q WS 314838016 + 1024 [qemu-img] and the amount of requests sent to disk (could be calculated counting number of lines in the output of blktrace) is reduced about 2 times. Both qemu-img and qemu-io are affected while qemu-kvm is not. The guest does his job well and real requests comes properly aligned (to page). Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-id: 1431441056-26198-3-git-send-email-den@openvz.org CC: Paolo Bonzini <pbonzini@redhat.com> CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block: minimal bounce buffer alignmentDenis V. Lunev
The patch introduces new concept: minimal memory alignment for bounce buffers. Original so called "optimal" value is actually minimal required value for aligment. It should be used for validation that the IOVec is properly aligned and bounce buffer is not required. Though, from the performance point of view, it would be better if bounce buffer or IOVec allocated by QEMU will be aligned stricter. The patch does not change any alignment value yet. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-id: 1431441056-26198-2-git-send-email-den@openvz.org CC: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block: return EPERM on writes or discards to read-only devicesPaolo Bonzini
This is the behavior in the operating system, for example Linux's blkdev_write_iter has the following: if (bdev_read_only(I_BDEV(bd_inode))) return -EPERM; This does not apply to opening a device for read/write, when the device only supports read-only operation. In this case any of EACCES, EPERM or EROFS is acceptable depending on why writing is not possible. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-id: 1431013548-22492-1-git-send-email-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22configure: Add workaround for ccache and clangJohn Snow
Test if ccache is interfering with semantic analysis of macros, disable its habit of trying to compile already pre-processed versions of code if so. ccache attempts to save time by compiling pre-processed versions of code, but this disturbs clang's static analysis enough to produce false positives. ccache allows us to disable this feature, opting instead to compile the original version instead of its preprocessed version. This makes ccache much slower for cache misses, but at least it becomes usable with QEMU/clang. This workaround only activates for users using ccache AND clang, and only if their configuration is observed to be producing warnings. You may need to clear your ccache for builds started without -Werror, as those may continue to produce warnings from the cache. Thanks to Peter Eisentraut for his writeup on the issue: http://peter.eisentraut.org/blog/2014/12/01/ccache-and-clang-part-3/ Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1427324259-1481-5-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22configure: silence glib unknown attribute __alloc_size__John Snow
The glib headers use GCC attributes. Unfortunately the __GNUC__ and __GNUC_MINOR__ version macros are also defined by clang, but clang doesn't support the same attributes as GCC. clang 3.5.0 does not support the __alloc_size__ attribute: https://github.com/llvm-mirror/clang/commit/c047507a9a79e89fc8339e074fa72822a7e7ea73 The following warning is produced: gstrfuncs.h:257:44: warning: unknown attribute '__alloc_size__' ignored [-Wunknown-attributes] G_GNUC_MALLOC G_GNUC_ALLOC_SIZE(2); gmacros.h:67:45: note: expanded from macro 'G_GNUC_ALLOC_SIZE' #define G_GNUC_ALLOC_SIZE(x) __attribute__((__alloc_size__(x))) This patch checks whether glib headers cause warnings and disables -Wunknown-attributes if it is able to. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1427324259-1481-4-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22configure: factor out supported flag checkJohn Snow
Factor out the function that checks if a compiler flag is supported or not. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1427324259-1481-3-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22configure: handle clang -nopie argument warningStefan Hajnoczi
gcc 4.9.2 treats -nopie as an error: cc: error: unrecognized command line option ‘-nopie’ clang 3.5.0 treats -nopie as a warning: clang: warning: argument unused during compilation: '-nopie' The causes ./configure to fail with clang: ERROR: configure test passed without -Werror but failed with -Werror. Make the -nopie test use -Werror so that compile_prog works for both gcc and clang. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1427324259-1481-2-git-send-email-jsnow@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: improve image writing performance furtherDenis V. Lunev
Try to perform IO for the biggest continuous block possible. All blocks abscent in the image are accounted in the same type and preallocation is made for all of them at once. The performance for sequential write is increased from 200 Mb/sec to 235 Mb/sec on my SSD HDD. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-28-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: optimize linear image expansionDenis V. Lunev
Plain image expansion spends a lot of time to update image file size. This seriously affects the performance. The following simple test qemu_img create -f parallels -o cluster_size=64k ./1.hds 64G qemu_io -n -c "write -P 0x11 0 1024M" ./1.hds could be improved if the format driver will pre-allocate some space in the image file with a reasonable chunk. This patch preallocates 128 Mb using bdrv_write_zeroes, which should normally use fallocate() call inside. Fallback to older truncate() could be used as a fallback using image open options thanks to the previous patch. The benefit is around 15%. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Karan <rkagan@parallels.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-27-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: add prealloc-mode and prealloc-size open paramemetsDenis V. Lunev
This is preparational commit for tweaks in Parallels image expansion. The idea is that enlarge via truncate by one data block is slow. It would be much better to use fallocate via bdrv_write_zeroes and expand by some significant amount at once. Original idea with sequential file writing to the end of the file without fallocate/truncate would be slower than this approach if the image is expanded with several operations: - each image expanding means file metadata update, i.e. filesystem journal write. Truncate/write to newly truncated space update file metadata twice thus truncate removal helps. With fallocate call inside bdrv_write_zeroes file metadata is updated only once and this should happen infrequently thus this approach is the best one for the image expansion - tail writes are ordered, i.e. the guest IO queue could not be sent immediately to the host introducing additional IO delays This patch just adds proper parameters into BDRVParallelsState and performs options parsing in parallels_open. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-26-git-send-email-den@openvz.org CC: Roman Kagan <rkagan@parallels.com> CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: delay writing to BAT till bdrv_co_flush_to_osDenis V. Lunev
The idea is that we do not need to immediately sync BAT to the image as from the guest point of view there is a possibility that IO is lost even in the physical controller until flush command was finished. bdrv_co_flush_to_os is exactly the right place for this purpose. Technically the patch uses loaded BAT data as a cache and performs actual on-disk metadata updates in parallels_co_flush_to_os callback. This patch speed ups qemu-img create -f parallels -o cluster_size=64k ./1.hds 64G qemu-io -f parallels -c "write -P 0x11 0 1024k" 1.hds writing from 50-60 Mb/sec to 80-90 Mb/sec on rotational media and from 160 Mb/sec to 190 Mb/sec on SSD disk. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-25-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: create bat_entry_off helperDenis V. Lunev
calculate offset of the BAT entry in the image file. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-24-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: improve image reading performanceDenis V. Lunev
Try to perform IO for the biggest continuous block possible. The performance for sequential read is increased from 220 Mb/sec to 360 Mb/sec for continous image on my SSD HDD. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-23-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22iotests, parallels: check for incorrectly closed image in testsDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-22-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: implement incorrect close detectionDenis V. Lunev
The software driver must set inuse field in Parallels header to 0x746F6E59 when the image is opened in read-write mode. The presence of this magic in the header on open forces image consistency check. There is an unfortunate trick here. We can not check for inuse in parallels_check as this will happen too late. It is possible to do that for simple check, but during the fix this would always report an error as the image was opened in BDRV_O_RDWR mode. Thus we save the flag in BDRVParallelsState for this. On the other hand, nothing should be done to clear inuse in parallels_check. Generic close will do the job right. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-21-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: implement parallels_check method of block driverDenis V. Lunev
The check is very simple at the moment. It calculates necessary stats and fix only the following errors: - space leak at the end of the image. This would happens due to preallocation - clusters outside the image are zeroed. Nothing else could be done here Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-20-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: move parallels_open/probe to the very end of the fileDenis V. Lunev
This will help to avoid forward declarations for upcoming parallels_check Some very obvious formatting fixes were made to the moved code to make checkpatch happy. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-19-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: read parallels image header and BAT into single bufferDenis V. Lunev
This metadata cache would allow to properly batch BAT updates to disk in next patches. These updates will be properly aligned to avoid read-modify-write transactions on block level. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-18-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: keep BAT bitmap data in little endian in memoryDenis V. Lunev
This will allow to use this data as buffer to BAT update directly without any intermediate buffers. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-17-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: create bat2sect helperDenis V. Lunev
deduplicate copy/paste arithmetcs Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-16-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: rename catalog_ names to bat_Denis V. Lunev
BAT means 'block allocation table'. Thus this name is clean and shorter on writing. Some obvious formatting fixes in the old code were made to make checkpatch happy. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-15-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22parallels: change copyright information in the image headerDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-14-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22iotests, parallels: test for newly created parallels image via qemu-imgDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-13-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: support parallels image creationDenis V. Lunev
Do not even care to create WithoutFreeSpace image, it is obsolete. Always create WithouFreSpacExt one. The code also does not spend a lot of efforts to fill cylinders and heads fields, they are not used actually in a real life neither in QEMU nor in Parallels products. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-12-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22iotests, parallels: test for write into Parallels imageDenis V. Lunev
Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-11-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: _co_writev callback for Parallels formatDenis V. Lunev
Support write on Parallels images. The code is almost the same as one in the previous patch implemented scatter-gather IO for read. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-10-git-send-email-den@openvz.org CC: Roman Kagan <rkagan@parallels.com> CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: mark parallels format driver as zero initedDenis V. Lunev
From the guest point of view unallocated blocks are zeroed. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-9-git-send-email-den@openvz.org CC: Roman Kagan <rkagan@parallels.com> CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: replace magic constants 4, 64 with proper sizeofsDenis V. Lunev
simple purification.. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-8-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: provide _co_readv routine for parallels format driverDenis V. Lunev
Main approach is taken from qcow2_co_readv. The patch drops coroutine lock for the duration of IO operation and peforms normal scatter-gather IO using standard QEMU backend. The patch also adds comment about locking considerations in the driver. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Signed-off-by: Roman Kagan <rkagan@parallels.com> Message-id: 1430207220-24458-7-git-send-email-den@openvz.org CC: Roman Kagan <rkagan@parallels.com> CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: add get_block_statusRoman Kagan
Implement VFS method for get_block_status to Parallels format driver. qemu_co_mutex_lock is not necessary yet (the driver is read-only) but will be necessary very soon when write will be supported. Signed-off-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Denis V. Lunev <den@openvz.org> Message-id: 1430207220-24458-6-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: read up to cluster end in one goRoman Kagan
Teach parallels_read() to do reads in coarser granularity than just a single sector: if requested, read up to the cluster end in one go. Signed-off-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1430207220-24458-5-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: switch to bdrv_readRoman Kagan
Switch the .bdrv_read method implementation from using bdrv_pread() to bdrv_read() on the underlying file, since the latter is subject to i/o throttling while the former is not. Besides, since bdrv_read() operates in sectors rather than bytes, adjust the helper functions to do so too. Signed-off-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Denis V. Lunev <den@openvz.org> Message-id: 1430207220-24458-4-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> CC: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22block/parallels: rename parallels_header to ParallelsHeaderDenis V. Lunev
this follows QEMU coding convention Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1430207220-24458-3-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-22iotests, parallels: quote TEST_IMG in 076 test to be path-safeDenis V. Lunev
suggested by Jeff Cody Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Roman Kagan <rkagan@parallels.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1430207220-24458-2-git-send-email-den@openvz.org CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-05-21Merge remote-tracking branch 'remotes/kraxel/tags/pull-vnc-20150520-1' into ↵Peter Maydell
staging vnc: misc fixes. # gpg: Signature made Wed May 20 09:32:45 2015 BST 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-vnc-20150520-1: qemu-sockets: Report explicit error if unlink fails vnc: Tweak error when init fails vnc: Don't assert if opening unix socket fails ui: remove check for failure of qemu_acl_init() Strip brackets from vnc host Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-05-20qemu-sockets: Report explicit error if unlink failsCole Robinson
Consider this case: $ ls -ld ~/root-owned/ drwx--x--x. 2 root root 4096 Apr 29 12:55 /home/crobinso/root-owned/ $ ls -l ~/root-owned/foo.sock -rwxrwxrwx. 1 crobinso crobinso 0 Apr 29 12:55 /home/crobinso/root-owned/foo.sock $ qemu-system-x86_64 -vnc unix:~/root-owned/foo.sock qemu-system-x86_64: -vnc unix:/home/crobinso/root-owned/foo.sock: Failed to start VNC server: Failed to bind socket to /home/crobinso/root-owned/foo.sock: Address already in use ...which is techinically true, but the real error is that we failed to unlink. So report it. This may seem pathological but it's a real possibility via libvirt. Signed-off-by: Cole Robinson <crobinso@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-05-20vnc: Tweak error when init failsCole Robinson
Before: qemu-system-x86_64: -display vnc=unix:/root/foo.sock: Failed to start VNC server on `(null)': Failed to bind socket to /root/foo.sock: Permission denied After: qemu-system-x86_64: -display vnc=unix:/root/foo.sock: Failed to start VNC server: Failed to bind socket to /root/foo.sock: Permission denied Rather than tweak the string possibly show unix: value as well, just drop the explicit display reporting. We already get the cli string in the error message, that should be sufficient. Signed-off-by: Cole Robinson <crobinso@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-05-20vnc: Don't assert if opening unix socket failsCole Robinson
Reproducer: $ qemu-system-x86_64 -display vnc=unix:/root/i-cant-access-you.sock qemu-system-x86_64: iohandler.c:60: qemu_set_fd_handler2: Assertion `fd >= 0' failed. Aborted (core dumped) Signed-off-by: Cole Robinson <crobinso@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-05-20ui: remove check for failure of qemu_acl_init()Daniel P. Berrange
The qemu_acl_init() function has long since stopped being able to return NULL, since g_malloc will abort on OOM. As such the checks for NULL were unreachable code. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-05-20Strip brackets from vnc hostJán Tomko
Commit v2.2.0-1530-ge556032 vnc: switch to inet_listen_opts bypassed the use of inet_parse in inet_listen, making literal IPv6 addresses enclosed in brackets fail: qemu-kvm: -vnc [::1]:0: Failed to start VNC server on `(null)': address resolution failed for [::1]:5900: Name or service not known Strip the brackets to make it work again. Signed-off-by: Ján Tomko <jtomko@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-05-19Merge remote-tracking branch 'remotes/kraxel/tags/pull-serial-20150519-1' ↵Peter Maydell
into staging serial: fix multi-pci card error cleanup. # gpg: Signature made Tue May 19 11:47:29 2015 BST 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-serial-20150519-1: serial: fix multi-pci card error cleanup. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-05-19serial: fix multi-pci card error cleanup.Gerd Hoffmann
Put the number of serial ports into a local variable in multi_serial_pci_realize, then increment the port count (pci->ports) as we initialize the serial port cores. Now pci->ports always holds the number of successfully initialized ports and we can use multi_serial_pci_exit to properly cleanup the already initialized bits in case of a init failure. https://bugzilla.redhat.com/show_bug.cgi?id=970551 Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2015-05-19Merge remote-tracking branch 'remotes/kraxel/tags/pull-vga-20150519-1' into ↵Peter Maydell
staging hw/display: qomify vga cards # gpg: Signature made Tue May 19 11:23:09 2015 BST 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-vga-20150519-1: vga-pci: QOMify qxl: QOMify cirrus_vga: QOMify Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-05-19vga-pci: QOMifyGonglei
Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-05-19qxl: QOMifyGonglei
Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-05-19cirrus_vga: QOMifyGonglei
QOMify pci-cirrus-vga like isa-cirrus-vga device. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2015-05-19Merge remote-tracking branch 'remotes/pmaydell/tags/pull-cocoa-20150519' ↵Peter Maydell
into staging cocoa queue: * fix various issues with full screen in the OSX UI * set an icon for our binary file * add entries to the View menu for QEMU consoles * fix various warnings that are produced when building on 10.10 (largely deprecated interfaces) # gpg: Signature made Tue May 19 09:17:23 2015 BST using RSA key ID 14360CDE # gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" * remotes/pmaydell/tags/pull-cocoa-20150519: ui/cocoa: Add console items to the View menu ui/cocoa: Avoid deprecated NSOKButton/NSCancelButton constants ui/cocoa: Don't use NSWindow useOptimizedDrawing on OSX 10.10 and up ui/cocoa: Declare that QemuCocoaAppController implements NSApplicationDelegate ui/cocoa: openPanelDidEnd returnCode should be NSInteger, not int ui/cocoa: Remove compatibility ifdefs for OSX 10.4 ui/cocoa: Drop tests for CGImageCreateWithImageInRect support Makefile.target: set icon for binary file on Mac OS X ui/cocoa: Make -full-screen option work on Mac OS X ui/cocoa: Fix several full screen issues on Mac OS X Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-05-19ui/cocoa: Add console items to the View menuProgrammingkid
Add any console that is available to the current emulator as a menu item under the View menu. Signed-off-by: John Arbuckle <programmingkidx@gmail.com> [PMM: Adjusted to apply after zoom-to-fit menu item was added; create the View menu at the same time as all the others, and only add the dynamically-determined items to it later] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-05-19ui/cocoa: Avoid deprecated NSOKButton/NSCancelButton constantsPeter Maydell
In OSX 10.10, the NSOKButton and NSCancelButton constants are deprecated and provoke compiler warnings. Avoid them by using the NSFileHandlingPanelCancelButton and NSFileHandlingPanelOKButton constants instead. These are the documented correct constants for the 10.6-and-up beginSheetModalForWindow API we use. We also use the same method for the pre-10.6 compatibility code path, but conveniently the constant values are the same and the constant names have been present since 10.0. Preferring the constant names that match the non-legacy API makes more sense anyway. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1431296361-16981-7-git-send-email-peter.maydell@linaro.org
2015-05-19ui/cocoa: Don't use NSWindow useOptimizedDrawing on OSX 10.10 and upPeter Maydell
Starting in OSX 10.10, NSWindow useOptimizedDrawing is deprecated, so don't use it there. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1431296361-16981-6-git-send-email-peter.maydell@linaro.org
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-25 13:15:36 +0000