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* qemu-img: fix invalid JSONPaolo Bonzini2013-09-121-1/+1
| | | | | | | | | | Single quotes for JSON are a QMP-ism, use real JSON in qemu-img output. Reported-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-img create: Emit filename on errorMax Reitz2013-09-121-1/+1
| | | | | | | | bdrv_img_create generally does not emit the target filename, although this is pretty important information. Therefore, prepend its error message with the output filename (if an error occurs). Signed-off-by: Max Reitz <mreitz@redhat.com>
* block: Error parameter for create functionsMax Reitz2013-09-121-11/+5
| | | | | | | Add an Error ** parameter to bdrv_create and its associated functions to allow more specific error messages. Signed-off-by: Max Reitz <mreitz@redhat.com>
* block: Error parameter for open functionsMax Reitz2013-09-121-7/+14
| | | | | | | Add an Error ** parameter to bdrv_open, bdrv_file_open and associated functions to allow more specific error messages. Signed-off-by: Max Reitz <mreitz@redhat.com>
* snapshot: distinguish id and name in snapshot deleteWenchao Xia2013-09-121-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | Snapshot creation actually already distinguish id and name since it take a structured parameter *sn, but delete can't. Later an accurate delete is needed in qmp_transaction abort and blockdev-snapshot-delete-sync, so change its prototype. Also *errp is added to tip error, but return value is kepted to let caller check what kind of error happens. Existing caller for it are savevm, delvm and qemu-img, they are not impacted by introducing a new function bdrv_snapshot_delete_by_id_or_name(), which check the return value and do the operation again. Before this patch: For qcow2, it search id first then name to find the one to delete. For rbd, it search name. For sheepdog, it does nothing. After this patch: For qcow2, logic is the same by call it twice in caller. For rbd, it always fails in delete with id, but still search for name in second try, no change to user. Some code for *errp is based on Pavel's patch. Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com> Signed-off-by: Pavel Hrdina <phrdina@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: Image file option amendmentMax Reitz2013-09-121-0/+84
| | | | | | | | | | This patch adds the "amend" option to qemu-img which allows changing image options on existing image files. It also adds the generic bdrv implementation which is basically just a wrapper for the image format specific function. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-img: add a "map" subcommandPaolo Bonzini2013-09-061-0/+191
| | | | | | | | This command dumps the metadata of an entire chain, in either tabular or JSON format. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: make bdrv_has_zero_init return false for copy-on-write-imagesPaolo Bonzini2013-09-061-8/+1
| | | | | | | | This helps implementing is_allocated on top of get_block_status. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* qemu-img: always probe the input image for allocated sectorsPaolo Bonzini2013-09-061-21/+19
| | | | | | | | | | | | | | | | | | | qemu-img convert can assume "that sectors which are unallocated in the input image are present in both the output's and input's base images". However it is only doing this if the output image returns true for bdrv_has_zero_init(). Testing bdrv_has_zero_init() does not make much sense if the output image is copy-on-write, because a copy-on-write image is never initialized to zero (it is initialized to the content of the backing file). There is nothing here that makes has_zero_init images special. The input and output must be equal for the operation to make sense, and that's it. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: expect errors from bdrv_co_is_allocatedPaolo Bonzini2013-09-061-2/+14
| | | | | | | | | | | | | Some bdrv_is_allocated callers do not expect errors, but the fallback in qcow2.c might make other callers trip on assertion failures or infinite loops. Fix the callers to always look for errors. Cc: qemu-stable@nongnu.org Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: make bdrv_delete() staticFam Zheng2013-09-061-13/+13
| | | | | | | | | | | | | Manage BlockDriverState lifecycle with refcnt, so bdrv_delete() is no longer public and should be called by bdrv_unref() if refcnt is decreased to 0. This is an identical change because effectively, there's no multiple reference of BDS now: no caller of bdrv_ref() yet, only bdrv_new() sets bs->refcnt to 1, so all bdrv_unref() now actually delete the BDS. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* add qemu-img convert -n option (skip target volume creation)Alexandre Derumier2013-09-061-15/+38
| | | | | | | | | | | | | | Add a -n option to skip volume creation on qemu-img convert. This is useful for targets such as rbd / ceph, where the target volume may already exist; we cannot always rely on qemu-img convert to create the image, as dependent on the output format, there may be parameters which are not possible to specify through the qemu-img convert command line. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Alexandre Derumier <aderumier@odiso.com> Signed-off-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* ignore SIGPIPE in qemu-img and qemu-ioMORITA Kazutaka2013-08-061-0/+4
| | | | | | | | | This prevents the tools from being stopped when they write data to a closed connection in the other side. Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-img: Error out for excess argumentsKevin Wolf2013-08-061-7/+10
| | | | | | | | | | | | Don't silently ignore excess arguments at the end of the command line, but error out instead. This can catch typos like 'resize test.img + 1G', which doesn't increase the image size by 1G as intended, but truncates the image to 1G. Even for less dangerous commands, the old behaviour is confusing. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: Don't parse protocol from file.filenameKevin Wolf2013-07-151-2/+2
| | | | | | | | | | | | | One of the major reasons for doing something new for -blockdev and blockdev-add was that the old block layer code parses filenames instead of just taking them literally. So we should really leave it untouched when it's passing using the new interfaces (like -drive file.filename=...). This allows opening relative file names that contain a colon. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* qemu-img: Add missing GCC_FMT_ATTRStefan Weil2013-06-211-1/+1
| | | | | | Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* block: add image info query function bdrv_query_image_info()Wenchao Xia2013-06-071-5/+6
| | | | | | | | | | This patch adds function bdrv_query_image_info(), which will retrieve image info in qmp object format. The implementation is based on the code moved from qemu-img.c, but uses block layer function to get snapshot info. Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: add snapshot info query function bdrv_query_snapshot_info_list()Wenchao Xia2013-06-071-1/+4
| | | | | | | | | | | This patch adds function bdrv_query_snapshot_info_list(), which will retrieve snapshot info of an image in qmp object format. The implementation is based on the code moved from qemu-img.c with modification to fit more for qmp based block layer API. Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* cutils: Support 'P' and 'E' suffixes in strtosz()Kevin Wolf2013-06-061-4/+6
| | | | | | Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: dump snapshot and image info to specified outputWenchao Xia2013-06-041-4/+5
| | | | | | | | | | | bdrv_snapshot_dump() and bdrv_image_info_dump() do not dump to a buffer now, some internal buffers are still used for format control, which have no chance to be truncated. As a result, these two functions have no more issue of truncation, and they can be used by both qemu and qemu-img with correct parameter specified. Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: move qmp and info dump related code to block/qapi.cWenchao Xia2013-06-041-152/+4
| | | | | | | | | | | | | | | | | | | This patch is a pure code move patch, except following modification: 1 get_human_readable_size() is changed to static function. 2 dump_human_image_info() is renamed to bdrv_image_info_dump(). 3 in qmp_query_block() and qmp_query_blockstats, use bdrv_next(bs) instead of direct traverse of global array 'bdrv_states'. 4 collect_snapshots() and collect_image_info() are renamed, unused parameter *fmt in collect_image_info() is removed. 5 code style fix. To avoid conflict and tip better, macro in header file is BLOCK_QAPI_H instead of QAPI_H. Now block.h and snapshot.h are at the same level in include path, block_int.h and qapi.h will both include them. Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-img: do not zero-pad the compressed write bufferStefan Hajnoczi2013-04-221-6/+2
| | | | | | | | | | | | bdrv_write_compressed() does not allow requests that span the end of the device. Therefore it is useless to zero-pad the last cluster and thereby exceed the end of the device. Let image formats handle zero-padding the final compressed cluster, if necessary. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: Add options QDict to bdrv_open() prototypeKevin Wolf2013-03-151-3/+3
| | | | | | | | | | It doesn't do anything yet except storing the options QDict in the BlockDriverState. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* qemu-img: Add compare subcommandMiroslav Rezanina2013-02-221-1/+289
| | | | | | | | | This patch adds new qemu-img subcommand that compares content of two disk images. Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* qemu-img: Add "Quiet mode" optionMiroslav Rezanina2013-02-221-48/+106
| | | | | | | | | There can be a need to turn output to stdout off. This patch adds a -q option that enable "Quiet mode". In Quiet mode, only errors are printed out. Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* qemu-img: add compressed clusters to BlockFragInfoStefan Hajnoczi2013-02-221-2/+5
| | | | | | | | Show how many clusters are compressed. This can be used to monitor how many compressed clusters remain and whether to recompress the image. Suggested-by: Cole Robinson <crobinso@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* qemu-img: fix missing space in qemu-img check outputStefan Hajnoczi2013-02-221-4/+5
| | | | | | | | | | The qemu-img check fragmentation printf() is missing a space before the '=' sign. The human output is not guaranteed to be stable and we are not aware of screen scrapers, so add the missing space. Also fix the missing indentation of the printf() arguments. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* qemu-img: add json output option to the check commandFederico Simoncelli2013-02-221-63/+169
| | | | | | | | | This option --output=[human|json] makes qemu-img check output a human or JSON representation at the choice of the user. Signed-off-by: Federico Simoncelli <fsimonce@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-img: find the image end offset during checkFederico Simoncelli2013-02-221-0/+4
| | | | | | | | | | This patch adds the support for reporting the image end offset (in bytes). This is particularly useful after a conversion (or a rebase) where the destination is a block device in order to find the first unused byte at the end of the image. Signed-off-by: Federico Simoncelli <fsimonce@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-img: report size overflow error messageliguang2013-01-021-3/+7
| | | | | | | | | | | | | | | | | | | qemu-img will complain when qcow or qcow2 size overflow for 64 bits, report the right message in this condition. $./qemu-img create -f qcow2 /tmp/foo 0x10000000000000000 before change: qemu-img: Invalid image size specified! You may use k, M, G or T suffixes for qemu-img: kilobytes, megabytes, gigabytes and terabytes. after change: qemu-img: Image size must be less than 8 EiB! [Resolved conflict with a9300911 goto removal -- Stefan] Signed-off-by: liguang <lig.fnst@cn.fujitsu.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* softmmu: move include files to include/sysemu/Paolo Bonzini2012-12-191-1/+1
| | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* misc: move include files to include/qemu/Paolo Bonzini2012-12-191-3/+3
| | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* block: move include files to include/block/Paolo Bonzini2012-12-191-1/+1
| | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* qapi: move include files to include/qobject/Paolo Bonzini2012-12-191-1/+1
| | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* use qemu_opts_create_nofailDong Xu Wang2012-12-111-1/+1
| | | | | | | | We will use qemu_opts_create_nofail function, it can make code more readable. Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-img: img_create(): drop unneeded goto and ret variableLuiz Capitulino2012-12-111-10/+4
| | | | | Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-img: img_create(): pass Error object to bdrv_img_create()Luiz Capitulino2012-12-111-2/+9
| | | | | Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: bdrv_img_create(): add Error ** argumentLuiz Capitulino2012-12-111-1/+1
| | | | | | | | | | | | This commit adds an Error ** argument to bdrv_img_create() and set it appropriately on error. Callers of bdrv_img_create() pass NULL for the new argument and still rely on bdrv_img_create()'s return value. Next commits will change callers to use the Error object instead. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* tools: initialize main loop before block layerPaolo Bonzini2012-11-061-2/+1
| | | | | | | | | Tools were broken because they initialized the block layer while qemu_aio_context was still NULL. Reported-by: malc <av1474@comtv.ru> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: malc <av1474@comtv.ru>
* qemu-img: Add --backing-chain option to info commandStefan Hajnoczi2012-10-241-14/+153
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The qemu-img info --backing-chain option enumerates the backing file chain. For example, for base.qcow2 <- snap1.qcow2 <- snap2.qcow2 the output becomes: $ qemu-img info --backing-chain snap2.qcow2 image: snap2.qcow2 file format: qcow2 virtual size: 100M (104857600 bytes) disk size: 196K cluster_size: 65536 backing file: snap1.qcow2 backing file format: qcow2 image: snap1.qcow2 file format: qcow2 virtual size: 100M (104857600 bytes) disk size: 196K cluster_size: 65536 backing file: base.qcow2 backing file format: qcow2 image: base.qcow2 file format: qcow2 virtual size: 100M (104857600 bytes) disk size: 136K cluster_size: 65536 Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-img rebase: use empty string to rebase without backing fileAlex Bligh2012-10-241-10/+19
| | | | | | | | | | | This patch allows an empty filename to be passed as the new base image name for qemu-img rebase to mean base the image on no backing file (i.e. independent of any backing file). According to Eric Blake, qemu-img rebase already supports this when '-u' is used; this adds support when -u is not used. Signed-off-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-img: Fix division by zero for zero size imagesKevin Wolf2012-10-241-8/+15
| | | | | Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
* Merge remote-tracking branch 'kwolf/for-anthony' into stagingAnthony Liguori2012-09-171-54/+203
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | * kwolf/for-anthony: block: Don't forget to delete temporary file Don't require encryption password for 'qemu-img info' command qemu-img: Add json output option to the info command. qapi: Add SnapshotInfo and ImageInfo. ahci: properly reset PxCMD on HBA reset block: fix block tray status vdi: Fix warning from clang block/curl: Fix wrong free statement ide: Fix error messages from static code analysis (no real error) ATAPI: STARTSTOPUNIT only eject/load media if powercondition is 0 sheepdog: fix savevm and loadvm
| * Don't require encryption password for 'qemu-img info' commandDaniel P. Berrange2012-09-121-10/+11
| | | | | | | | | | | | | | | | | | The encryption password is only required if I/O is going to be performed on a disk image. The 'qemu-img info' command merely reports metadata, so it should not ask for a decryption password Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| * qemu-img: Add json output option to the info command.Benoît Canet2012-09-121-44/+192
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This option --output=[human|json] make qemu-img info output on human or JSON representation at the choice of the user. example: { "snapshots": [ { "vm-clock-nsec": 637102488, "name": "vm-20120821145509", "date-sec": 1345553709, "date-nsec": 220289000, "vm-clock-sec": 20, "id": "1", "vm-state-size": 96522745 }, { "vm-clock-nsec": 28210866, "name": "vm-20120821154059", "date-sec": 1345556459, "date-nsec": 171392000, "vm-clock-sec": 46, "id": "2", "vm-state-size": 101208714 } ], "virtual-size": 1073741824, "filename": "snap.qcow2", "cluster-size": 65536, "format": "qcow2", "actual-size": 985587712, "dirty-flag": false } Signed-off-by: Benoit Canet <benoit@irqsave.net> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* | Spelling fixes in comments and documentationStefan Weil2012-09-141-1/+1
|/ | | | | | | | | | | | | | | | | | | | These wrong spellings were detected by codespell: * successully -> successfully * alot -> a lot * wanna -> want to * infomation -> information * occured -> occurred ["also is" -> "is also" and "ressources" -> "resources" suggested by Peter Maydell <peter.maydell@linaro.org>] Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
* block: add BLOCK_O_CHECK for qemu-img checkStefan Hajnoczi2012-08-101-1/+1
| | | | | | | | | | | | | | | | | | Image formats with a dirty bit, like qed and qcow2, repair dirty image files upon open with BDRV_O_RDWR. Performing automatic repair when qemu-img check runs is not ideal because the bdrv_open() call repairs the image before the actual bdrv_check() call from qemu-img.c. Fix this "double repair" since it leads to confusing output from qemu-img check. Tell the block driver that this image is being opened just for bdrv_check(). This skips automatic repair and qemu-img.c can invoke it manually with bdrv_check(). Update the golden output for qemu-iotests 039 to reflect the new qemu-img check output. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-img: use QemuOpts instead of QEMUOptionParameter in resize functionDong Xu Wang2012-08-061-11/+17
| | | | | | Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* Support 'help' as a synonym for '?' in command line optionsPeter Maydell2012-08-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | For command line options which permit '?' meaning 'please list the permitted values', add support for 'help' as a synonym, by abstracting the check out into a helper function. This change means that in some cases where we were being lazy in our string parsing, "?junk" will now be rejected as an invalid option rather than being (undocumentedly) treated the same way as "?". Update the documentation to use 'help' rather than '?', since '?' is a shell metacharacter and thus prone to fail confusingly if there is a single character filename in the current working directory and the '?' has not been escaped. It's therefore better to steer users towards 'help', though '?' is retained for backwards compatibility. We do not, however, update the output of the system emulator's -help (or any documentation autogenerated from the qemu-options.hx which is the source of the -help text) because libvirt parses our -help output and will break. At a later date when QEMU provides a better interface so libvirt can avoid having to do this, we can update the -help text too. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* block: Replace bdrv_get_format() by bdrv_get_format_name()Markus Armbruster2012-06-151-3/+2
| | | | | | | | | | | So callers don't need to know anything about maximum name length. Returning a pointer is safe, because the name string lives as long as the block driver it names, and block drivers don't die. Requested by Peter Maydell. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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