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2014-01-24block: Add bs->node_name to hold the name of a bs node of the bs graph.Benoît Canet3-15/+52
Add the minimum of code to prepare for the following patches. Signed-off-by: Benoit Canet <benoit@irqsave.net> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-24qapi: Add "backing" to BlockStatsFam Zheng2-4/+11
Currently there is no way to query BlockStats of the backing chain. This adds "backing" field into BlockStats to make it possible. The comment of "parent" is reworded. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-24vmdk: Fix format specific information (create type) for streamOptimizedFam Zheng1-0/+4
Previously the field is wrong: $ ./qemu-img create -f vmdk -o subformat=streamOptimized /tmp/a.vmdk 1G $ ./qemu-img info /tmp/a.vmdk image: /tmp/a.vmdk file format: vmdk virtual size: 1.0G (1073741824 bytes) disk size: 12K Format specific information: cid: 1390460459 parent cid: 4294967295 >>> create type: monolithicSparse <snip> Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-24drive mirror:fix memory leakZhang Min1-0/+1
In the function mirror_iteration() -> qemu_iovec_init(), it allocates memory for op->qiov.iov, when the write request calls back, but in the function mirror_iteration_done(), it only frees the op, not free the op->qiov.iov, so this causes memory leak. It should use qemu_iovec_destroy() to free op->qiov. Signed-off-by: Zhang Min <rudy.zhangmin@huawei.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-24sheepdog: fix 'qemu-img map'Liu Yuan1-2/+3
It was muted in the previous commit 4bc74be9. Let's revive it since nothing prevents us to do it. With this patch, following command will work as other formats: $ qemu-img map sheepdog:image Cc: qemu-devel@nongnu.org Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-24Documentation: qemu-img: Mention SIGUSR1 progress reportKevin Wolf1-1/+3
Document the SIGUSR1 behaviour of qemu-img. Also, added compare to the list of subcommands that support -p. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net>
2014-01-24qemu-progress: Fix progress printing on SIGUSR1Kevin Wolf1-0/+10
Since commit a7aae221 ('Switch SIG_IPI to SIGUSR1'), SIGUSR1 is blocked during startup, breaking the progress report in tools. This patch reenables the signal when initialising a progress report. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net>
2014-01-24qemu-progress: Drop unused includeKevin Wolf1-1/+0
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net>
2014-01-24vmdk: Check for overhead when openingFam Zheng3-0/+18
Report an error if file size is even smaller than metadata. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-24qcow2: fix wrong value of L1E_OFFSET_MASK, L2E_OFFSET_MASK and REFT_OFFSET_MASKHu Tao1-3/+3
Accoring to qcow spec, the offset fields in l1e, l2e and ref table entry start at bit 9. The offset is cluster offset, and the smallest possible cluster size is 512 bytes. Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22dataplane: fix shadowed return valueStefan Hajnoczi1-1/+1
Propagate the error return value from get_indirect(). This bug was introduced in commit 4d684832 ("vring: create a common function to parse descriptors"). Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22block: fix backing file segfaultPeter Feiner1-2/+6
When a backing file is opened such that (1) a protocol is directly used as the block driver and (2) the block driver has bdrv_file_open, bdrv_open_backing_file segfaults. The problem arises because bdrv_open_common returns without setting bd->backing_hd->file. To effect (1), you seem to have to use the -F flag in qemu-img. There are several block drivers that satisfy (2), such as "file" and "nbd". Here are some concrete examples: #!/bin/bash echo Test file format ./qemu-img create -f file base.file 1m ./qemu-img create -f qcow2 -F file -o backing_file=base.file\ file-overlay.qcow2 ./qemu-img convert -O raw file-overlay.qcow2 file-convert.raw echo Test nbd format SOCK=$PWD/nbd.sock ./qemu-img create -f raw base.raw 1m ./qemu-nbd -t -k $SOCK base.raw & trap "kill $!" EXIT while ! test -e $SOCK; do sleep 1; done ./qemu-img create -f qcow2 -F nbd -o backing_file=nbd:unix:$SOCK\ nbd-overlay.qcow2 ./qemu-img convert -O raw nbd-overlay.qcow2 nbd-convert.raw Without this patch, the two qemu-img convert commands segfault. This is a regression that was introduced in v1.7 by dbecebddfa4932d1c83915bcb9b5ba5984eb91be. Signed-off-by: Peter Feiner <peter@gridcentric.ca> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22iotests: Test file format nestingMax Reitz3-0/+91
Add a test for nested image formats. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22iotests: Test new blkdebug/blkverify interfaceMax Reitz3-0/+330
Add a test for the new blkdebug/blkverify interface. This test is not written in Python, although it uses QMP. This is because it invokes the qemu-io HMP command, which outputs errors to stderr instead of returning them through QMP. Filtering and testing that output is easier in a shell script than with the Python infrastructure. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22tests: Add test for qdict_flatten()Max Reitz1-0/+76
Add a test case for qdict_flatten() in tests/check-qdict.c. This test case covers the flattening of subordinate QLists as well. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22tests: Add test for qdict_array_split()Max Reitz1-0/+80
Add a test case for qdict_array_split() in tests/check-qdict.c. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22qemu-io: Make filename optionalMax Reitz1-3/+5
Giving a filename is actually not essential, since it can be specified through the options as well - on the contrary: Sometimes a filename must not be given. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22qapi: QMP interface for blkdebug and blkverifyMax Reitz1-4/+109
Add structures to support blkdebug and blkverify in blockdev-add. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22qapi: Add "errno" to the list of polluted wordsMax Reitz1-1/+1
Using "errno" directly as an identifier results in various syntax errors; therefore it should be added to the list of polluted words. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22blkverify: Don't require protocol filenameMax Reitz1-1/+3
If the filename is not prefixed by "blkverify:" in blkverify_parse_filename(), the blkverify driver was not selected through that protocol prefix, but by an explicit command line (or QMP) option (like driver=blkverify). If blkverify_parse_filename() has been called, a filename has been given. If it is not prefixed, it is probably really just a plain filename. This is no problem, since we can use it as the test image filename and rely on the user to specify the raw image filename through the new corresponding option. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22blkverify: Allow command-line configurationMax Reitz1-20/+5
Introduce the "test" and "raw" options for specifying images. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22blkdebug: Allow command-line file configurationMax Reitz1-9/+3
Introduce the "image" option as an alternative to specifying the image through the filename. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22blockdev: Move "file" to legacy_optsMax Reitz1-9/+10
Specifying the image filename through the "file" option is a legacy option and should not be supported by blockdev-add (in that case, giving a string for "file" references an existing block device). Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22block: Allow recursive "file"sMax Reitz2-3/+8
It should be possible to use a format as a driver for a file which in turn requires another file, i.e., nesting file formats. Allowing nested file formats results in e.g. qcow2 BlockDriverStates never being directly passed to bdrv_open_common() from bdrv_file_open(), but instead being handed through bdrv_open(). This changes the error message when trying to give a filename to qcow2, i.e. trying to use it as a driver for the protocol level. Therefore, change the reference output of I/O test 051 accordingly. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22block: Use bdrv_open_image() in bdrv_open()Max Reitz1-13/+5
Using bdrv_open_image() instead of bdrv_file_open() directly in bdrv_open() is easier. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22block: Add bdrv_open_image()Max Reitz2-0/+76
Add a common function for opening images to be used for block drivers specified through BlockdevRefs in an option QDict. The difference from bdrv_file_open() is that this function may invoke bdrv_open() instead, allowing auto-detection of the driver to be used; and second, it automatically extracts the BlockdevRef from the option QDict. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22block: Allow block devices without filesMax Reitz1-7/+16
blkdebug and blkverify will, in order to retain compatibility, not support the field "file" implicitly through bdrv_open(). In order to be able to use those drivers without giving a filename anyway, it is necessary to be able to have block devices without files implicitly opened by bdrv_open(). This is the case, if there was neither a file name, a reference to an existing block device to use as a file nor options specific to the file. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22block: Pass reference to bdrv_file_open()Max Reitz1-1/+4
With that now being possible, bdrv_open() should try to extract a block device reference from the options and pass it to bdrv_file_open(). Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22block: Allow reference for bdrv_file_open()Max Reitz12-19/+41
Allow specifying a reference to an existing block device (by name) for bdrv_file_open() instead of a filename and/or options. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22blkdebug: Use command-line in read_config()Max Reitz1-3/+12
Use qemu_config_parse_qdict() to parse the command-line options in addition to the config file. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22blkdebug: Always call read_config()Max Reitz1-17/+19
Move the check whether there actually is a config file into the read_config() function. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22qemu-option: Add qemu_config_parse_qdict()Max Reitz2-0/+106
This function basically parses command-line options given as a QDict replacing a config file. For instance, the QDict {"section.opt1": 42, "section.opt2": 23} corresponds to the config file: [section] opt1 = 42 opt2 = 23 It is possible to specify multiple sections and also multiple sections of the same type. On the command line, this looks like the following: inject-error.0.event=reftable_load,\ inject-error.1.event=l2_load,\ set-state.event=l1_update This would correspond to the following config file: [inject-error "inject-error.0"] event = reftable_load [inject-error "inject-error.1"] event = l2_load [set-state] event = l1_update Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22qapi: extend qdict_flatten() for QListsMax Reitz1-6/+48
Reversing qdict_array_split(), qdict_flatten() should flatten QLists as well by interpreting them as QDicts where every entry's key is its index. This allows bringing QDicts with QLists from QMP commands to the same form as they would be given as command-line options, thereby allowing them to be parsed the same way. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22qdict: Add qdict_array_split()Max Reitz2-0/+38
This function splits a QDict consisting of entries prefixed by incrementally enumerated indices into a QList of QDicts. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22blkdebug: Don't require sophisticated filenameMax Reitz1-1/+3
If the filename is not prefixed by "blkdebug:" in blkdebug_parse_filename(), the blkdebug driver was not selected through that protocol prefix, but by an explicit command line option (file.driver=blkdebug or something similar). Contrary to the current reaction, this is not a problem at all; we just need to store the filename (in the x-image option) and can go on; the user just has to manually specify the config option. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22blkdebug: Use errp for read_config()Max Reitz1-4/+6
Use an Error variable in the read_config() function. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22qemu-io: add command completionStefan Hajnoczi3-1/+25
Autocomplete qemu-io commands at the interactive prompt. Note this only completes command names and not their options. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22qemu-io: use readline.cStefan Hajnoczi1-45/+58
Use readline.c for command-line history. There was support for GNU Readline and BSD Editline but it was never compiled in. Since QEMU has its own readline.c, just use that when qemu-io runs with stdin attached to a terminal. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22osdep: add qemu_set_tty_echo()Stefan Hajnoczi3-0/+39
Using stdin with readline.c requires disabling echo and line buffering. Add a portable wrapper to set the terminal attributes under Linux and Windows. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22readline: move readline to a generic locationStefan Hajnoczi6-4/+4
Now that the monitor and readline are decoupled, readline.h no longer belongs in include/monitor/. Put the header into include/qemu/. Move the source file into util/ so it can be linked as part of libqemuutil.a. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22readline: decouple readline from the monitorStefan Hajnoczi4-38/+71
Make the readline.c functionality reusable. Instead of calling monitor_printf() and monitor_flush() directly, invoke function pointers provided by the user. This way readline.c does not know about Monitor and other users will be able to make use of readline.c. Note that there is already an "opaque" argument to the ReadLineFunc callback. Consistently call it "readline_opaque" from now on to distinguish from the ReadLinePrintfFunc/ReadLineFlushFunc "opaque" argument. I also dropped the printf macro trickery since it's now highly unlikely that anyone modifying readline.c would call printf(3) directly. We no longer need this protection. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22vmdk: Fix big flat extent IOFam Zheng3-2/+83
Local variable "n" as int64_t avoids overflow with large sector number calculation. See test case change for failure case. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22docs: qcow2 compat=1.1 is now the defaultStefan Hajnoczi2-8/+8
Commit 9117b47717ad208b12786ce88eacb013f9b3dd1c ("qcow2: Change default for new images to compat=1.1") changed the default qcow2 image format version but forgot to update qemu-doc.texi and qemu-img.texi. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22qtest: Fix the bug about disable vnc causes "make check" failKewei Yu2-7/+1
When we disable vnc from "./configure", QEMU can't use the vnc option. So qtest can't use the "vnc -none ", otherwise "make check" fails. If QEMU uses "-display none", "-vnc none" is excrescent, So we just need to drop it. Signed-off-by: Kewei Yu <keweihk@gmail.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22sheepdog: fix clone operation by 'qemu-img create -b'Liu Yuan1-8/+8
We should pass base_inode->vdi_id to base_vdi_id of SheepdogVdiReq so that sheep can create a clone instead a fresh volume. This fixes following command: qemu-create -b sheepdog:base sheepdog:clone so users can boot sheepdog:clone as a normal volume. Cc: qemu-devel@nongnu.org Cc: Kevin Wolf <kwolf@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Liu Yuan <namei.unix@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22gluster: Add support for creating zero-filled imageBharata B Rao1-1/+49
GlusterFS supports creation of zero-filled file on GlusterFS volume by means of an API called glfs_zerofill(). Use this API from QEMU to create an image that is filled with zeroes by using the preallocation option of qemu-img. qemu-img create gluster://server/volume/image -o preallocation=full 10G The allowed values for preallocation are 'full' and 'off'. By default preallocation is off and image is not zero-filled. glfs_zerofill() offloads the writing of zeroes to the server and if the storage supports SCSI WRITESAME, GlusterFS server can issue BLKZEROOUT ioctl to achieve the zeroing. Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22gluster: Implement .bdrv_co_write_zeroes for glusterBharata B Rao2-19/+68
Support .bdrv_co_write_zeroes() from gluster driver by using GlusterFS API glfs_zerofill() that off-loads the writing of zeroes to GlusterFS server. Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22gluster: Convert aio routines into coroutinesBharata B Rao1-147/+74
Convert the read, write, flush and discard implementations from aio-based ones to coroutine based ones. Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22block/iscsi: return -ENOMEM if an async call fails immediatelyPeter Lieven1-6/+6
if an async libiscsi call fails directly it can only be due to an out of memory condition. All other errors are returned through the callback. Signed-off-by: Peter Lieven <pl@kamp.de> Reviewed-by: Ronnie Sahlberg <ronniesahlberg@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22qemu-iotests: Clean up all extents for vmdkFam Zheng1-3/+14
This modifies _cleanup_test_img to remove all the extent files listed by "qemu-img info"'s format specific information. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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