These functions are always called indirectly. It really doesn't make sense
for them to sit in a header file.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
XkbGetKeyboard does not work in XWayland and even on non-Wayland
X11 servers its use is discouraged:
https://bugs.freedesktop.org/show_bug.cgi?id=89240
This resolves a problem whereby QEMU prints
"could not lookup keycode name"
on startup when running under XWayland. Keymap handling is
however still broken after this commit, since Xwayland is
reporting a keymap we can't handle
"unknown keycodes `(unnamed)', please report to qemu-devel@nongnu.org"
NB, native Wayland support (which is the default under GTK3) is
not affected - only XWayland (which can be requested with GDK_BACKEND
on GTK3, and is the only option for GTK2).
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170227132343.30824-1-berrange@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Helper function (and DisplayChangeListenerOps ptr) to disable scanouts.
Replaces using dpy_gl_scanout_texture with 0x0 size and no texture
specified.
Allows cleanups to make the io and gfx emulation code more readable.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 1487669841-13668-3-git-send-email-kraxel@redhat.com
We'll add a variant which accepts dmabufs soon. Change
the name so we can easily disturgish the two variants.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 1487669841-13668-2-git-send-email-kraxel@redhat.com
Crypto routines 'qcrypto_cipher_get_block_len' and
'qcrypto_cipher_get_key_len' return non-zero cipher block and key
lengths from static arrays 'alg_block_len[]' and 'alg_key_len[]'
respectively. Returning 'zero(0)' value from either of them would
likely lead to an error condition.
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
On error path, the 'salt' doesn't been freed thus leading
a memory leak. This patch avoid this.
Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
nodes[id].next is written by other threads. If atomic_read is not used
(matching atomic_set in mcs_mutex_lock!) the compiler can optimize the
whole "if" away!
Reported-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Greg Kurz <groug@kaod.org>
Message-id: 20170227111726.9237-1-pbonzini@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)
iQEcBAABAgAGBQJYs072AAoJEDNgw/dBGhJfJNMH/iPNHzrZLRilU6CceYpNQW1Z
262rITUXBZ04vVhNjdIU6OZDjD12eY67eznfapsNNJPSNNR7UUMa8dymFZfBxgRL
Kl9jciJKhWUBdzn8qkvP2umXA9I6NZs+OJbSz8vIYVEX8mF8EaYNLGP40J+4qc+X
2GByZRu5yoYe5Ex1hNgdzPGPlyvJwymu0y7WW0gDPCrKtSSGz7NRGA9S2dvbFGQb
kNnkkS2aEkbt8fDWsTkcKVog3jFNfBzdEYUJel237+dMqnepFt5V1UWFANznb7Xp
pmdOWYhWntvi8ONwJW+RRWe4Mes2ySfqelmVD602dreuIRkX1bHBWkXA3S8pSmM=
=2VrG
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/artyom/tags/pull-sun4v-20170226' into staging
Pull request for Niagara patches 2017 02 26
# gpg: Signature made Sun 26 Feb 2017 21:56:06 GMT
# gpg: using RSA key 0x3360C3F7411A125F
# gpg: Good signature from "Artyom Tarasenko <atar4qemu@gmail.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 2AD8 6149 17F4 B2D7 05C0 BB12 3360 C3F7 411A 125F
* remotes/artyom/tags/pull-sun4v-20170226:
niagara: check if a serial port is available
niagara: fail if a firmware file is missing
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
fail if a firmware file is missing and not qtest_enabled(),
the later is necessary to allow some basic tests if
firmware is not available
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com>
Coverity points out (CID 1005725) that an error-exit path in tcp_listen()
will try to close(s) even if the reason it got there was that the
qemu_socket() failed and s was never opened. Not only that, this isn't even
the right function to use, because we need closesocket() to do the right
thing on Windows. Change to using the right function and only calling it if
needed.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
The mbuf code currently doesn't check the result of doing a malloc()
or realloc() of its data (spotted by Coverity, CID 1238946).
Since the m_inc() API assumes that extending an mbuf must succeed,
just convert to g_malloc() and g_free().
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Check the return value from qemu_socket() rather than trying to
pass it to bind() as an fd argument even if it's negative.
This wouldn't have caused any negative consequences, because
it won't be a valid fd number and the bind call will fail;
but Coverity complains (CID 1005723).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)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=OYgF
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Block layer patches
# gpg: Signature made Fri 24 Feb 2017 18:08:26 GMT
# gpg: using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* remotes/kevin/tags/for-upstream:
tests: Use opened block node for block job tests
vvfat: Use opened node as backing file
block: Add bdrv_new_open_driver()
block: Factor out bdrv_open_driver()
block: Use BlockBackend for image probing
block: Factor out bdrv_open_child_bs()
block: Attach bs->file only during .bdrv_open()
block: Pass BdrvChild to bdrv_truncate()
mirror: Resize active commit base in mirror_run()
qcow2: Use BB for resizing in qcow2_amend_options()
blockdev: Use BlockBackend to resize in qmp_block_resize()
iotests: Fix another race in 030
qemu-img: Improve documentation for PREALLOC_MODE_FALLOC
qemu-img: Truncate before full preallocation
qemu-img: Add tests for raw image preallocation
qemu-img: Do not truncate before preallocation
qemu-iotests: redirect nbd server stdout to /dev/null
qemu-iotests: add ability to exclude certain protocols from tests
qemu-iotests: Test 137 only supports 'file' protocol
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
CHanges:
* Add the Boston board with fixing the make check issue on 32-bit hosts.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (GNU/Linux)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=xOs6
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/yongbok/tags/mips-20170224-2' into staging
MIPS patches 2017-02-24-2
CHanges:
* Add the Boston board with fixing the make check issue on 32-bit hosts.
# gpg: Signature made Fri 24 Feb 2017 11:43:45 GMT
# gpg: using RSA key 0x2238EB86D5F797C2
# gpg: Good signature from "Yongbok Kim <yongbok.kim@imgtec.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 8600 4CF5 3415 A5D9 4CFA 2B5C 2238 EB86 D5F7 97C2
* remotes/yongbok/tags/mips-20170224-2:
hw/mips: MIPS Boston board support
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- cleanups, fixes and improvements
- program check loop detection (useful with the corresponding kernel
patch)
- wire up virtio-crypto for ccw
- and finally support many virtqueues for virtio-ccw
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=uM3N
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20170224' into staging
A selection of s390x patches:
- cleanups, fixes and improvements
- program check loop detection (useful with the corresponding kernel
patch)
- wire up virtio-crypto for ccw
- and finally support many virtqueues for virtio-ccw
# gpg: Signature made Fri 24 Feb 2017 09:19:19 GMT
# gpg: using RSA key 0xDECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg: aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0 18CE DECF 6B93 C6F0 2FAF
* remotes/cohuck/tags/s390x-20170224:
s390x/css: handle format-0 TIC CCW correctly
s390x/arch_dump: pass cpuid into notes sections
s390x/arch_dump: use proper note name and note size
virtio-ccw: support VIRTIO_QUEUE_MAX virtqueues
s390x: bump ADAPTER_ROUTES_MAX_GSI
virtio-ccw: check flic->adapter_routes_max_batch
s390x: add property adapter_routes_max_batch
virtio-ccw: Check the number of vqs in CCW_CMD_SET_IND
virtio-ccw: add virtio-crypto-ccw device
virtio-ccw: handle virtio 1 only devices
s390x/flic: fail migration on source already
s390x/kvm: detect some program check loops
s390x/s390-virtio: get rid of DPRINTF
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Hi Peter,
These are testing and build automation patches:
- Shippable.com powered CI config
- Docker cross build
- Fixes and MAINTAINERS tweaks.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iQEtBAABCAAXBQJYr9MuEBxmYW16QHJlZGhhdC5jb20ACgkQyjViTGqRccb9cQf9
FRjpMS0LP0IGTF6YkURivG09bPsl9owGfiZjRNo2DnEFmATY+aOoSvJMNyUBGwsi
k9I1AgWZ6VPob4TDqDnPWHaNGNGLb7quP0rMN/Q2TvPGbmkevD4o7SX5cDCEPA/D
QLxvG/SYb1R6a9lEmmyPgk8Q7zwB3nVAITvQMLVwVgzGk8t6uDNHBt+Fckf4zyJL
XbuKYqAgICRGMDhuqqF9IkVO7wHCS3Gh0SqNKDMEZPeEgnWjFbyjsZxIJihk7tZP
ZFCLEtnNYmNZmeFAJCL8p7PvsnXHF0lcWTIVzC5FOjPu9ytmcqw3GmgvghmCjFrG
aGH8BYguc+SmQOUqtnR4lA==
=JQKW
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/famz/tags/for-upstream' into staging
Docker testing and shippable patches
Hi Peter,
These are testing and build automation patches:
- Shippable.com powered CI config
- Docker cross build
- Fixes and MAINTAINERS tweaks.
# gpg: Signature made Fri 24 Feb 2017 06:31:10 GMT
# gpg: using RSA key 0xCA35624C6A9171C6
# gpg: Good signature from "Fam Zheng <famz@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 5003 7CB7 9706 0F76 F021 AD56 CA35 624C 6A91 71C6
* remotes/famz/tags/for-upstream:
docker: Install python2 explicitly in docker image
MAINTAINERS: merge Build and test automation with Docker tests
.shippable.yml: new CI provider
new: debian docker targets for cross-compiling
tests/docker: add basic user mapping support
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-----BEGIN PGP SIGNATURE-----
iQIcBAABAgAGBQJYrzrdAAoJEDhwtADrkYZTjJIP/0pjdtvdCdIq855DSgHO6jdm
xM3W1DngCHt78LPXKutqRX8le2tFuY7uXQG2PqTXtirni5WKB9MB4wdOzeucrXvW
NIpb8AC1GM0ToOwQvrc8T840QfdGFFE8X2DIAPPYcBivQWAlRi6tqbGY8KwvWFYC
vSjUIJbIu8mOUt49Q5LfhaH2UPJlcNlED/oUmDLorz9Rz6E75EHP5pKPrr7Y0JkX
4wjxSE18yM4z0wXwIfRiW5zKDs7JuvHwLSVX75ZwpS5GpWgGsyc4EeyAQb5Xi97s
/S3a4SFj/kOvDeuw8uy7BkuPknYF2hHD6XUkoIWr2hiyjatjeAM9USO18N2HwoIg
rO3Icw1HADC8Z/RrXjKecaLAA+gKNFGAMgmrYH0GImg6QfC24VQdHNXm3v+i1i27
1p6AnSdtzG26DPk8pJODn2UbxngoeHUy0PPjra7ZEMDK7Igkw8x0oFBL887jPxkd
oyBA5S4dOUCYXo86hYjjrhRXrQ7j5oIx45myX8jX6RoQLEq1XrUiVN59t1WXW5Vv
EiZc7YB/QSPMZe/q0DiWvif4DH+YLAqD9k7OeQ2HjINBf5sKqIn3lGO0zloL2W+8
mQ9+HLryP4j+PRbtpQavnAYg6Mo7Qzg9y5ZkABAj0fdyPJFZ8ZZ7gH0+atF1CjlP
Vvv+VdyWpzKfFam752Hk
=o8eA
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/armbru/tags/pull-util-2017-02-23' into staging
option cutils: Fix and clean up number conversions
# gpg: Signature made Thu 23 Feb 2017 19:41:17 GMT
# gpg: using RSA key 0x3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653
* remotes/armbru/tags/pull-util-2017-02-23: (24 commits)
option: Fix checking of sizes for overflow and trailing crap
util/cutils: Change qemu_strtosz*() from int64_t to uint64_t
util/cutils: Return qemu_strtosz*() error and value separately
util/cutils: Let qemu_strtosz*() optionally reject trailing crap
qemu-img: Wrap cvtnum() around qemu_strtosz()
test-cutils: Drop suffix from test_qemu_strtosz_simple()
test-cutils: Use qemu_strtosz() more often
util/cutils: Drop QEMU_STRTOSZ_DEFSUFFIX_* macros
util/cutils: New qemu_strtosz()
util/cutils: Rename qemu_strtosz() to qemu_strtosz_MiB()
util/cutils: New qemu_strtosz_metric()
test-cutils: Cover qemu_strtosz() around range limits
test-cutils: Cover qemu_strtosz() with trailing crap
test-cutils: Cover qemu_strtosz() invalid input
test-cutils: Add missing qemu_strtosz()... endptr checks
option: Fix to reject invalid and overflowing numbers
util/cutils: Clean up control flow around qemu_strtol() a bit
util/cutils: Clean up variable names around qemu_strtol()
util/cutils: Rename qemu_strtoll(), qemu_strtoull()
util/cutils: Rewrite documentation of qemu_strtol() & friends
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Rbd can do readv and writev directly, so wo do not need to transform
iov to buf or vice versa any more.
Signed-off-by: tianqing <tianqing@unitedstack.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
if the passed qiov contains exactly one iov we can
pass the buffer directly.
Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 1487349541-10201-3-git-send-email-pl@kamp.de
Signed-off-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 1487349541-10201-2-git-send-email-pl@kamp.de
Signed-off-by: Jeff Cody <jcody@redhat.com>
blk_insert_bs() and block job related functions will soon require an
opened block node (permission calculations will involve the block
driver), so let our tests be consistent with the real users in this
respect.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
We should not try to assign a not yet opened node as the backing file,
because as soon as the permission system is added it will fail. The
just added bdrv_new_open_driver() function is the right tool to open a
file with an internal driver, use it.
In case anyone wonders whether that magic fake backing file to trigger a
special action on 'commit' actually works today: No, not for me. One
reason is that we've been adding a raw format driver on top for several
years now and raw doesn't support commit. Other reasons include that the
backing file isn't writable and the driver doesn't support reopen, and
it's also size 0 and the driver doesn't support bdrv_truncate. All of
these are easily fixable, but then 'commit' ended up in an infinite loop
deep in the vvfat code for me, so I thought I'd best leave it alone. I'm
not really sure what it was supposed to do anyway.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
This function allows to create more or less normal BlockDriverStates
even for BlockDrivers that aren't globally registered (e.g. helper
filters for block jobs).
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
This is a function that doesn't do any option parsing, but just does
some basic BlockDriverState setup and calls the .bdrv_open() function of
the block driver.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
This fixes the use of a parent-less BdrvChild in bdrv_open_inherit() by
converting it into a BlockBackend. Which is exactly what it should be,
image probing is an external, standalone user of a node. The requests
can't be considered to originate from the format driver node because
that one isn't even opened yet.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
This is the part of bdrv_open_child() that opens a BDS with option
inheritance, but doesn't attach it as a child to the parent yet.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
The way that attaching bs->file worked was a bit unusual in that it was
the only child that would be attached to a node which is not opened yet.
Because of this, the block layer couldn't know yet which permissions the
driver would eventually need.
This patch moves the point where bs->file is attached to the beginning
of the individual .bdrv_open() implementations, so drivers already know
what they are going to do with the child. This is also more consistent
with how driver-specific children work.
For a moment, bdrv_open() gets its own BdrvChild to perform image
probing, but instead of directly assigning this BdrvChild to the BDS, it
becomes a temporary one and the node name is passed as an option to the
drivers, so that they can simply use bdrv_open_child() to create another
reference for their own use.
This duplicated child for (the not opened yet) bs is not the final
state, a follow-up patch will change the image probing code to use a
BlockBackend, which is completely independent of bs.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
This is more consistent with the commit block job, and it moves the code
to a place where we already have the necessary BlockBackends to resize
the base image when bdrv_truncate() is changed to require a BdrvChild.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
In order to able to convert bdrv_truncate() to take a BdrvChild and
later to correctly check the resize permission here, we need to use a
BlockBackend for resizing the image.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
In order to be able to do permission checking and to keep working with
the BdrvChild based bdrv_truncate() that this involves, we need to
create a temporary BlockBackend to resize the image.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
We can't rely on a non-paused job to be present and running for us.
Assume that if the job is not present that it completed already.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Now that we are truncating the file in both PREALLOC_MODE_FULL and
PREALLOC_MODE_OFF, not truncating in PREALLOC_MODE_FALLOC looks odd.
Add a comment explaining why we do not truncate in this case.
Signed-off-by: Nir Soffer <nirsof@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
In a previous commit (qemu-img: Do not truncate before preallocation) we
moved truncate to the PREALLOC_MODE_OFF branch to avoid slowdown in
posix_fallocate().
However this change is not optimal when using PREALLOC_MODE_FULL, since
knowing the final size from the beginning could allow the file system
driver to do less allocations and possibly avoid fragmentation of the
file.
Now we truncate also before doing full preallocation.
Signed-off-by: Nir Soffer <nirsof@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Add tests for creating raw image with and without the preallocation
option.
Signed-off-by: Nir Soffer <nirsof@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
When using file system that does not support fallocate() (e.g. NFS <
4.2), truncating the file only when preallocation=OFF speeds up creating
raw file.
Here is example run, tested on Fedora 24 machine, creating raw file on
NFS version 3 server.
$ time ./qemu-img-master create -f raw -o preallocation=falloc mnt/test 1g
Formatting 'mnt/test', fmt=raw size=1073741824 preallocation=falloc
real 0m21.185s
user 0m0.022s
sys 0m0.574s
$ time ./qemu-img-fix create -f raw -o preallocation=falloc mnt/test 1g
Formatting 'mnt/test', fmt=raw size=1073741824 preallocation=falloc
real 0m11.601s
user 0m0.016s
sys 0m0.525s
$ time dd if=/dev/zero of=mnt/test bs=1M count=1024 oflag=direct
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 15.6627 s, 68.6 MB/s
real 0m16.104s
user 0m0.009s
sys 0m0.220s
Running with strace we can see that without this change we do one
pread() and one pwrite() for each block. With this change, we do only
one pwrite() per block.
$ strace ./qemu-img-master create -f raw -o preallocation=falloc mnt/test 8192
...
pread64(9, "\0", 1, 4095) = 1
pwrite64(9, "\0", 1, 4095) = 1
pread64(9, "\0", 1, 8191) = 1
pwrite64(9, "\0", 1, 8191) = 1
$ strace ./qemu-img-fix create -f raw -o preallocation=falloc mnt/test 8192
...
pwrite64(9, "\0", 1, 4095) = 1
pwrite64(9, "\0", 1, 8191) = 1
This happens because posix_fallocate is checking if each block is
allocated before writing a byte to the block, and when truncating the
file before preallocation, all blocks are unallocated.
Signed-off-by: Nir Soffer <nirsof@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Some iotests (e.g. 174) try to filter the output of _make_test_image by
piping the stdout. Pipe the server stdout to /dev/null, so that filter
pipe does not need to wait until process completion.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
