On 01/30/2017 08:33 PM, Denis V. Lunev wrote:
On 01/30/2017 08:16 PM, Eric Blake wrote:
On 01/30/2017 04:22 AM, Denis V. Lunev wrote:
If explicit zeroing out before mirroring is required for the target image,
it moves the block job offset counter to EOF, then offset and len counters
count the
hi,
On 02/21/2017 01:42 PM, Paolo Bonzini wrote:
qemu_system_guest_panicked was already using current_cpu implicitly,
so it makes sense for it to receive a CPUState. This lets the
function call cpu_get_crash_info and free the result.
my motivation against this was that as
also remove a useless NULL check in the event reporting code
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
qapi/event.json | 4 ++--
vl.c| 22 ++
2 files changed, 12 insertions(+), 14 deletions(-)
diff --git a/qapi/event.json b/qapi/even
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
qapi/event.json | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/qapi/event.json b/qapi/event.json
index 970ff02..e02852c 100644
--- a/qapi/event.json
+++ b/qapi/event.json
@@ -488,9 +488,9 @@
#
# @
This patch is a follow-up for:
http://lists.nongnu.org/archive/html/qemu-devel/2017-02/msg03647.html
On 02/28/2017 03:07 PM, Daniel P. Berrange wrote:
The current websockets protocol handshake code is very relaxed, just
doing crude string searching across the HTTP header data. This causes
it to both reject valid connections and fail to reject invalid
connections. For example, according to the
On 04/21/2017 12:18 PM, Peter Lieven wrote:
Am 18.04.2017 um 12:27 schrieb Denis V. Lunev:
From: Anton Nefedov <anton.nefe...@virtuozzo.com>
We should wait for other coroutines on error path, i.e. one of coroutines
terminates with i/o error, before cleaning the common structures. In the
On 04/21/2017 01:44 PM, Peter Lieven wrote:
Am 21.04.2017 um 12:04 schrieb Anton Nefedov:
On error path (like i/o error in one of the coroutines), it's required to
- wait for coroutines completion before cleaning the common structures
- reenter dependent coroutines so they ever finish
On error path (like i/o error in one of the coroutines), it's required to
- wait for coroutines completion before cleaning the common structures
- reenter dependent coroutines so they ever finish
Introduced in 2d9187bc65.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
On 04/21/2017 03:37 PM, Peter Lieven wrote:
Am 21.04.2017 um 14:19 schrieb Anton Nefedov:
On 04/21/2017 01:44 PM, Peter Lieven wrote:
Am 21.04.2017 um 12:04 schrieb Anton Nefedov:
On error path (like i/o error in one of the coroutines), it's required to
- wait for coroutines completion
On 24/04/2017 21:16, Peter Lieven wrote:
Am 24.04.2017 um 18:27 schrieb Anton Nefedov <anton.nefe...@virtuozzo.com>:
On 04/21/2017 03:37 PM, Peter Lieven wrote:
Am 21.04.2017 um 14:19 schrieb Anton Nefedov:
On 04/21/2017 01:44 PM, Peter Lieven wrote:
Am 21.04.2017 um 12:04 schrieb
operations which are not cluster-aligned
Performance test results are added to commit messages (see patch 3, 12)
Anton Nefedov (10):
block: introduce BDRV_REQ_ALLOCATE flag
block: treat BDRV_REQ_ALLOCATE as serialising
file-posix: support BDRV_REQ_ALLOCATE
block: support BDRV_REQ_ALLOCATE
sters.
Possible conflicts are resolved by the common block layer code since
ALLOCATE requests are serialising.
Signed-off-by: Denis V. Lunev <d...@openvz.org>
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.h |
Current write_zeroes implementation is good enough to satisfy this flag too
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/file-posix.c | 9 -
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/block/file-posix.c b/block/file-posix.c
index cfbb236..b
request is in flight
already. Return EAGAIN, let the caller reconsider.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/io.c | 27 +++
1 file changed, 19 insertions(+), 8 deletions(-)
diff --git a/block/io.c b/block/io.c
index b3f9d61..1b935d8
COW (even empty/zero) areas require encryption too
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
tests/qemu-iotests/134 | 9 +
tests/qemu-iotests/134.out | 10 ++
2 files changed, 19 insertions(+)
diff --git a/tests/qemu-iotests/134 b/tests/qemu-iotes
Qcow2State and BlockDriverState flags have to be in sync
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/block/qcow2.c b/block/qcow2.c
index 1939d9b..b11dc48 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
tests/qemu-iotests/190 | 146 +
tests/qemu-iotests/190.out | 50
tests/qemu-iotests/group | 1 +
3 files changed, 197 insertions(+)
create mode 100755 test
-alignment areas that were not really COWed are now detected
as zeroes, hence the initial write has to be exactly the same size for
the maps to match
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.c | 22 +-
tests/qemu-iotests/060
To be used in the following commit without a forward declaration.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.c | 39 +++
1 file changed, 19 insertions(+), 20 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 0
From: "Denis V. Lunev" <d...@openvz.org>
This could be done after calculation of the end of data and metadata in
the qcow2 image.
Signed-off-by: Denis V. Lunev <d...@openvz.org>
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.h |
The flag is supposed to indicate that the region of the disk image has
to be sufficiently allocated so it reads as zeroes. The call with the flag
set has to return -ENOTSUP if allocation cannot be done efficiently
(i.e. without falling back to writing actual buffers)
Signed-off-by: Anton Nefedov
It can be detected that
1. COW alignment of a write request is zeroes
2. Respective areas on the underlying BDS already read as zeroes
after being preallocated previously
If both of these true, COW may be skipped
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
Support the flag if the underlying BDS supports it
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/blkdebug.c | 3 ++-
block/raw-format.c | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/block/blkdebug.c b/block/blkdebug.c
index c19ab28..e
-by: Denis V. Lunev <d...@openvz.org>
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.c | 32
tests/qemu-iotests/026.out | 104 -
tests/qemu-iotes
qemu_chr_new_from_opts() is used from both vl.c and hmp,
and it is quite confusing to see qemu suddenly exit after receiving a help
option in hmp.
Create a separate function for printing help and let different callers
react accordingly.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.
qemu_chr_new_from_opts() is used from both vl.c and hmp,
and it is quite confusing to see qemu suddenly exit after receiving a help
option in hmp.
Do exit(0) from vl.c instead.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
include/chardev/char.h | 4 +++-
chardev/
In case of a backend change, the handler functions and the watch have
to be reset.
Also, avoid unsafe qemu_chr_fe_get_driver() usage even though the pointer
is not really stored.
Amit, have you had a chance to kindly look at this?
/Anton
- Original Message -
Signed-off-by: Anton
Hi Paolo, Michael,
Any feedback on this change? (and a cosmetic patch 12 of this series)
Thanks a lot in advance,
/Anton
On 06/26/2017 07:45 PM, Anton Nefedov wrote:
for a backend change, a number of ioctls has to be replayed to sync
the current setup of a frontend to a backend tty
ointer
(qemu_chr_fe_get_driver()), and it will become invalid after backend change.
So, a frontend which would like to support chardev hotswap has to register
a "backend change" handler, and redo its backend setup there.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladim
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Acked-by: Dr. David Alan Gilbert <dgilb...@redhat.com>
---
include/chardev/char.h | 10 ++
hmp.h | 1 +
chardev/char.c
frontends should avoid accessing CharDriver struct where possible
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
include/chard
removal.
Yet isa-serial and virtio-serial frontends are supported.
The feature can be helpful for e.g. Windows debug allowing to
establish connection to a live VM from VM with WinDbg.
Anton Nefedov (13):
char: move QemuOpts->ChardevBackend translation to a separate func
char: add backend hots
Frontends should have an interface to setup the handler of a backend change.
The interface will be used in the next commits
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Reviewed-by: Marc-André Lureau &l
parse function will be used by the following patch
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
chardev/char.c | 81 --
1 file changed, 51 insertions(+), 30 deletions(-)
diff --git a/chardev/char.c b/chardev/char.c
qemu_chr_fe_get_driver() is unsafe, frontends with hotswap support
should not access CharDriver ptr directly as CharDriver might change.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Reviewed-by: Marc-
this is only not a problem if the test is last in a suite,
otherwise it makes the following main_loop() calls to fail
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/test-char.c | 1 +
1 file changed,
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/test-char.c | 71 +++
1 file changed, 71 insertions(+)
diff --git a/tests/test-char.c b/tests/test-
will be used by the following patch
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
hw/char/serial.c | 31 +++--
makes it possible to test the existing chardev-udp
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/test-char.c | 56 +++
1 file changed, 40 inser
makes it possible to test the existing chardev-file
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/test-char.c | 137 +-
1 file changed, 84 inser
ore and replay the whole original
control byte sequence.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
hw/char/serial.c | 30 +-
1 file changed, 29 insertions(+), 1 deletion
In case of a backend change, the handler functions and the watch have
to be reset.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
hw/char/virtio-console.c | 30 --
1 file
qemu_chr_fe_get_driver() is unsafe, frontends with hotswap support
should not access CharDriver ptr directly as CharDriver might change.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Reviewed-by: Marc-
In case of a backend change, the handler functions and the watch have
to be reset.
Also, avoid unsafe qemu_chr_fe_get_driver() usage even though the pointer
is not really stored.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy &l
this is only not a problem if the test is last in a suite,
otherwise it makes the following main_loop() calls to fail
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/test-char.c | 1 +
1 file changed,
So hotswap also has to be protected so write functions won't access
a backend being replaced.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
include/chardev/char-fe.h | 17 ++
include/chardev/c
will be used by the following patch
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
hw/char/serial.c | 31 +++--
makes it possible to test the existing chardev-file
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/test-char.c | 137 +-
1 file changed, 84 inser
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
CC: Dr. David Alan Gilbert <dgilb...@redhat.com>
---
include/chardev/char.h | 10 ++
hmp.h | 1 +
chardev/char.c
frontends should avoid accessing CharDriver struct where possible
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
include/chard
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/test-char.c | 71 +++
1 file changed, 71 insertions(+)
diff --git a/tests/test-char.c b/tests/test-
device removal.
Yet isa-serial and virtio-serial frontends are supported.
The feature can be helpful for e.g. Windows debug allowing to
establish connection to a live VM from VM with WinDbg.
Anton Nefedov (13):
char: move QemuOpts->ChardevBackend translation to a separate func
char: add back
makes it possible to test the existing chardev-udp
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/test-char.c | 56 +++
1 file changed, 40 inser
On 07/05/2017 06:09 PM, Paolo Bonzini wrote:
On 05/07/2017 16:01, Anton Nefedov wrote:
This patch adds a possibility to change a char device without a frontend
removal.
1. Ideally, it would have to happen transparently to a frontend, i.e.
frontend would continue its regular operation
for a backend change, a number of ioctls has to be replayed to sync
the current setup of a frontend to a backend tty. This is hopefully
enough so we don't have to track, store and replay the whole original
control byte sequence.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Re
parse function will be used by the following patch
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
chardev/char.c | 81 --
1 file changed, 51 insertions(+), 30 deletions(-)
diff --git a/chardev/char.c b/chardev/char.c
Frontends should have an interface to setup the handler of a backend change.
The interface will be used in the next commits
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Reviewed-by: Marc-André Lureau &l
On error path (like i/o error in one of the coroutines), it's required to
- wait for coroutines completion before cleaning the common structures
- reenter dependent coroutines so they ever finish
Introduced in 2d9187bc65.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
On 04/25/2017 12:55 PM, Peter Lieven wrote:
Am 24.04.2017 um 22:13 schrieb Anton Nefedov:
On 24/04/2017 21:16, Peter Lieven wrote:
Am 24.04.2017 um 18:27 schrieb Anton Nefedov
<anton.nefe...@virtuozzo.com>:
On 04/21/2017 03:37 PM, Peter Lieven wrote:
Am 21.04.2017 um 14:19 s
request is in flight
already. Return EAGAIN, let the caller reconsider.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/io.c | 27 +++
1 file changed, 19 insertions(+), 8 deletions(-)
diff --git a/block/io.c b/block/io.c
index 04d495e..0a7a372
The flag is supposed to indicate that the region of the disk image has
to be sufficiently allocated so it reads as zeroes. The call with the flag
set has to return -ENOTSUP if allocation cannot be done efficiently
(i.e. without falling back to writing actual buffers)
Signed-off-by: Anton Nefedov
To be used in the following commit without a forward declaration.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.c | 45 ++---
1 file changed, 22 insertions(+), 23 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
COW (even empty/zero) areas require encryption too
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
tests/qemu-iotests/134 | 9 +
tests/qemu-iotests/134.out | 10 ++
2 files changed, 19 insertions(+)
diff --git a/tests/qemu-iotests/134 b/tests/qemu-iotes
It can be detected that
1. COW alignment of a write request is zeroes
2. Respective areas on the underlying BDS already read as zeroes
after being preallocated previously
If both of these true, COW may be skipped
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
From: "Denis V. Lunev" <d...@openvz.org>
This could be done after calculation of the end of data and metadata in
the qcow2 image.
Signed-off-by: Denis V. Lunev <d...@openvz.org>
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.h |
writes to the same unallocated cluster, which is beneficial
for parallel sequential write operations which are not cluster-aligned
Performance test results are added to commit messages (see patch 3, 12)
Anton Nefedov (12):
mirror: inherit supported write/zero flags
blkverify: set supported
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/mirror.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/block/mirror.c b/block/mirror.c
index d46dace..7e539f1 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -1056,6 +1056,11 @@ stati
Qcow2State and BlockDriverState flags have to be in sync
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/block/qcow2.c b/block/qcow2.c
index 66aa8c2..2a1d2f2 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -
Current write_zeroes implementation is good enough to satisfy this flag too
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/file-posix.c | 8
1 file changed, 8 insertions(+)
diff --git a/block/file-posix.c b/block/file-posix.c
index 765a440..4ef1b1d
Support the flag if the underlying BDS supports it
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/blkdebug.c | 3 ++-
block/blkverify.c | 2 +-
block/mirror.c | 2 +-
block/raw-format.c | 3 ++-
4 files changed, 6 insertions(+), 4 deletions(-)
diff --git a
sters.
Possible conflicts are resolved by the common block layer code since
ALLOCATE requests are serialising.
Signed-off-by: Denis V. Lunev <d...@openvz.org>
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.h |
-alignment areas that were not really COWed are now detected
as zeroes, hence the initial write has to be exactly the same size for
the maps to match
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.c | 22 +-
tests/qemu-iotests/060
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/blkverify.c | 9 +
1 file changed, 9 insertions(+)
diff --git a/block/blkverify.c b/block/blkverify.c
index 06369f9..9ba65d0 100644
--- a/block/blkverify.c
+++ b/block/blkverify.c
@@ -140,6 +140,15 @@ stat
-by: Denis V. Lunev <d...@openvz.org>
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.c | 32
tests/qemu-iotests/026.out | 104 -
tests/qemu-iotes
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
tests/qemu-iotests/190 | 146 +
tests/qemu-iotests/190.out | 50
tests/qemu-iotests/group | 1 +
3 files changed, 197 insertions(+)
create mode 100755 test
On 07/31/2017 10:11 PM, Eric Blake wrote:
On 07/31/2017 11:21 AM, Anton Nefedov wrote:
Support the flag if the underlying BDS supports it
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/blkdebug.c | 3 ++-
block/raw-format.c | 3 ++-
2 files changed, 4 inse
On 07/31/2017 10:13 PM, Eric Blake wrote:
On 07/31/2017 11:22 AM, Anton Nefedov wrote:
To be used in the following commit without a forward declaration.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.c | 39 +++
1 file c
On 08/04/2017 11:00 PM, Eric Blake wrote:
On 08/01/2017 09:19 AM, Anton Nefedov wrote:
Qcow2State and BlockDriverState flags have to be in sync
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2.c | 1 +
1 file changed, 1 insertion(+)
Is this a bug fix
On 08/04/2017 06:23 PM, Eric Blake wrote:
On 08/01/2017 09:18 AM, Anton Nefedov wrote:
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/blkverify.c | 9 +
1 file changed, 9 insertions(+)
Basically, blkverify supports a flag if BOTH of its underlying file
parse function will be used by the following patch
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
chardev/char.c | 81 --
1 file changed, 51 insertions(+), 30 deletions(-)
diff --git a/chardev/char.c b/chardev/char.c
So hotswap also has to be protected so write functions won't access
a backend being replaced.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
include/chardev/char-fe.h | 17 ++
include/chardev/c
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
CC: Dr. David Alan Gilbert <dgilb...@redhat.com>
---
include/chardev/char.h | 10 ++
hmp.h | 1 +
chardev/char.c
makes it possible to test the existing chardev-file
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/test-char.c | 125 ++
1 file changed, 78 inser
frontends should avoid accessing CharDriver struct where possible
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
include/chard
Frontends should have an interface to setup the handler of a backend change.
The interface will be used in the next commits
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Reviewed-by: Marc-André Lureau &l
connection to a live VM from VM with WinDbg.
Anton Nefedov (13):
char: move QemuOpts->ChardevBackend translation to a separate func
char: add backend hotswap handler
char: chardevice hotswap
char: forbid direct chardevice access for hotswap devices
char: avoid chardevice direct access
t
makes it possible to test the existing chardev-udp
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/test-char.c | 57 ++-
1 file changed, 40 inser
qemu_chr_fe_get_driver() is unsafe, frontends with hotswap support
should not access CharDriver ptr directly as CharDriver might change.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
Reviewed-by: Marc-
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/test-char.c | 71 +++
1 file changed, 71 insertions(+)
diff --git a/tests/test-char.c b/tests/test-
this is only not a problem if the test is last in a suite,
otherwise it makes the following main_loop() calls to fail
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
tests/test-char.c | 2 ++
1 file changed,
for a backend change, a number of ioctls has to be replayed to sync
the current setup of a frontend to a backend tty. This is hopefully
enough so we don't have to track, store and replay the whole original
control byte sequence.
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Re
will be used by the following patch
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
CC: Michael S. Tsirkin <m...@redhat.com>
CC: Paolo Bonzini <pbonz...@redhat.com>
Reviewed-by: Marc-And
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
CC: Amit Shah <a...@kernel.org>
---
hw/char/virtio-console.c | 35 ++-
1 file changed, 30 insertions(+), 5 deletions(-
quential write:
seqwrite 4k, size=4g, iodepth=4
SSD : 7000 -> 18000 IOPS ( x2.6 )
- numbers are similar to qemu-io tests, slightly less improvement
(damped by fs?)
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Signed-off-by: Denis V. Lunev <d
to commit messages (see patch 3, 12)
Anton Nefedov (9):
qcow2: is_zero_sectors(): return true if area is outside of backing
file
qcow2: do not COW the empty areas
qcow2: set inactive flag
qcow2: handle_prealloc(): find out if area zeroed by earlier
preallocation
qcow2: fix misleading
<d...@openvz.org>
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
block/qcow2-cache.c| 3 +
block/qcow2-cluster.c | 5 ++
block/qcow2-refcount.c | 14 +
block/qcow2.c | 151 +
block/qcow2.h |
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Signed-off-by: Denis V. Lunev <d...@openvz.org>
---
block/qcow2-cluster.c | 10 --
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 25210cd..42
to
unallocated clusters with no backing data:
HDD fio over xfs iodepth=4:
seqwrite 4k: 18400 -> 22800 IOPS ( x1.24 )
seqwrite 68k: 1600 -> 2300 IOPS ( x1.44 )
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
Signed-off-by: Denis V. Lunev <d...@openvz.org>
---
block/qco
Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com>
---
tests/qemu-iotests/046 | 38 +-
tests/qemu-iotests/046.out | 23 +++
2 files changed, 60 insertions(+), 1 deletion(-)
diff --git a/tests/qemu-iotests/046 b/test
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