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# Date Author Comment
6d1acda8 02/09/2012 05:17 pm MORITA Kazutaka

sheepdog: fix co_recv coroutine context

The co_recv coroutine has two things that will try to enter it:

1. The select(2) read callback on the sheepdog socket.
  2. The aio_add_request() blocking operations, including a coroutine
     mutex.

This patch fixes it by setting NULL to co_recv before sending data....
6b620ca3 01/13/2012 06:55 pm Paolo Bonzini

prepare for future GPLv2+ relicensing

All files under GPLv2 will get GPLv2+ changes starting tomorrow.
event_notifier.c and exec-obsolete.h were only ever touched by Red Hat
employees and can be relicensed now.

Signed-off-by: Paolo Bonzini <>...
128aa589 12/22/2011 12:53 pm Paolo Bonzini

move corking functions to osdep.c

Signed-off-by: Paolo Bonzini <>
8c5135f9 12/22/2011 12:53 pm Paolo Bonzini

sheepdog: move coroutine send/recv function to generic code

Outside coroutines, avoid busy waiting on EAGAIN by temporarily
making the socket blocking.

The API of qemu_recvv/qemu_sendv is slightly different from
do_readv/do_writev because they do not handle coroutines. It...
a968168c 12/05/2011 03:51 pm Dong Xu Wang

block: Add coroutine_fn marker to coroutine functions

Looks better when reviewing these source files.

Signed-off-by: Dong Xu Wang <>
Reviewed-by: Stefan Hajnoczi <>
Signed-off-by: Kevin Wolf <>
c3fecea5 11/22/2011 11:33 am Dong Xu Wang

sheepdog: Avoid deadlock in error path

s->lock should be unlocked before leaving add_aio_request.

Signed-off-by: Dong Xu Wang <>
Signed-off-by: Kevin Wolf <>
d8716b41 10/21/2011 06:34 pm Paolo Bonzini

sheepdog: add coroutine_fn markers

This makes the following patch easier to review.

Cc: MORITA Kazutaka <>
Signed-off-by: Paolo Bonzini <>
Signed-off-by: Kevin Wolf <>
7acae208 10/14/2011 04:46 pm Dong Xu Wang

sheepdog: correct spelling

Reviewed-by: Andreas Färber <>
Signed-off-by: Dong Xu Wang <>
Signed-off-by: Stefan Hajnoczi <>
2df46246 08/24/2011 03:53 pm MORITA Kazutaka

sheepdog: use coroutines

This makes the sheepdog block driver support bdrv_co_readv/writev
instead of bdrv_aio_readv/writev.

With this patch, Sheepdog network I/O becomes fully asynchronous. The
block driver yields back when send/recv returns EAGAIN, and is resumed...
7267c094 08/21/2011 07:01 am Anthony Liguori

Use glib memory allocation and free functions

qemu_malloc/qemu_free no longer exist after this commit.

Signed-off-by: Anthony Liguori <>
00aa0040 07/25/2011 05:38 pm Blue Swirl

Wrap recv to avoid warnings

Avoid warnings like these by wrapping recv():
CC slirp/ip_icmp.o
/src/qemu/slirp/ip_icmp.c: In function 'icmp_receive':
/src/qemu/slirp/ip_icmp.c:418:5: error: passing argument 2 of 'recv' from incompatible pointer type [-Werror]...
a8e0fdd7 07/18/2011 05:06 pm MORITA Kazutaka

sheepdog: add full data preallocation support

This introduces qemu-img create option for sheepdog which allows the
data to be fully preallocated (note that sheepdog always preallocates
metadata).

The option is disabled by default and you need to enable it like the...
db78ef5b 06/24/2011 11:13 am Markus Armbruster

sheepdog: qemu_bh_new() can't return null pointer, drop check

Signed-off-by: Markus Armbruster <>
Signed-off-by: Stefan Hajnoczi <>
6daf194d 06/24/2011 11:13 am Markus Armbruster

Strip trailing '\n' from error_report()'s first argument

error_report() prepends location, and appends a newline. The message
constructed from the arguments should not contain a newline. Fix the
obvious offenders.

Signed-off-by: Markus Armbruster <>...
ebabb67a 05/06/2011 10:19 am Stefan Weil

Fix typo in code and comments

Replace writeable -> writable

Signed-off-by: Stefan Weil <>
Signed-off-by: Stefan Hajnoczi <>
8cffde73 04/01/2011 11:23 pm Michael Tokarev

get rid of private bitmap functions in block/sheepdog.c, use generic ones

qemu now has generic bitmap functions,
so don't redefine them in sheepdog.c,
use common header instead. A small cleanup.

Here's only one function which is actually
used in sheepdog and gets replaced with...
b4447363 01/31/2011 11:03 am MORITA Kazutaka

sheepdog: support creating images on remote hosts

This patch parses the input filename in sd_create(), and enables us
specifying a target server to create sheepdog images.

Signed-off-by: MORITA Kazutaka <>
Signed-off-by: Kevin Wolf <>
010cb2b3 08/30/2010 07:29 pm Izumi Tsutsui

sheepdog: remove unnecessary includes

"qemu_socket.h" includes all necessary files and
including <netinet/tcp.h> without <netinet/in.h>
could cause errors on some systems.

Signed-off-by: Izumi Tsutsui <>
Signed-off-by: Kevin Wolf <>
6defcc37 07/07/2010 08:54 pm MORITA Kazutaka

sheepdog: fix compile error on systems without TCP_CORK

WIN32 is not only the system which doesn't have TCP_CORK (e.g. OS X).

Signed-off-by: MORITA Kazutaka <>
Signed-off-by: Blue Swirl <>
33b1db1c 07/06/2010 06:05 pm MORITA Kazutaka

block: add sheepdog driver for distributed storage support

Sheepdog is a distributed storage system for QEMU. It provides highly
available block level storage volumes to VMs like Amazon EBS. This
patch adds a qemu block driver for Sheepdog.

Sheepdog features are:...