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root / block @ dc7588c1

Name Size
Makefile.objs 832 Bytes
blkdebug.c 15.8 kB
blkverify.c 10.1 kB
bochs.c 7.1 kB
cloop.c 5.9 kB
commit.c 7.3 kB
cow.c 9.5 kB
curl.c 16.8 kB
dmg.c 10.3 kB
gluster.c 17.1 kB
iscsi.c 34.4 kB
linux-aio.c 5.5 kB
mirror.c 18.7 kB
nbd.c 18.4 kB
parallels.c 4.8 kB
qcow.c 27.2 kB
qcow2-cache.c 7.8 kB
qcow2-cluster.c 43.2 kB
qcow2-refcount.c 41.3 kB
qcow2-snapshot.c 18.6 kB
qcow2.c 51.9 kB
qcow2.h 12.2 kB
qed-check.c 6.5 kB
qed-cluster.c 5.1 kB
qed-gencb.c 688 Bytes
qed-l2-cache.c 5.9 kB
qed-table.c 8.4 kB
qed.c 46 kB
qed.h 10.8 kB
raw-aio.h 1.6 kB
raw-posix.c 49.1 kB
raw-win32.c 15.8 kB
raw.c 3.9 kB
rbd.c 25.4 kB
sheepdog.c 57 kB
ssh.c 28.8 kB
stream.c 6.7 kB
vdi.c 24.7 kB
vmdk.c 49.4 kB
vpc.c 23.3 kB
vvfat.c 81.6 kB
win32-aio.c 5.9 kB

Latest revisions

# Date Author Comment
0a12ec87 04/15/2013 11:18 am Richard W.M. Jones

block: Add support for Secure Shell (ssh) block device.

qemu-system-x86_64 -drive file=ssh://hostname/some/image

QEMU will ssh into 'hostname' and open '/some/image' which is made
available as a standard block device.

You can specify a username (ssh://user@host/...) and/or a port number...
9a2d462e 04/15/2013 11:18 am Richard W.M. Jones

block: ssh: Use libssh2_sftp_fsync (if supported by libssh2) to flush to disk.

libssh2_sftp_fsync is an extension to libssh2 to support fsync(2) over
sftp, which is itself an extension of OpenSSH.

If both libssh2 and the ssh daemon support it, this will allow...
dc7588c1 04/15/2013 11:18 am Josh Durgin

rbd: add an asynchronous flush

The existing bdrv_co_flush_to_disk implementation uses rbd_flush(),
which is sychronous and causes the main qemu thread to block until it
is complete. This results in unresponsiveness and extra latency for
the guest.

Fix this by using an asynchronous version of flush. This was added to...
cf8074b3 04/15/2013 09:26 am Kevin Wolf

block: Introduce bdrv_writev_vmstate

Signed-off-by: Kevin Wolf <>
Signed-off-by: Stefan Hajnoczi <>
8d3b1a2d 04/15/2013 09:26 am Kevin Wolf

block: Introduce bdrv_pwritev() for qcow2_save_vmstate

Directly pass the QEMUIOVector on instead of linearising it.

Signed-off-by: Kevin Wolf <>
Signed-off-by: Stefan Hajnoczi <>
753d9b82 04/13/2013 02:51 pm Aurelien Jarno

aes: move aes.h from include/block to include/qemu

Move aes.h from include/block to include/qemu to show it can be reused
by other subsystems.

Cc: Kevin Wolf <>
Reviewed-by: Stefan Hajnoczi <>
Reviewed-by: Edgar E. Iglesias <>...
0d09e41a 04/08/2013 07:13 pm Paolo Bonzini

hw: move headers to include/

Many of these should be cleaned up with proper qdev-/QOM-ification.
Right now there are many catch-all headers in include/hw/ARCH depending
on cpu.h, and this makes it necessary to compile these files per-target.
However, fixing this does not belong in these patches....
c2bc78b6 04/05/2013 07:58 pm Kevin Wolf

qcow2: Return real error in qcow2_update_snapshot_refcount

This fixes the error message triggered by the following script:

cat > /tmp/blkdebug.cfg <&lt;EOF
    [inject-error]
    event = "cluster_free" 
    errno = "28" 
    immediately = "off" 
    EOF
$qemu_img create -f qcow2 test.qcow2 10G...
c2b6ff51 04/05/2013 07:58 pm Kevin Wolf

qcow2: Fix L1 write error handling in qcow2_update_snapshot_refcount

It ignored the error code, and at least the 'goto fail' is obvious
nonsense as it creates an endless loop (if the next attempt doesn't
magically succeed) and leaves the in-memory L1 table in big-endian...
f9e8cacc 04/02/2013 06:47 pm Stefan Hajnoczi

oslib-posix: rename socket_set_nonblock() to qemu_set_nonblock()

The fcntl(fd, F_SETFL, O_NONBLOCK) flag is not specific to sockets.
Rename to qemu_set_nonblock() just like qemu_set_cloexec().

Signed-off-by: Stefan Hajnoczi <>
Reviewed-by: Eric Blake <>...

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