On Wed 22 Aug 2012 10:13:44 PM CST, Paolo Bonzini wrote:
Il 22/08/2012 15:13, Stefan Hajnoczi ha scritto:
http://lists.gnu.org/archive/html/qemu-devel/2010-12/msg01741.html
"This is a real problem in practice. IE. the USB CD-ROM on this POWER7
blade limits transfers to 0x1e000 bytes for examp
On 08/21/2012 06:14 PM, Paolo Bonzini wrote:
Il 21/08/2012 11:52, Stefan Hajnoczi ha scritto:
Using /sys/dev/block or /sys/dev/char seems easier, and lets you
retrieve the parameters for block devices too.
what do you mean with "block devices"? Using "/dev/sda" instead of
"/dev/sg0"?
Yes
On Tue 21 Aug 2012 04:53:59 PM CST, Stefan Hajnoczi wrote:
On Tue, Aug 21, 2012 at 9:26 AM, Cong Meng wrote:
Each virtio scsi HBA has global request queue limits. But the passthrough
LUNs (scsi-generic) come from different host HBAs may have different request
queue limits. If the guest sends
On Tue 21 Aug 2012 04:48:17 PM CST, Paolo Bonzini wrote:
Il 21/08/2012 10:23, Cong Meng ha scritto:
+static void sg_get_queue_limits(BlockDriverState *bs, const char *filename)
+{
+DIR *ffs;
+struct dirent *d;
+char path[MAXPATHLEN];
+
+snprintf(path, MAXPATHLEN
by getting the per-LUN queue limits via the the
newly added virtio control request, then setting them properly.
Signed-off-by: Cong Meng
---
drivers/scsi/virtio_scsi.c | 113 +--
include/linux/virtio_scsi.h | 18 +++
2 files changed, 116 insertions
patch responses the newly added virtio control
queue request by returning the per-LUN queue limits.
Signed-off-by: Cong Meng
---
hw/virtio-scsi.c | 65 ++
1 files changed, 65 insertions(+), 0 deletions(-)
diff --git a/hw/virtio-scsi.c b/hw/virtio
This patch adds some queue limit parameters into block drive. And inits them
for sg block drive. Some interfaces are also added for accessing them.
Signed-off-by: Cong Meng
---
block/raw-posix.c | 58 +
block_int.h |4
patch adds a per-LUN parameter query via the control
queue, and defines some parameter query types. The driver can query and set the
needed per-LUN parameters if the device enables this feature.
Signed-off-by: Cong Meng
--
virtio-spec.lyx | 218
fix
v4: Cancel event works when exit. Coding type fix.
Signed-off-by: Sen Wang
Signed-off-by: Cong Meng
---
drivers/scsi/virtio_scsi.c | 127 ++-
include/linux/virtio_scsi.h |9 +++
2 files changed, 135 insertions(+), 1 deletions(-)
diff --git a
fix
Signed-off-by: Sen Wang
Signed-off-by: Cong Meng
---
drivers/scsi/virtio_scsi.c | 113 ++-
include/linux/virtio_scsi.h |9
2 files changed, 121 insertions(+), 1 deletions(-)
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi
This patch implements the hotplug support for virtio-scsi.
When there is a device attached/detached, the virtio-scsi driver will be
signaled via event virtual queue and it will add/remove the scsi device
in question automatically.
v2: handle no_event event
Signed-off-by: Cong Meng
Signed-off
Add two interfaces hotplug() and hot_unplug() to scsi bus info.
The embody scsi bus can implement these two interfaces to signal the HBA driver
of guest kernel to add/remove the scsi device in question.
Signed-off-by: Cong Meng
Signed-off-by: Sen Wang
---
hw/scsi-bus.c | 16
Implement the hotplug() and hot_unplug() interfaces in virtio-scsi, by signal
the virtio_scsi.ko in guest kernel via event virtual queue.
The counterpart patch of virtio_scsi.ko will be sent soon in another thread.
Signed-off-by: Cong Meng
Signed-off-by: Sen Wang
---
hw/virtio-scsi.c | 72
Add two interfaces hotplug() and hot_unplug() to scsi bus info.
The embody scsi bus can implement these two interfaces to signal the HBA driver
of guest kernel to add/remove the scsi device in question.
Signed-off-by: Cong Meng
Signed-off-by: Sen Wang
---
hw/scsi-bus.c | 16
These patches implement the hotplug support for virtio-scsi.
When a new device attaches/detaches to virtio-scsi bus via device_add/device_del
commands, the HBA driver in guest kernel will be signaled to add/remove the scsi
device.
Cong Meng (2):
scsi bus: introduce hotplug() and hot_unplug
This patch implements the hotplug support for virtio-scsi.
When there is a device attached/detached, the virtio-scsi driver will be
signaled via event virtual queue and it will add/remove the scsi device
in question automatically.
Signed-off-by: Cong Meng
Signed-off-by: Sen Wang
---
drivers
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