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# Date Author Comment
23797df3 07/09/2012 08:35 pm Anthony Liguori

Merge remote-tracking branch 'mjt/mjt-iov2' into staging

  • mjt/mjt-iov2:
    rewrite iov_send_recv() and move it to iov.c
    cleanup qemu_co_sendv(), qemu_co_recvv() and friends
    export iov_send_recv() and use it in iov_send() and iov_recv()
    rename qemu_sendv to iov_send, change proto and move declarations to iov.h...
98392453 07/02/2012 11:18 am Ronnie Sahlberg

ISCSI: Add SCSI passthrough via scsi-generic to libiscsi

Update iscsi to allow passthrough of SG_IO scsi commands when the iscsi
device is forced to be scsi-generic.

Implement both bdrv_ioctl() and bdrv_aio_ioctl() in the iscsi backend,
emulate the SG_IO ioctl and pass the SCSI commands across to the...
622695a4 07/02/2012 11:18 am Ronnie Sahlberg

ISCSI: force use of sg for SMC and SSC devices

If the device we open is a SMC or SSC device, then force the use of sg. We
dont have any medium changer or tape emulation so only passthrough via
real sg or scsi-generic via iscsi would work anyway.

Forcing sg also makes qemu skip trying to read from the device to guess...
d5e6b161 06/11/2012 10:12 pm Michael Tokarev

change qemu_iovec_to_buf() to match other to,from_buf functions

It now allows specifying offset within qiov to start from and
amount of bytes to copy. Actual implementation is just a call
to iov_to_buf().

Signed-off-by: Michael Tokarev <>
f4dfa67f 05/28/2012 03:04 pm Ronnie Sahlberg

ISCSI: Switch to using READ16/WRITE16 for I/O to the LUN

This allows using LUNs bigger than 2TB. Keep using READ10 for other
device types such as MMC.

Signed-off-by: Ronnie Sahlberg <>
6bcd1346 05/28/2012 03:04 pm Ronnie Sahlberg

ISCSI: Only call READCAPACITY16 for SBC devices, use READCAPACITY10 for MMC

Signed-off-by: Ronnie Sahlberg <>
c7b4a952 05/28/2012 03:04 pm Paolo Bonzini

ISCSI: change num_blocks to 64-bit

Signed-off-by: Paolo Bonzini <>
dbfff6d7 05/28/2012 03:04 pm Ronnie Sahlberg

ISCSI: get device type at connection time

This is needed to avoid READ CAPACITY for MMC devices.

Signed-off-by: Ronnie Sahlberg <>
Signed-off-by: Paolo Bonzini <>
c9b9f682 05/28/2012 03:04 pm Ronnie Sahlberg

ISCSI: redo how we set up the events

Call qemu_notify_event() after updating events. Otherwise, If we add
an event for -is-writeable but the socket is already writeable there
may be a delay before the event callback is actually triggered.

Those delays would in particular hurt performance during BIOS boot and...
fa6acb0c 05/04/2012 11:39 am Ronnie Sahlberg

ISCSI: Add support for thin-provisioning via discard/UNMAP and bigger LUNs

Update the configure test for libiscsi support to detect version 1.3
or later. Version 1.3 of libiscsi provides both READCAPACITY16 as well
as UNMAP commands.

Update the iscsi block layer to use READCAPACITY16 to detect the size of...
bafbd6a1 04/19/2012 05:37 pm Paolo Bonzini

aio: remove process_queue callback and qemu_aio_process_queue

Both unused after the previous patch.

Signed-off-by: Paolo Bonzini <>
Signed-off-by: Kevin Wolf <>
f9dadc98 02/09/2012 05:17 pm Ronnie Sahlberg

iSCSI: add configuration variables for iSCSI

This patch adds configuration variables for iSCSI to set
initiator-name to use when logging in to the target,
which type of header-digest to negotiate with the target
and username and password for CHAP authentication....
c589b249 10/28/2011 08:25 pm Ronnie Sahlberg

iSCSI block driver

This provides built-in support for iSCSI to QEMU.

This has the advantage that the iSCSI devices need not be made visible to the host, which is useful if you have very many virtual machines and very many iscsi devices.
It also has the benefit that non-root users of QEMU can access iSCSI devices across the network without requiring root privilege on the host....