Hi paolo, The vhost-scsi device can be used as boot device? I tested with your config + 3.10 rc6 + seabios 1.7.2.2,but failed. Could you give me some advise to debug this problem ? I can provide more information if need.
Regards, baiqing > -----Original Message----- > From: qemu-devel-bounces+libaiqing=huawei....@nongnu.org > [mailto:qemu-devel-bounces+libaiqing=huawei....@nongnu.org] On > Behalf Of Paolo Bonzini > Sent: Tuesday, May 28, 2013 4:01 PM > To: Wenchao Xia > Cc: as...@redhat.com; qemu-devel@nongnu.org; n...@linux-iscsi.org; > Michael S. Tsirkin > Subject: Re: [Qemu-devel] [PATCH 6/9] vhost-scsi: new device supporting the > tcm_vhost Linux kernel module > > Il 28/05/2013 09:13, Wenchao Xia ha scritto: > >> > From: Nicholas Bellinger <n...@linux-iscsi.org> > >> > > >> > The WWPN specified in configfs is passed to "-device vhost-scsi-pci". > >> > The tgpt field of the SET_ENDPOINT ioctl is obsolete now, so it is not > >> > available from the QEMU command-line. Instead, I hardcode it to > zero. > >> > > > Hi, Paolo > > Any document about how to config it correctly in configfs, before > > invoking qemu with the WWPN number? > > Unfortunately no, but vhost-scsi doesn't have many knobs (unlike > iSCSI for example) so it's quite simple. Here is an example: > > cd /sys/kernel/config/target > mkdir -p core/fileio_0/fileio > echo 'fd_dev_name=/home/pbonzini/test.img,fd_dev_size=5905580032' > > core/fileio_0/fileio/control > echo 1 > core/fileio_0/fileio/enable > mkdir -p vhost/naa.600140554cf3a18e/tpgt_0/lun/lun_0 > cd vhost/naa.600140554cf3a18e/tpgt_0 > ln -sf ../../../../../core/fileio_0/fileio/ lun/lun_0/virtual_scsi_port > echo naa.60014053226f0388 > nexus > > The "nexus" value is the initiator WWN. naa.600140554cf3a18e is the > target WWN that you have to pass to "-device vhost-scsi-pci". > > Paolo
