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Re: [Qemu-devel] Problem to start VM with libiscsi + qemu upstream
From: |
Fam Zheng |
Subject: |
Re: [Qemu-devel] Problem to start VM with libiscsi + qemu upstream |
Date: |
Wed, 3 Jan 2018 10:12:48 +0800 |
User-agent: |
Mutt/1.9.1 (2017-09-22) |
On Tue, 01/02 21:58, Roy Shterman wrote:
> Hi all,
>
> I'm trying to get VM started with libiscsi (iSCSI initiator) device. Every
> thing seems good from iSCSI point of view, but I'm stuck in VM boot,
> "Booting from Hard Disk".
> Any idea what can get wrong? how I can assure that the boot itself is from
> the wanted disk.
> Also will be helpful if someone can tell me how can I debug issues like
> that.
Do you still hit the hang if you remove the iscsi lun and only have the system
disk?
>
> below my xml part of disks:
>
> <domain type='kvm'>
> <name>client</name>
> <uuid>d4e60885-22be-4270-94ca-1be8209686d2</uuid>
> <memory unit='KiB'>1048576</memory>
> <currentMemory unit='KiB'>1048576</currentMemory>
> <vcpu placement='static'>1</vcpu>
> <os>
> <type arch='x86_64' machine='pc-i440fx-2.7'>hvm</type>
> <bootmenu enable='yes'/>
> </os>
> <features>
> <acpi/>
> <apic/>
> <vmport state='off'/>
> </features>
> <cpu mode='host-model' check='partial'>
> <model fallback='allow'/>
> </cpu>
> <clock offset='utc'>
> <timer name='rtc' tickpolicy='catchup'/>
> <timer name='pit' tickpolicy='delay'/>
> <timer name='hpet' present='no'/>
> </clock>
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> <on_crash>restart</on_crash>
> <devices>
> <emulator>/usr/bin/qemu-system-x86_64</emulator>
> <disk type='file' device='disk'>
> <driver name='qemu' type='qcow2'/>
> <source file='/var/lib/libvirt/images/4.7-rc2_client.qcow2'/>
> <target dev='vda' bus='virtio'/>
> <boot order='1'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x07'
> function='0x0'/>
> </disk>
> <disk type='network' device='disk'>
> <driver name='qemu' type='raw'/>
> <source protocol='iscsi' name='iqn.2001-04.com.client-tgt-1/0'>
> <host name='192.168.64.75' port='3260'/>
> </source>
> <target dev='vdb' bus='virtio'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x06'
> function='0x0'/>
My wild guess is this disk's PCI addr is lower than the system disk. Can you
swap "slot='0x06'" with the previous "slot='0x07'" and try again?
(Stuck may be from an unfunctional MBR in the iscsi lun?)
Fam
> </disk>
> <controller type='pci' index='0' model='pci-root'/>
> <controller type='usb' index='0' model='piix3-uhci'>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
> function='0x2'/>
> </controller>
> <controller type='scsi' index='0'>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
> function='0x0'/>
> </controller>
> <interface type='bridge'>
> <mac address='52:54:00:bf:6c:56'/>
> <source bridge='br0'/>
> <model type='virtio'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
> function='0x0'/>
> </interface>
>
> Thanks,
> Roy