# Strange/wrong behavior in QEMU 2.8.0-rc4
After update from QEMU 2.6.2 to 2.8.0-rc4 the tape devices
and the corresponding medium changer are no longer available
in the VM quest system.
The tape devices and the media changer are declared in the
xml-file for libvirt. Both, tape drives and medium changer
are avalilable via iSCSI.
In a first rough investigation the login in iSCSI runs well
but in QEMU, it seems the devices doesn't reported to the VM-Quest.
------------------
Best regards
Holger
=====================================================================
XML-Declration:
.
.
.
<!-- SCSI 2 -->
<controller type='scsi' model='virtio-scsi' index='1'>
<alias name='scsi1'/>
</controller>
<!-- 2 x LTO5 -->
<hostdev mode='subsystem' type='scsi' managed='no' rawio='yes'>
<source protocol='iscsi'
name='iqn.2008-09.net.fsc:server.LT260_61003/4'>
<host name='etcsvms2.abg.fsc.net' port='3260'/>
</source>
<address type='drive' controller='1' bus='0' target='2' unit='1'/>
</hostdev>
<hostdev mode='subsystem' type='scsi' managed='no' rawio='yes'>
<source protocol='iscsi'
name='iqn.2008-09.net.fsc:server.LT260_61003/5'>
<host name='etcsvms2.abg.fsc.net' port='3260'/>
</source>
<address type='drive' controller='1' bus='0' target='2' unit='2'/>
</hostdev>
<!-- Virtual media changer Fujitsu LT260 -->
<hostdev mode='subsystem' type='scsi' managed='no' rawio='yes'>
<source protocol='iscsi'
name='iqn.2008-09.net.fsc:server.LT260_61003/6'>
<host name='etcsvms2.abg.fsc.net' port='3260'/>
</source>
<address type='drive' controller='1' bus='0' target='2' unit='3'/>
</hostdev>
<!-- 2 x LTO6 (via PLP(LAN-attached library)) -->
<hostdev mode='subsystem' type='scsi' managed='no' rawio='yes'>
<source protocol='iscsi'
name='iqn.2008-09.net.fsc:server.LT60_61005/3'>
<host name='etcsvms2.abg.fsc.net' port='3260'/>
</source>
<address type='drive' controller='1' bus='0' target='2' unit='4'/>
</hostdev>
<hostdev mode='subsystem' type='scsi' managed='no' rawio='yes'>
<source protocol='iscsi'
name='iqn.2008-09.net.fsc:server.LT60_61005/4'>
<host name='etcsvms2.abg.fsc.net' port='3260'/>
</source>
<address type='drive' controller='1' bus='0' target='2' unit='5'/>
</hostdev>
.
.
.
===============================================================================
correct behavior/Result inside the VM-Quest together with QEMU/KVM 2.6.2
/ 2.7.0
--
(VCSTCS82:A)IUP1:~ # lsscsi -g
[0:2:0:0] disk FTS PRAID EP420i 4.25 /dev/sda /dev/sg0
[3:0:0:0] cd/dvd QEMU QEMU DVD-ROM 2.5+ /dev/sr0 /dev/sg1
[8:0:2:1] tape HP Ultrium 5-SCSI 0001 /dev/st3 /dev/sg6
[8:0:2:2] tape HP Ultrium 5-SCSI 0001 /dev/st2 /dev/sg5
[8:0:2:3] mediumx FUJITSU ETERNUS LT260 6.20 - /dev/sg4
[8:0:2:4] tape HP Ultrium 6-SCSI 23AB /dev/st1 /dev/sg3
[8:0:2:5] tape HP Ultrium 6-SCSI 23AB /dev/st0 /dev/sg2
[11:0:0:0] disk FUJITSU ETERNUS_DXL 0000 /dev/sdb /dev/sg7
[11:0:0:2] disk FUJITSU ETERNUS_DXL 0000 /dev/sdh /dev/sg13
[11:0:0:3] disk FUJITSU ETERNUS_DXL 0000 /dev/sdg /dev/sg12
[11:0:0:4] disk FUJITSU ETERNUS_DXL 0000 /dev/sdf /dev/sg11
[11:0:0:5] disk FUJITSU ETERNUS_DXL 0000 /dev/sde /dev/sg10
[11:0:0:6] disk FUJITSU ETERNUS_DXL 0000 /dev/sdd /dev/sg9
[11:0:0:7] disk FUJITSU ETERNUS_DXL 0000 /dev/sdc /dev/sg8
[11:0:0:15] disk FUJITSU ETERNUS_DXL 0000 /dev/sdi /dev/sg14
(VCSTCS82:A)IUP1:~ #
Wrong behavior/Result inside the VM-Quest together with QEMU/KVM 2.8.0-RC4
--
(VCSTCS82:A)IUP1:~ # lsscsi -g
[0:2:0:0] disk FTS PRAID EP420i 4.25 /dev/sda /dev/sg0
[3:0:0:0] cd/dvd QEMU QEMU DVD-ROM 2.5+ /dev/sr0 /dev/sg1
[11:0:1:0] disk FUJITSU ETERNUS_DXL 0000 /dev/sdj /dev/sg10
[11:0:1:2] disk FUJITSU ETERNUS_DXL 0000 /dev/sdp /dev/sg16
[11:0:1:3] disk FUJITSU ETERNUS_DXL 0000 /dev/sdo /dev/sg15
[11:0:1:4] disk FUJITSU ETERNUS_DXL 0000 /dev/sdn /dev/sg14
[11:0:1:5] disk FUJITSU ETERNUS_DXL 0000 /dev/sdm /dev/sg13
[11:0:1:6] disk FUJITSU ETERNUS_DXL 0000 /dev/sdl /dev/sg12
[11:0:1:7] disk FUJITSU ETERNUS_DXL 0000 /dev/sdk /dev/sg11
[11:0:1:15] disk FUJITSU ETERNUS_DXL 0000 /dev/sdq /dev/sg17
(VCSTCS82:A)IUP1:~ #
