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* [Qemu-devel] Strange/wrong behavior with iSCSI Tape devices in QEMU 2.8.0-rc4
@ 2016-12-19  9:05 Holger Schranz
  2016-12-19 17:30 ` John Snow
  0 siblings, 1 reply; 12+ messages in thread
From: Holger Schranz @ 2016-12-19  9:05 UTC (permalink / raw)
  To: qemu-devel; +Cc: mueller-ralf

# 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:~ #

^ permalink raw reply	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2016-12-22 18:22 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-12-19  9:05 [Qemu-devel] Strange/wrong behavior with iSCSI Tape devices in QEMU 2.8.0-rc4 Holger Schranz
2016-12-19 17:30 ` John Snow
2016-12-20 16:53   ` Holger Schranz
2016-12-20 23:47     ` Fam Zheng
2016-12-21  4:44       ` Holger Schranz
2016-12-21 11:51         ` Holger Schranz
2016-12-21 12:39           ` Holger Schranz
2016-12-22  6:22         ` Fam Zheng
2016-12-22 12:33           ` Holger Schranz
2016-12-22 13:06             ` Fam Zheng
2016-12-22 16:47             ` Paolo Bonzini
2016-12-22 18:21               ` Holger Schranz

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