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Bug 1163553 - Improve error when start a guest with iscsi disk which port = -1
Summary: Improve error when start a guest with iscsi disk which port = -1
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libvirt
Version: 7.1
Hardware: x86_64
OS: Linux
low
low
Target Milestone: rc
: ---
Assignee: Erik Skultety
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-11-13 02:34 UTC by Luyao Huang
Modified: 2015-11-19 05:55 UTC (History)
6 users (show)

Fixed In Version: libvirt-1.2.14-1.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-11-19 05:55:43 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:2202 0 normal SHIPPED_LIVE libvirt bug fix and enhancement update 2015-11-19 08:17:58 UTC

Description Luyao Huang 2014-11-13 02:34:46 UTC 
Description of problem:
Improve error when start a guest with iscsi disk which port = -1

version:
libvirt-1.2.8-6.el7.x86_64

How reproducible:
100%

Step to reproduce:
1.# virsh dumpxml test3
<disk type='network' device='lun'>
      <driver name='qemu' type='raw' cache='none'/>
      <source protocol='iscsi' name='iqn.2003-01.org.linux-iscsi.test1.x8664:sn.05011d8e73cb/0'>
        <host name='10.66.6.12' port='-1'/>
      </source>
      <target dev='sda' bus='scsi'/>
      <address type='drive' controller='0' bus='0' target='1' unit='0'/>
    </disk>

2.# virsh start test3
error: Failed to start domain test3
error: An error occurred, but the cause is unknown

Actual results:
An error occurred, but the cause is unknown

Expected results:
error: Failed to start domain r6
error: internal error: failed to parse port number '-1'


Additional info:
Comment 4 Erik Skultety 2015-03-24 11:36:53 UTC 
commit 84646165262de4fcdfca49e9e9198fa7b26edea6
Author: Erik Skultety <eskultet>
Date:   Thu Feb 19 16:53:13 2015 +0100

    qemu: Check for negative port values in network drive configuration
    
    We interpret port values as signed int (convert them from char *),
    so if a negative value is provided in network disk's configuration,
    we accept it as valid, however there's an 'unknown cause' error raised later.
    This error is only accidental because we return the port value in the return code.
    This patch adds just a minor tweak to the already existing check so we
    reject negative values the same way as we reject non-numerical strings.

v1.2.13-174-g8464616
Comment 6 yisun 2015-06-03 10:23:55 UTC 
Versions:
libvirt-1.2.15-2.el7.x86_64

verify steps:
1. check #virsh edit
1.1 #virsh edit vv
...
    <disk type='network' device='lun'>
      <driver name='qemu' type='raw' cache='none'/>
      <source protocol='iscsi' name='lento.com:luns'>
        <host name='localhost' port='-100'/>      <===== edit the vm's xml and use a negative value as iscsi port
      </source>
      <target dev='sda' bus='scsi'/>
      <address type='drive' controller='0' bus='0' target='1' unit='0'/>
    </disk>
1.2 try to quit and save
# virsh edit vv
error: XML document failed to validate against schema: Unable to validate doc against /usr/share/libvirt/schemas/domain.rng
Extra element devices in interleave
Element domain failed to validate content

Failed. Try again? [y,n,i,f,?]:
1.3 input i to ignore the error
1.4 try to start the vm
# virsh start vv
error: Failed to start domain vv
error: internal error: failed to parse port number '-100'


2. check #virsh create
2.1 cat test.xml
# cat ~/test.xml
<domain type='kvm'>
  <name>vgv</name>
  <uuid>bb4285a4-e58d-411b-8654-a7bc632ac945</uuid>
  <memory unit='KiB'>1048576</memory>
  <currentMemory unit='KiB'>1048576</currentMemory>
  <vcpu placement='static'>1</vcpu>
  <os>
    <type arch='x86_64' machine='pc-i440fx-rhel7.2.0'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <cpu mode='custom' match='exact'>
    <model fallback='allow'>SandyBridge</model>
  </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>
  <pm>
    <suspend-to-mem enabled='no'/>
    <suspend-to-disk enabled='no'/>
  </pm>
  <devices>
    <emulator>/usr/libexec/qemu-kvm</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/var/lib/libvirt/images/rhel7.0.qcow2'/>
      <target dev='vda' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </disk>
    <disk type='network' device='lun'>
      <driver name='qemu' type='raw' cache='none'/>
      <source protocol='iscsi' name='iqn.2003-01.org.linux-iscsi.test1.x8664:sn.05011d8e73cb/0'>
        <host name='10.66.6.12' port='-100'/>
      </source>
      <target dev='sda' bus='scsi'/>
      <address type='drive' controller='0' bus='0' target='1' unit='0'/>
    </disk>
    <controller type='usb' index='0' model='ich9-ehci1'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <master startport='0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0' multifunction='on'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci2'>
      <master startport='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x1'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci3'>
      <master startport='4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <controller type='virtio-serial' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </controller>
    <controller type='scsi' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
    </controller>
    <controller type='scsi' index='1'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/>
    </controller>
    <controller type='scsi' index='2'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' function='0x0'/>
    </controller>
    <controller type='scsi' index='3'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0c' function='0x0'/>
    </controller>
    <controller type='scsi' index='4'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0d' function='0x0'/>
    </controller>
    <controller type='scsi' index='5'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0e' function='0x0'/>
    </controller>
    <controller type='scsi' index='6'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0f' function='0x0'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:67:f7:d2'/>
      <source bridge='br0'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
    <serial type='pty'>
      <target port='0'/>
    </serial>
    <console type='pty'>
      <target type='serial' port='0'/>
    </console>
    <channel type='spicevmc'>
      <target type='virtio' name='com.redhat.spice.0'/>
      <address type='virtio-serial' controller='0' bus='0' port='1'/>
    </channel>
    <input type='tablet' bus='usb'/>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='spice' autoport='yes'/>
    <sound model='ich6'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </sound>
    <video>
      <model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <hostdev mode='subsystem' type='scsi' managed='no'>
      <source>
        <adapter name='scsi_host6'/>
        <address bus='0' target='0' unit='0'/>
      </source>
      <address type='drive' controller='6' bus='0' target='0' unit='0'/>
    </hostdev>
    <redirdev bus='usb' type='spicevmc'>
    </redirdev>
    <redirdev bus='usb' type='spicevmc'>
    </redirdev>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
    </memballoon>
  </devices>
</domain>
2.2 # virsh create test.xml
error: Failed to create domain from test.xml
error: internal error: failed to parse port number '-100'
Comment 7 yisun 2015-06-03 10:30:00 UTC 
And tested attach-device with invalid port
# cat disk.xml
    <disk type='network' device='lun'>
      <driver name='qemu' type='raw' cache='none'/>
      <source protocol='iscsi' name='lento.com:luns'>
        <host name='localhost' port='-100'/>
      </source>
      <target dev='sda' bus='scsi'/>
      <address type='drive' controller='0' bus='0' target='1' unit='0'/>
    </disk>

# virsh attach-device vv disk.xml 
error: Failed to attach device from disk.xml
error: internal error: failed to parse port number '-100'
Comment 9 errata-xmlrpc 2015-11-19 05:55:43 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2202.html
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