Hi ,
For attaching iSCSI disk I have tried like this
iscsi target side :
1 created an iqn number
#tgtadm --lld iscsi --op new --mode target --tid 1 -T iqn.2009-06.com.eucalyptus.cluster1:store1
2. added one lun to it
#tgtadm --lld iscsi --op new --mode logicalunit --tid 1 --lun 1 -b /fs.iscsi.disk
3.To enable the target to accept any initiators, enter:
#tgtadm --lld iscsi --op bind --mode target --tid 1 -I ALL
4.To view the current configuration, enter:
#tgtadm --lld iscsi --op show --mode target
iscsi initaitor side (where libvirt and xen is running)
1. to scan for the newly created target
#iscsiadm -m discovery -t sendtargets -p 192.168.53.14
2. created pool file
<pool type="iscsi">
<name>sample3</name>
<source>
<host name="192.168.53.14"/>
<device path="iqn.2009-06.com.eucalyptus.cluster1:store1"/>
</source>
<target>
<path>/dev/disk/by-path</path>
</target>
</pool>
3.#virsh pool-define sample_pool.xml
#virsh pool-start sample3
then it created one link like this at /dev/disk/by-path/
ip-192.168.53.14:3260-iscsi-iqn.2009-06.com.eucalyptus.cluster1:store1-lun-1 -> ../../sdb
4. I have attached using virsh attach-disk
#virsh attach-disk 1 /dev/sdb xvdb
It is attached successfully , I console in vm I have checked .
But while using with eucalyptus,It is not attching.
I'm using eucalyptus 3.4.2 , libvirt 1.2.3 with xen4.3.1 to attach volume to vm .
eucalyptus attaching volume is done through iscsi disk , intermediate files are created while attaching volume in xml format as below.
File 1:
<?xml version="1.0" encoding="UTF-8"?>
<disk type="block">
<driver cache="none" name="phy"/>
<source dev="/dev/disk/by-id/scsi-1IET_00230001"/>
<target dev="sdf" bus="scsi"/>
<serial>vol-759A3CDB-dev-sdf</serial>
</disk>
File 2:
<?xml version="1.0" encoding="UTF-8"?>
<volume>
<hypervisor type="xen" capability="xen+hw" bitness="64"/>
<id>vol-759A3CDB</id>
<user>AIDOMCCNSP7YNR7IEZEUX</user>
<instancePath>/usr/local/eucalyptus/work/AIDOMCCNSP7YNR7IEZEUX/i-ED153F84</instancePath>
<os platform="linux" virtioRoot="false" virtioDisk="false" virtioNetwork="false"/>
<backing>
<root type="image"/>
</backing>
<diskPath targetDeviceType="disk" targetDeviceName="sdf" targetDeviceBus="scsi" sourceType="block" serial="vol-759A3CDB-dev-sdf">/dev/disk/by-id/scsi-1IET_00230001</diskPath>
</volume>
in libvirtd.log i'm getting
error : libxlDomainAttachDeviceDiskLive:2567 : unsupported configuration: disk bus 'scsi' cannot be hotplugged.
Can u suggest how to enable or patch to scsi hotplug from libvirt which support for xen.
Can u say the meaning of PATCH 11/12 what is 11/12 means.
eg ; [PATCH 11/12] Properly support SCSI drive hotplug
With Regards
Prapulla Kumar R
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