Public bug reported:
Trying to use iSCSI with libvirt/Xen, attaching volumes to instances was
failing. I tracked this down to the libvirt XML looking like:
<disk type="block" device="disk">
<driver name="file" type="raw" cache="none"/>
<source
dev="/dev/disk/by-path/ip-192.168.8.11:3260-iscsi-iqn.1986-03.com.sun:02:ecd142ab-b1c7-6bcf-8f91-f55b6c766bcc-lun-0"/>
<target bus="xen" dev="xvdb"/>
<serial>e8c640c6-641b-4940-88f2-79555cdd5551</serial>
</disk>
The driver name should be "phy", not "file".
More digging lead to the iSCSI volume driver in nova/virt/libvirt/volume.py,
which does:
class LibvirtISCSIVolumeDriver(LibvirtBaseVolumeDriver):
"""Driver to attach Network volumes to libvirt."""
def __init__(self, connection):
super(LibvirtISCSIVolumeDriver,
self).__init__(connection, is_block_dev=False)
Surely is_block_dev should be "True" for iSCSI?? Changing this makes the
problem go away - now pick_disk_driver_name() in nova/virt/libvirt/utils.py
does the right thing and my volume attaches successfully.
Am I missing something here... ?
** Affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1273496
Title:
libvirt iSCSI driver sets is_block_dev=False
Status in OpenStack Compute (Nova):
New
Bug description:
Trying to use iSCSI with libvirt/Xen, attaching volumes to instances
was failing. I tracked this down to the libvirt XML looking like:
<disk type="block" device="disk">
<driver name="file" type="raw" cache="none"/>
<source
dev="/dev/disk/by-path/ip-192.168.8.11:3260-iscsi-iqn.1986-03.com.sun:02:ecd142ab-b1c7-6bcf-8f91-f55b6c766bcc-lun-0"/>
<target bus="xen" dev="xvdb"/>
<serial>e8c640c6-641b-4940-88f2-79555cdd5551</serial>
</disk>
The driver name should be "phy", not "file".
More digging lead to the iSCSI volume driver in nova/virt/libvirt/volume.py,
which does:
class LibvirtISCSIVolumeDriver(LibvirtBaseVolumeDriver):
"""Driver to attach Network volumes to libvirt."""
def __init__(self, connection):
super(LibvirtISCSIVolumeDriver,
self).__init__(connection, is_block_dev=False)
Surely is_block_dev should be "True" for iSCSI?? Changing this makes the
problem go away - now pick_disk_driver_name() in nova/virt/libvirt/utils.py
does the right thing and my volume attaches successfully.
Am I missing something here... ?
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https://bugs.launchpad.net/nova/+bug/1273496/+subscriptions
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