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Description of problem:
Just like drive-add support the libiscsi storage backends.
Version-Release number of selected component (if applicable):
host info:
# uname -r && rpm -q qemu-kvm
3.10.0-121.el7.x86_64
qemu-kvm-1.5.3-60.el7.x86_64
guest info:
# uname -r
3.10.0-121.el7.x86_64
How reproducible:
100%
Steps to Reproduce:
1.prepare a libiscsi lun.
# qemu-img info iscsi://10.66.90.100:3260/iqn.2001-05.com.equallogic:0-8a0906-4c41f7d03-453f49b421052a57-s2-sluo-270305-1/0
image: iscsi://10.66.90.100:3260/iqn.2001-05.com.equallogic:0-8a0906-4c41f7d03-453f49b421052a57-s2-sluo-270305-1/0
file format: raw
virtual size: 50G (53697576960 bytes)
disk size: unavailable
2.launch a QEMU.
3.hotplug a disk using blockdev-add with libiscsi backends.
{ "execute": "blockdev-add", "arguments": {'options' : {'driver': 'raw', 'id':'drive-disk1', 'file': {'driver': 'file', 'filename': 'iscsi://10.66.90.100:3260/iqn.2001-05.com.equallogic:0-8a0906-4c41f7d03-453f49b421052a57-s2-sluo-270305-1/0'}, 'cache': { 'writeback': false, 'direct': true, 'no-flush': false }}} }
Actual results:
{ "execute": "blockdev-add", "arguments": {'options' : {'driver': 'raw', 'id':'drive-disk1', 'file': {'driver': 'file', 'filename': 'iscsi://10.66.90.100:3260/iqn.2001-05.com.equallogic:0-8a0906-4c41f7d03-453f49b421052a57-s2-sluo-270305-1/0'}, 'cache': { 'writeback': false, 'direct': true, 'no-flush': false }}} }
{"error": {"class": "GenericError", "desc": "could not open disk image drive-disk1: Could not open file: No such file or directory"}}
Expected results:
Just like drive-add support the libiscsi storage backends.
{"execute":"__com.redhat_drive_add","arguments": {"file":"iscsi://10.66.90.100:3260/iqn.2001-05.com.equallogic:0-8a0906-4c41f7d03-453f49b421052a57-s2-sluo-270305-1/0","format":"raw","id":"drive-data-disk1","aio":"native","werror":"stop","rerror":"stop"}}
{"return": {}}
{"execute":"device_add","arguments":{"driver":"virtio-scsi-pci","id":"scsi1","bus":"pci.0","addr":"0x8"}}
{"return": {}}
{"execute":"device_add","arguments":{"driver":"scsi-hd","drive":"drive-data-disk1","id":"data-disk1","bus":"scsi1.0"}}
{"return": {}}
Additional info:
Comment 1Markus Armbruster
2014-11-03 17:25:34 UTC
blockdev-add is a work in progress upstream. At this time, we intend to bring the results to RHEL-7 qemu-kvm-rhev, but not to qemu-kvm.
blockdev-add support for iscsi is being worked on upstream. It should find its way into qemu-kvm-rhev via rebase or backport (bug 1159728). We don't intend to backport it to qemu-kvm.
Description of problem: Just like drive-add support the libiscsi storage backends. Version-Release number of selected component (if applicable): host info: # uname -r && rpm -q qemu-kvm 3.10.0-121.el7.x86_64 qemu-kvm-1.5.3-60.el7.x86_64 guest info: # uname -r 3.10.0-121.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.prepare a libiscsi lun. # qemu-img info iscsi://10.66.90.100:3260/iqn.2001-05.com.equallogic:0-8a0906-4c41f7d03-453f49b421052a57-s2-sluo-270305-1/0 image: iscsi://10.66.90.100:3260/iqn.2001-05.com.equallogic:0-8a0906-4c41f7d03-453f49b421052a57-s2-sluo-270305-1/0 file format: raw virtual size: 50G (53697576960 bytes) disk size: unavailable 2.launch a QEMU. 3.hotplug a disk using blockdev-add with libiscsi backends. { "execute": "blockdev-add", "arguments": {'options' : {'driver': 'raw', 'id':'drive-disk1', 'file': {'driver': 'file', 'filename': 'iscsi://10.66.90.100:3260/iqn.2001-05.com.equallogic:0-8a0906-4c41f7d03-453f49b421052a57-s2-sluo-270305-1/0'}, 'cache': { 'writeback': false, 'direct': true, 'no-flush': false }}} } Actual results: { "execute": "blockdev-add", "arguments": {'options' : {'driver': 'raw', 'id':'drive-disk1', 'file': {'driver': 'file', 'filename': 'iscsi://10.66.90.100:3260/iqn.2001-05.com.equallogic:0-8a0906-4c41f7d03-453f49b421052a57-s2-sluo-270305-1/0'}, 'cache': { 'writeback': false, 'direct': true, 'no-flush': false }}} } {"error": {"class": "GenericError", "desc": "could not open disk image drive-disk1: Could not open file: No such file or directory"}} Expected results: Just like drive-add support the libiscsi storage backends. {"execute":"__com.redhat_drive_add","arguments": {"file":"iscsi://10.66.90.100:3260/iqn.2001-05.com.equallogic:0-8a0906-4c41f7d03-453f49b421052a57-s2-sluo-270305-1/0","format":"raw","id":"drive-data-disk1","aio":"native","werror":"stop","rerror":"stop"}} {"return": {}} {"execute":"device_add","arguments":{"driver":"virtio-scsi-pci","id":"scsi1","bus":"pci.0","addr":"0x8"}} {"return": {}} {"execute":"device_add","arguments":{"driver":"scsi-hd","drive":"drive-data-disk1","id":"data-disk1","bus":"scsi1.0"}} {"return": {}} Additional info: