Bug 972964
| Summary: | WWN option for Hot Attaching SCSI Disks | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Jim McEvoy <jemcevoy> |
| Component: | libvirt | Assignee: | John Ferlan <jferlan> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.0 | CC: | dyuan, honzhang, jdenemar, jmiao, juzhang, rbalakri, sluo, weizhan, xuzhang |
| Target Milestone: | rc | Keywords: | Upstream |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-1.2.7-1.el7 | Doc Type: | Bug Fix |
| Doc Text: |
Cause:
Support was added to only add a WWN (World Wide Name) for a disk to libvirt via XML.
Consequence:
Cannot use virsh to define a WWN, rather the user must virsh edit the guest XML file and add the XML for the disk.
Fix:
Add --wwn to virsh attach-disk command
Result:
The following command would attach the test.img to a virtual machine as a SCSI device via virsh
virsh attach-disk rhel7.1 /var/lib/libvirt/images/test.img sdb --driver qemu --subdriver raw --type disk --sourcetype file --wwn 5000c60016ea71ad --cache none
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2015-03-05 07:20:46 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Jim McEvoy
2013-06-10 23:28:17 UTC
Fixed upstream by v1.0.6-15-g232240d:
commit 232240d0958fa967cee88d688b48e1bc1c0e1008
Author: Osier Yang <jyang>
Date: Tue Jun 4 11:27:04 2013 +0800
virsh: Allow attach-disk to specify disk wwn
Commit 6e73850b01ee support to set wwn for disks, but it was not
exposed to attach-disk.
This bug was not selected to be addressed in Red Hat Enterprise Linux 6. We will look at it again within the Red Hat Enterprise Linux 7 product. Test with the following packages, this bug is verified.
Package version:
libvirt-1.2.8-8.el7.x86_64
qemu-kvm-rhev-2.1.2-12.el7.x86_64
kernel-3.10.0-208.el7.x86_64
Steps:
1. prepare one running guest.
# virsh list --all
Id Name State
----------------------------------------------------
23 rhel7.1 running
2. hot-plug the disk with wwn option via parameter
# virsh attach-disk rhel7.1 /var/lib/libvirt/images/test.img sdb --driver qemu --subdriver raw --type disk --sourcetype file --wwn 5000c60016ea71ad --cache none
Disk attached successfully
3. checking the dumpxml, the disk and wwn is correct.
# virsh dumpxml rhel7.1
......
<disk type='file' device='disk'>
<driver name='qemu' type='raw' cache='none'/>
<source file='/var/lib/libvirt/images/test.img'/>
<backingStore/>
<target dev='sdb' bus='scsi'/>
<wwn>5000c60016ea71ad</wwn>
<alias name='scsi0-0-0-1'/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
......
4. login the guest, the wwn of disk in guest is correct also.
# sg_inq -p 0x83 /dev/sdb
VPD INQUIRY: Device Identification page
Designation descriptor number 1, descriptor length: 21
designator_type: vendor specific [0x0], code_set: ASCII
associated with the addressed logical unit
vendor specific: drive-scsi0-0-0-1
Designation descriptor number 2, descriptor length: 12
designator_type: NAA, code_set: Binary
associated with the addressed logical unit
NAA 5, IEEE Company_id: 0xc60
Vendor Specific Identifier: 0x16ea71ad
[0x5000c60016ea71ad]
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/RHSA-2015-0323.html |