Bug 1801139
| Summary: | can't start two guests with passthrough of an iscsi lun with "shareable" element | ||||||
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| Product: | Red Hat Enterprise Linux 7 | Reporter: | gaojianan <jgao> | ||||
| Component: | libvirt | Assignee: | Ján Tomko <jtomko> | ||||
| Status: | CLOSED ERRATA | QA Contact: | gaojianan <jgao> | ||||
| Severity: | high | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 7.8 | CC: | jdenemar, jen, jgao, jtomko, libvirt-maint, lmen, lmiksik, yisun | ||||
| Target Milestone: | rc | Keywords: | Regression | ||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | libvirt-4.5.0-33.el7 | Doc Type: | If docs needed, set a value | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2020-03-31 19:59:02 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: | |||||||
| Attachments: |
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Verified on: libvirt-4.5.0-33.el7.x86_64 qemu-kvm-rhev-2.12.0-44.el7.x86_64 Sc1:hot-plug the device to two guests 1.Prepare an iscsi server and login the target in the host # iscsiadm -m session tcp: [1] 10.66.85.243:3260,1 iqn.2015-01.com.fred:444 (non-flash) tcp: [2] 10.66.85.243:3260,1 iqn.2016-03.com.virttest:logical-pool.target6 (non-flash) # lsscsi ... [5:0:0:0] disk LIO-ORG device.logical- 4.0 /dev/sdc 2.Passthrough the disk to two guests For the 1st : # cat attach.xml <hostdev managed="no" mode="subsystem" type="scsi"> <source> <adapter name="scsi_host5" /> <address bus="0" target="0" unit="0" /> </source> <shareable/> --------------with shareable </hostdev> # virsh attach-device vm2 attach.xml Device attached successfully For the 2nd with the same xml: # virsh attach-device avocado-vt-vm1 attach.xml Device attached successfully Login the guest ,the disk works well Sc2:cold-plug the device to two guests: # virsh attach-device avocado-vt-vm1 attach.xml --config Device attached successfully # virsh attach-device vm2 attach.xml --config Device attached successfully # virsh start vm2 Domain vm2 started # virsh start avocado-vt-vm1 Domain avocado-vt-vm1 started and then detach the device and attach again, # virsh detach-device vm2 attach.xml Device detached successfully # virsh attach-device vm2 attach.xml Device attached successfully Work as expected 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://access.redhat.com/errata/RHBA-2020:1094 |
Created attachment 1662115 [details] Libvirtd log Description of problem: As subject Version-Release number of selected component (if applicable): libvirt-4.5.0-32.virtcov.el7.x86_64 qemu-kvm-rhev-2.12.0-44.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.Prepare an iscsi server and login the target in the host # iscsiadm -m session tcp: [1] 10.66.85.243:3260,1 iqn.2015-01.com.fred:444 (non-flash) tcp: [2] 10.66.85.243:3260,1 iqn.2016-03.com.virttest:logical-pool.target6 (non-flash) # lsscsi ... [5:0:0:0] disk LIO-ORG device.logical- 4.0 /dev/sdc 2.Passthrough the disk to two guests For the 1st : # cat attach.xml <hostdev managed="no" mode="subsystem" type="scsi"> <source> <adapter name="scsi_host5" /> <address bus="0" target="0" unit="0" /> </source> <shareable/> --------------with shareable </hostdev> # virsh attach-device vm2 attach.xml Device attached successfully For the 2nd with the same xml: # virsh attach-device avocado-vt-vm1 attach.xml error: Failed to attach device from attach.xml error: Failed to read file '/dev/sdc': Value too large for defined data type 3.In the 2nd guest,you can also hit the issue by: # virsh attach-device avocado-vt-vm1 attach.xml --config Device attached successfully # virsh start avocado-vt-vm1 error: Failed to start domain avocado-vt-vm1 error: Failed to read file '/dev/sdc': Value too large for defined data type Actual results: As step 2 and 3 Expected results: The 2nd guest should be started without error Additional info: