Bug 1070905
| Summary: | VMs with names longer than 48 characters can be created but not started | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Tom Lavigne <tlavigne> |
| Component: | libvirt | Assignee: | Jiri Denemark <jdenemar> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 6.5 | CC: | acathrow, audgiri, berrange, dyuan, iheim, jdenemar, jhunsaker, lcui, lpeer, lsu, mchappel, michal.skrivanek, mjenner, mzhan, ofrenkel, oourfali, pm-eus, Rhev-m-bugs, teigland, tlavigne, vfeenstr, yeylon |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | All | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-0.10.2-29.el6_5.5 | Doc Type: | Bug Fix |
| Doc Text: |
Cause: Sanlock has a 48 characters limit on lock owner name.
Consequence: When sanlock locking driver is enabled in libvirt, domains with names longer than the limit could not be started.
Fix: Since the owner name is not used by sanlock for anything but a more human friendly debugging output, libvirt truncates long domain names when sending them to sanlock so that they are shorter than 48 characters.
Result: Domains with names longer than 48 characters can be successfully started even if sanlock locking driver is enabled.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2014-03-06 09:33:22 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1060557 | ||
| Bug Blocks: | |||
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Description
Tom Lavigne
2014-02-27 17:07:07 UTC
I can reproduce this issue with: RHEVM 3.3.1-0.48.el6ev libvirt-0.10.2-29.el6_5.4.x86_64 Create a vm with name "mhuizer_9123456789212345678931234567894123456789512111" which name length is longer than 48. start the vm, from the event console, error message will pop up: "VM mhuizer_9123456789212345678931234567894123456789512111 is down. Exit message: internal error internal error Domain name 'mhuizer_9123456789212345678931234567894123456789512111' exceeded 48 characters." Verified the issue with: libvirt-0.10.2-29.el6_5.5.x86_64 libvirt-debuginfo-0.10.2-29.el6_5.5.x86_64 libvirt-lock-sanlock-0.10.2-29.el6_5.5.x86_64 libvirt-python-0.10.2-29.el6_5.5.x86_64 libvirt-client-0.10.2-29.el6_5.5.x86_64 libvirt-devel-0.10.2-29.el6_5.5.x86_64 RHEVM 3.3.1-0.48.el6ev Use the same env as comment4, Scenario A: vm with 54 char name. 1. In rhevm3.3, Start the vm with name "mhuizer_9123456789212345678931234567894123456789512111" (totally 55 char with '\0'), the vm could start successfully. Console popup "VM mhuizer_9123456789212345678931234567894123456789512111 started on Host lcui-rhel65" 2. In host, # sanlock status daemon 450a307d-77a2-49c1-befb-88f422c91e49.lcui-rhel6 ... p 30559 mhuizer_912345678921234567893123456789412345678 ... The owner_name part have been truncated as 48 chars by design. Scenario B: vm with a normal name shorter than 48 1. In rhevm3.3, Start the vm with name "lcui_rhel_test" VM start successfully and console popup: VM lcui_rhel_test was started by admin@internal (Host: lcui-rhel65). 2. In host, # sanlock status ... p 30559 mhuizer_912345678921234567893123456789412345678 p 29995 p 32720 lcui_rhel_test ... New VM name displayed with the full name as it is shorter than 48 Scenario C: create a vm with name longer than 48 in KVM. The vm could start successfully. As above all, change the status from 'ON_QA' to 'VERIFIED' 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. http://rhn.redhat.com/errata/RHBA-2014-0256.html |