Bug 1581364
| Summary: | Hash operation not allowed during iteration [rhel-7.5.z] | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Oneata Mircea Teodor <toneata> |
| Component: | libvirt | Assignee: | Michal Privoznik <mprivozn> |
| Status: | CLOSED ERRATA | QA Contact: | yafu <yafu> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 7.4 | CC: | agurenko, bfournie, chhu, derekh, dyuan, fjin, hjensas, jdenemar, jherrman, kchamart, kevin, lmen, mabrams, mflusche, michele, mprivozn, msufiyan, mtessun, nmanos, rbalakri, sasha, wznoinsk, xuzhang |
| Target Milestone: | rc | Keywords: | Upstream, ZStream |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-3.9.0-14.el7_5.6 | Doc Type: | Bug Fix |
| Doc Text: |
Prior to this update, guest virtual machine actions that use a python library in some cases failed and "Hash operation not allowed during iteration" error messages were logged. Several redundant thread access checks have been removed, and the problem no longer occurs.
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Story Points: | --- |
| Clone Of: | 1576464 | Environment: | |
| Last Closed: | 2018-06-26 16:55:29 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: | 1576464 | ||
| Bug Blocks: | |||
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Description
Oneata Mircea Teodor
2018-05-22 15:04:37 UTC
*** Bug 1571384 has been marked as a duplicate of this bug. *** *** Bug 1577951 has been marked as a duplicate of this bug. *** Reproduced with libvirt-3.9.0-14.el7_5.2.x86_64.
Test steps:
1.Start a guest:
#virsh start test1
2.Do 'virsh list' in a loop:
#for i in {1..1000}; do virsh list; done
3.Open another terminal, do 'virsh domstats' in a loop:
#for i in {1..1000}; do virsh domstats; done
4.Check the libvirtd.log:
# cat /var/log/libvirt/libvirtd.log | grep -i "Hash operation not allowed during"
2018-06-07 01:57:07.673+0000: 28086: error : virHashForEach:597 : Hash operation not allowed during iteration
2018-06-07 01:57:08.077+0000: 28079: error : virHashForEach:597 : Hash operation not allowed during iteration
2018-06-07 01:57:08.650+0000: 28077: error : virHashForEach:597 : Hash operation not allowed during iteration
2018-06-07 01:57:09.057+0000: 28079: error : virHashForEach:597 : Hash operation not allowed during iteration
Verified with libvirt-3.9.0-14.el7_5.6.x86_64.
Test steps:
1.Start a guest:
#virsh start test1
2.Do 'virsh list' in a loop:
#for i in {1..1000}; do virsh list; done
3.Open another terminal, do 'virsh domstats' in a loop:
#for i in {1..1000}; do virsh domstats; done
4.Check the libvirtd.log after step 2&3, no error "Hash operation not allowed during iteration":
#cat /var/log/libvirt/libvirtd.log | grep -i "Hash operation not allowed during iteration"
no output
Also test do virsh list, virsh domstats, create/destroy guest, managedsave/restore guest parallel for about 48 hours, no error report and libvirtd worked well. *** Bug 1592785 has been marked as a duplicate of this bug. *** 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/RHSA-2018:1997 *** Bug 1596946 has been marked as a duplicate of this bug. *** *** Bug 1592785 has been marked as a duplicate of this bug. *** |