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https://issues.apache.org/jira/browse/CLOUDSTACK-10310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16524246#comment-16524246
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ASF GitHub Bot commented on CLOUDSTACK-10310:
---------------------------------------------
blueorangutan commented on issue #2722: CLOUDSTACK-10310 Fix KVM reboot on
storage issue
URL: https://github.com/apache/cloudstack/pull/2722#issuecomment-400475036
<b>Trillian test result (tid-2827)</b>
Environment: kvm-centos7 (x2), Advanced Networking with Mgmt server 7
Total time taken: 30394 seconds
Marvin logs:
https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr2722-t2827-kvm-centos7.zip
Intermitten failure detected:
/marvin/tests/smoke/test_deploy_virtio_scsi_vm.py
Intermitten failure detected: /marvin/tests/smoke/test_privategw_acl.py
Intermitten failure detected: /marvin/tests/smoke/test_vm_life_cycle.py
Intermitten failure detected: /marvin/tests/smoke/test_vpc_redundant.py
Intermitten failure detected: /marvin/tests/smoke/test_vpc_vpn.py
Intermitten failure detected: /marvin/tests/smoke/test_hostha_kvm.py
Smoke tests completed. 63 look OK, 4 have error(s)
Only failed tests results shown below:
Test | Result | Time (s) | Test File
--- | --- | --- | ---
ContextSuite context=TestDeployVirtioSCSIVM>:setup | `Error` | 0.00 |
test_deploy_virtio_scsi_vm.py
test_03_vpc_privategw_restart_vpc_cleanup | `Failure` | 1116.27 |
test_privategw_acl.py
test_05_rvpc_multi_tiers | `Failure` | 319.98 | test_vpc_redundant.py
test_05_rvpc_multi_tiers | `Error` | 341.79 | test_vpc_redundant.py
test_hostha_enable_ha_when_host_in_maintenance | `Error` | 2.44 |
test_hostha_kvm.py
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> KVM hosts reboot if there is a short transient storage error
> ------------------------------------------------------------
>
> Key: CLOUDSTACK-10310
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-10310
> Project: CloudStack
> Issue Type: Improvement
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: KVM
> Affects Versions: 4.9.0, 4.10.0.0
> Reporter: Sean Lair
> Priority: Major
>
> If the KVM heartbeat file can't be written to, the host is rebooted, and thus
> taking down all VMs running on it. The code does try 5x times before the
> reboot, but the there is not a delay between the retires, so they are 5
> simultaneous retries, which doesn't help. Standard SAN storage HA operations
> or quick network blip could cause this reboot to occur.
> Some discussions on the dev mailing list revealed that some people are just
> commenting out the reboot line in their version of the CloudStack source.
> A better option (and a new PR is being issued) would be have it sleep between
> tries so it isn't 5x almost simultaneous tries. Plus, instead of rebooting,
> the cloudstack-agent could just be stopped on the host instead. This will
> cause alerts to be issued and if the host is disconnected long-enough,
> depending on the HA code in use, VM HA could handle the host failure.
> The built-in reboot of the host seemed drastic
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