| Summary: | [scale] VM Template Creation dialog blocking UI for around 2 minutes during concurrent VM start operations | ||
|---|---|---|---|
| Product: | [oVirt] ovirt-engine | Reporter: | mlehrer |
| Component: | Frontend.WebAdmin | Assignee: | Tal Nisan <tnisan> |
| Status: | CLOSED UPSTREAM | QA Contact: | Pavel Stehlik <pstehlik> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 4.0.5.1 | CC: | amureini, bugs, izuckerm, michal.skrivanek, mlehrer, oourfali, tjelinek, tnisan, ylavi |
| Target Milestone: | ovirt-4.2.0 | Keywords: | Performance |
| Target Release: | --- | Flags: | rule-engine:
ovirt-4.2+
|
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-08-21 10:45:42 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | Storage | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
|
Description
mlehrer
2016-11-17 00:14:42 UTC
Logs? blocked==completely blank or there was the spinning thingie? it may have been simply slow in getting responses from backend due to other ongoing operations. Sounds like an engine issue, not UI. Is the UI waiting on a server response when this is happening? Moving to virt to examine the issue. (In reply to Yaniv Kaul from comment #1) > Logs? https://drive.google.com/drive/folders/0B8V1DXeGhPPWMi1SNjdYOVFlaWs?usp=sharing (In reply to Michal Skrivanek from comment #2) > blocked==completely blank or there was the spinning thingie? > it may have been simply slow in getting responses from backend due to other > ongoing operations. Yes, the 'spinning thingie', see the following link there's a video of it occurring. Engine.log shows that at 2016-11-17 18:19:58 VMs are powered on 'WaitForLaunch' --> 'NotResponding' starts Shortly after VM Template Create is issued and the task polling begins. (In reply to Greg Sheremeta from comment #3) > Sounds like an engine issue, not UI. > > Is the UI waiting on a server response when this is happening? likely just slow engine indeed. This needs to be correlated with engine load, in general there's nothing wrong about it unless it was like that for minutes/hours This needs to be isolated first before we can do anything about it. I would suggest to start with the non-responsive VMs and minimal reproduction scenario sorry I missed the fact this is "Make Template" flow - there are large disks - it takes ~1 minute which is not so bad it is likely storage operations taking time. Tal, do you want to share your thoughts? How can I have thoughts without logs? Mordechai, please attach Engine logs (In reply to Tal Nisan from comment #8) > How can I have thoughts without logs? > Mordechai, please attach Engine logs Tal, My apologies the logs were not added directly to bugzilla, as indicated in comment 5 you can find the logs here instead. https://drive.google.com/drive/folders/0B8V1DXeGhPPWMi1SNjdYOVFlaWs?usp=sharing Please let me know if your missing further details or require enviroment access. aaand putting the needinfo back to Tal Gave it a look, can't find anything out of the ordinary, it will take more research so I have no insights for now moving to storage for investigation Tal - I don't see this being handled in 4.1? Most likely not, we aren't aware of this happening in the field and given the preliminary look I gave it it seems that it needs a lot of work to analyze and we don't want to risk 4.1.1 Moving out all non blocker\exceptions. Does this reproduce in the new 4.2 GUI? (In reply to Allon Mureinik from comment #16) > Does this reproduce in the new 4.2 GUI? This does not reproduce in 4.2.0-0.0.master.20170818152502.gita8c361f.el7.centos Tested with 200 VMs with 5 disks each. Attempted to create VM template while 5 VMs were starting, and the UI did not block when the VM template was created. (In reply to Ilan Zuckerman from comment #17) > (In reply to Allon Mureinik from comment #16) > > Does this reproduce in the new 4.2 GUI? > > > This does not reproduce in > 4.2.0-0.0.master.20170818152502.gita8c361f.el7.centos > > Tested with 200 VMs with 5 disks each. > Attempted to create VM template while 5 VMs were starting, and the UI did > not block when the VM template was created. Thanks Ilan! I'm closing this bug under the assumption the work done in 4.2 solved the issue. If it reproduced, please reopn. |