Mar 09, 2020

Hi,

We have seen some weird behavior when running HCI bench + vdbench.
To describe the situation:
We deploy 8 VMs in total , 2 per host. On the vdbench stats we can see that 6 out of 8 VMs are doing 99% of the IO. 2 VMs are running at very low load.
Checked the logs and stats of those 2 VMs and no errors. Java process is running on those 2 VMs.
This has been reproduced by us and some of our customers on vSAN and non-vSAN storages.
Some of our customers are pointing this issue being related with vSAN but I am seeing the same when using other storage.

Are you aware or does anyone reported something like this to you ?

Thanks !

Mar 09, 2020

I haven't heard anything like this reported.

1. What version of vdbench are you running?
2. Can you run a similar test using FIO, and does it produce the same pattern?

Also can you email us the log files (/opt/automation/logs) at vsanperformance@vmware.com?

Mar 24, 2020

Hi,

We are using the latest vdbench version 50407.
I also sent the log files by email, could you just confirm you received them ?

Thank you

Mar 04, 2020

Hiya, Getting no space left message on pre-validation. What is best to remove?

/opt/automation/lib/pre-validation.rb:46:in `close': No space left on device @ fptr_finalize_flush - /opt/automation/lib/../logs//prevalidation/pre-validation.log (Errno::ENOSPC)
from /opt/automation/lib/pre-validation.rb:46:in `open'
from /opt/automation/lib/pre-validation.rb:46:in `puts'
from /opt/automation/lib/pre-validation.rb:278:in `block in validate_vc_info'
from /opt/automation/lib/pre-validation.rb:253:in `each'
from /opt/automation/lib/pre-validation.rb:253:in `validate_vc_info'
from /opt/automation/lib/pre-validation.rb:677:in `

Mar 04, 2020

It's ok, we had some leftover tar.gz files which hadn't been moved

Mar 03, 2020

HI, we are running HCI-bench on an empty cluster with vsan.
We have run this several times with the exact same settings. But the results get better every time. We remove the VM's between test.
please advice

Mar 03, 2020

Can you share additional details?

- What is the environment?
- What is getting better, and by how much?
- Which test profiles and duration are you using?

You can email us at vsanperformance@vmware.com

Feb 26, 2020

do you need vSAN Network diagnostic mode enable to have graphana gather mettrics ?

Feb 26, 2020

no, not needed, vsan performance service is good enough.