Deanna
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Questions about getting ready for your Red Hat remote exam?

This thread is dedicated to connect you with Red Hat subject matter experts who can help answer your questions regarding Red Hat remote exams. Please see the following resources for Red Hat Remote Exams below:

For questions on scheduling or redeeming your exams,  please use the Red Hat Certification team comment form here. 

**Our subject matters experts in the Red Hat Learning Community will not be assisting with tasks related to scheduling exams. 

Deanna L
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Deanna
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herbertx
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I just completed creating a bootable usb device per the remote exam instructions and upon rebooting for the first time in order to run a compatibility check the process hung showing "a start job is running for activation of dm raidsets"  with error of "dm raid [966] segfault at o ip 00007f13bdb2a563 sp 00007fff3fdb20a8 error 4 in libc-2.31,so" .

all subsequent reboots hung with the same error.  

How to resolve?    Need help please.   If this is the wrong forum to resolve errors please direct me to correct forum.

herbertx

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JS_Learning
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Hi,

We could try to help you here, but we would need a lot more of information... Without going into details, maybe some more obvious steps to avoid the problem(s) and help you getting ready:

  • Is there another computer you can try on?
  • What Network connection you are using, home? Work? Maybe a firewall is interfering?
  • Is there any security enabled like Secure Boot?
  • what is the "sha256 " checksum of the iso you used (to verify its integrity): sha256sum rhrexboot.iso

Note: I just used  an iso downloaded a few days ago, and my checksum is:

eda73a25d7d9b5eb51273c1773ee08297d17fb4430200125f3432d2f31ab594f

(I assume that the version I just downloaded is not corrupted and was not updated since then). If our checksum matches, it is unlikely to be about a corrupted iso.

 

The dm raid errors seems to indicate something is not going on with your raid drivers/controllers. If true, we would have collect more technical information and send it to the relevant team.

Cheers,

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JS_Learning (Moderator) posted a new reply in General on 09-04-2020 12:53 AM in the Red Hat Learning Community:
Subject: Re: Questions about getting ready for your Red Hat remote exam?
Hi, We could try to help you here, but we would need a lot more of information... Without going into details, maybe some more obvious steps to avoid the problem(s) and help you getting ready: Is there another computer you can try on? What Network connection you are using, home? Work? Maybe a firewall is interfering? Is there any security enabled like Secure Boot? what is the "sha256 " checksum of the iso you used (to verify its integrity): sha256sum rhrexboot.iso Note: I just used  an iso downloaded a few days ago, and my checksum is: eda73a25d7d9b5eb51273c1773ee08297d17fb4430200125f3432d2f31ab594f (I assume that the version I just downloaded is not corrupted and was not updated since then). If our checksum matches, it is unlikely to be about a corrupted iso.   The dm raid errors seems to indicate something is not going on with your raid drivers/controllers. If true, we would have collect more technical information and send it to the relevant team. Cheers,


my answers:
Network connection used is at home via modem/router supplied by my internet provider. Not using WiFi. it's a simple router without firewall that supplies dhcp IP to any device that requests it. Again no firewall enabled or running - no ports blocked. There is no security enabled - no Secure Boot.
I ran a sha256 checksum against the downloaded iso file using windows certUtil and confirmed it matches your checksum exactly -
eda73a25d7d9b5eb51273c1773ee08297d17fb4430200125f3432d2f31ab594f. I even downloaded the iso several times, confirmed the hash and have the same result.
I am using simple SATA hard drives on my computer - no physical RAID controller - no RAID configured in bios. which brings up another question - why would the process be trying to TOUCH my hard drives? It's booting off of a 16 gig usb device - it shouldn't be configuring RAID for nothing but the usb device.


dennis
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my answers:
Network connection used is at home via modem/router supplied by my internet provider. Not using WiFi. it's a simple router without firewall that supplies dhcp IP to any device that requests it. Again no firewall enabled or running - no ports blocked. There is no security enabled - no Secure Boot.
I ran a sha256 checksum against the downloaded iso file using windows certUtil and confirmed it matches your checksum exactly -
eda73a25d7d9b5eb51273c1773ee08297d17fb4430200125f3432d2f31ab594f. I even downloaded the iso several times, confirmed the hash and have the same result.
I am using simple SATA hard drives on my computer - no physical RAID controller - no RAID configured in bios. which brings up another question - why would the process be trying to TOUCH my hard drives? It's booting off of a 16 gig usb device - it shouldn't be configuring RAID for nothing but the usb device.


dennis

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JS_Learning
Moderator
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Hi @douradoden,

  • The checksum should be indicating that your iso is not corrupted. 

 

  • About the question about touching your hard drive(s)- Who said the Remote Exam environment is actually touching your hard drive(s)? I said the error message seems to indicate something- as a hint on initiating a technical investigation. I spoke about some hardware components based on the error message. Having said that, when a Live USB environment boot from a computer, it does access some part of the hardware, like CPU, memory, Keyboard, etc... Since it boots from a specific partition on the live usb, it does not access the hard drive data (which is a rather different thing than a hardware raid controller anyway).

Anyway, you could try on any other computer, to have more information about your live usb (if you have that option). You could also provide detailled technical information so we can check with the team creating the Live Exam Environment). We would need screen capture of the problem, all technical info on the computer (brand, version, components, etc...), same for your 16GB USB key. Description on how you are booting... Anything that can help.

Cheers,

  • 1,369 Views

"About the question about touching your hard drive(s)- Who said the
Remote Exam environment is actually touching your hard drive(s)?"

YOU SAID IT said it thats who. You said:"The dm raid errors seems to
indicate something is not going on with your raid drivers/controllers"
in a previous response.
Heres the link:
https://learn.redhat.com/t5/General/Questions-about-getting-ready-for-your-Red-Hat-remote-exam/m-p/1...
So you see YOU SAID IT!
I posted a simple question about RedHat's remote exam usb boot process
not working requesting a solution and now you want to argue with me?
The question is what is the dm raid set job trying to do - why is it
throwing a seg fault?
If you have no clue then bump it up to another engineer.
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Sam_Akpan
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Hello Redhat Team,

Thank you guys for making it possible to deliver exams remotely in this challenging time we live in in.

I have my exams on Monday Sept 7th and i have been following this forum religously to ensure everything runs smoothly on that day. I do have some questions.

1. I have ran the compatibility test almost 50 times now on the device that i intend to use for the exam and each time i do its fails on the "Microphone volume is adequate". Today i just tested and had my music playing on the background and it passed but when i turned it off and the room was quiet it failed again. Does this mean that the compatibility test is checking for sound input to pass or just a coincidence? Every other parts of the compatibility test passed without a problem. If only this fails does that affect my ability to take the exam?

2. Also on the live exam environment after i put my redhat login. It says "You have no scheduled exam" even though my exam has been scheduled about 2weeks ago. Should i be worried about this?

Thank you

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shefeeqyr
Moderator
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Hi @Sam_Akpan,

 

1) There is an option in settings to turn the input mic's volume levels all the way to high. This typically fixes the microphone level issue. You have to turn the volume up and toggle to some other option in the settings once and then proceed to the compatibility test.  Have you tried that? Pasting an image below:

20200819_013546.jpg

 

2. The Proctoring application picks up your scheduled exams a few minutes before the start time. So, this should not worry you as long as your scheduler portal shows the exam scheduled date and time.

Best Regards,

Shefeeq

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Can I use 2 laptops for the web cams?


@Deanna wrote:

This thread is dedicated to connect you with Red Hat subject matter experts who can help answer your questions regarding Red Hat remote exams. Please see the following resources for Red Hat Remote Exams below:

For questions on scheduling or redeeming your exams,  please use the Red Hat Certification team comment form here. 

**Our subject matters experts in the Red Hat Learning Community will not be assisting with tasks related to scheduling exams. 

Deanna L

 

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shefeeqyr
Moderator
Moderator
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Hi @DevinTravis,

No. It has to be an external Webcam. No additional laptops, mobile phones, tablets etc. are allowed near your exam desk.

Best Regards,

Shefeeq

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