Crash when writing more than 200GB in one batch

iSCSI related applications
mr-auh
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Re: Crash when writing more than 200GB in one batch

Post by mr-auh » Fri Dec 07, 2018 2:54 pm

A little update:
The QNAP support told me they escalated my issue and will get back in touch with me once they heard back from the technicall staff.

What really makes me scratch my head quite hard is the behaviour of the storage (6x HDDs) configured as RAID5.
At some point the data transfer and rise of cache just stops and the fileshare becomes unresponsive (can't browse any files with explorer, can't access the share restarting the explorer), however the QNAP itself doesn't crash.
2018-12-07_07_42_30.png
I can still access the files using File Station but trying to delete them just hangs the application. All I can do is reboot the QNAP.
2018-12-07_07_50_41.png
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storageman
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Re: Crash when writing more than 200GB in one batch

Post by storageman » Fri Dec 07, 2018 5:07 pm

This is off when it works without crashing, right? Or did your SSH do something more.
Strange we don't hear other people with this issue on that model.
temp.png
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mr-auh
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Re: Crash when writing more than 200GB in one batch

Post by mr-auh » Fri Dec 07, 2018 6:21 pm

storageman wrote:
Fri Dec 07, 2018 5:07 pm
This is off when it works without crashing, right? Or did your SSH do something more.
Strange we don't hear other people with this issue on that model.
temp.png
This setting has been off for all my tests. Seeing the behaviour of the problem it all looks like a software bug to me. However I would imagine that using a RAID5 with all 6 HDDs in this box would be quite common and others should have this problem as well. Keen to see what the QNAP Support has to say.

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storageman
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Re: Crash when writing more than 200GB in one batch

Post by storageman » Fri Dec 07, 2018 6:26 pm

How about creating a volume on those SSDs and doing a 200GB+ copy?
Personally, I think those Reds are part of the problem.

mr-auh
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Re: Crash when writing more than 200GB in one batch

Post by mr-auh » Fri Dec 07, 2018 8:20 pm

storageman wrote:
Fri Dec 07, 2018 6:26 pm
How about creating a volume on those SSDs and doing a 200GB+ copy?
Personally, I think those Reds are part of the problem.
I tried the same thing using the NVMe SSDs in RAID1, same problem though. We also have another QNAP with 12 WD RED in a RAID6 for the same purpose and that is working without any issues.

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