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Nimble thin LUN + CentOS 7: does discard / SCSI UNMAP work?

 
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storage-admin
Collector

Nimble thin LUN + CentOS 7: does discard / SCSI UNMAP work?

Hello,

I have Nimble CS700 running 5.0.4.0-576551-opt FW, I have a bucnh of thin LUNs that are iSCSI attached to CentOS 7 hosts , I recenetly noticed space consumuption mismatch of what being reported by those hosts and by the array.

OK, I found this document  - https://infosight.hpe.com/InfoSight/media/kb/active/htr1455131720138.whz/mfu1456412605066.html and tried both methods decrived, however had no luck with it, and still see the space consumption mismatch, sometimes in TiB =(

Is there anyone who suscefully managed to setup Linux iSCSI initators, where "trim" utility worked?

Thanks!

6 REPLIES
Seenivasan-XP
Frequent Advisor

Re: Nimble thin LUN + CentOS 7: does discard / SCSI UNMAP work?

Hi Storage Admin,

Would suggest you to log a support case on this.

 

Hope this helps!
Regards
Seenivasan-XP

If you feel this was helpful please click the KUDOS! thumb below!

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storage-admin
Collector

Re: Nimble thin LUN + CentOS 7: does discard / SCSI UNMAP work?

This was actually the first thing I've done.

It's being hanlded as if HPE support doesn't care about it, they first pointed me the docs I already knew about, now it's been 2 weeks with no anwers whatsoever =(

Seenivasan-XP
Frequent Advisor

Re: Nimble thin LUN + CentOS 7: does discard / SCSI UNMAP work?

Hi Storage-Admin,

Can you help me with the support case ID logged for this?

 

Hope this helps!
Regards
Seenivasan-XP

If you feel this was helpful please click the KUDOS! thumb below!

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storage-admin
Collector

Re: Nimble thin LUN + CentOS 7: does discard / SCSI UNMAP work?

Yes, sure, it's #02461557.

Seenivasan-XP
Frequent Advisor

Re: Nimble thin LUN + CentOS 7: does discard / SCSI UNMAP work?

Hi Storage Admin,

Let me check & update you.

 

Hope this helps!
Regards
Seenivasan-XP

If you feel this was helpful please click the KUDOS! thumb below!

***********************************************************************************
mamatadesaiNim
HPE Blogger

Re: Nimble thin LUN + CentOS 7: does discard / SCSI UNMAP work?

Hello,

Did you try fstrim?  What did the command say?

Thanks!

HPE Nimble Storage