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Volume full but Lun Online but not useable

Hi guys. I had a funny issue a few days ago. We have the following:

 

  • Volume with a single LUN in it both space guaranteed
  • 2 snapshots in the volume
  • 2 flexclones hanging off those snaps
  • fractional reserve set to 0
  • auto-grow disabled

Now, what happened was that the volume went to 100% but the LUN remained online. The OS saw that the disk had plenty of space on it and was trying to copy some large files onto it. The entire OS went into a hang because it couldn't commit the writes to the Storage. I would have assumed that the LUN would be brought offline in such a circumstances no?

Re: Volume full but Lun Online but not useable

Check lun show -v and see if someone turned on space_alloc.

 

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Re: Volume full but Lun Online but not useable

Thanks for taking the time to reply. I checked all LUNs and they all have:

 

  • Space_alloc: disabled

Therefore I would have expected the LUN to go offline as per https://library.netapp.com/ecmdocs/ECMP1368845/html/GUID-AAA98EEC-0636-4EA8-96D4-FAFD95C94A29.html