Odd storage Space issue

gregsachs

Active Member
Aug 14, 2018
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Hyper-V 2016, LSI9286-cv8e with JBOD enabled to a xyratex 12x3.5" enclosure.
I've run this for years with 12 Seagate 2tb drives, all as a storage pool with dual parity. No issues at all.
Drives are all 512b drives. The pool has physical sector size=4kb, logical sector size=512b.
Just looked at utilization, and decided to upgrade with 8x 4tb drives, so bought some x-EMC HGST 520b drives. All the new drives have been formatted using a HBA and SG_format to 512b.
sg_format reports 512b blocks, and 7.8 billion blocks as expected for 4 TB.
I can add one of the disks as a drive, and get all 3.64tb avaiable. I can put 3.6tb of data onto the disk.
Ok, now the wierdness:
If I try to add one of the EMC disks to a storage pool, it only will allow use of 2tb of the 3.64tb.
1660009195799.png
I have tried using diskpart to clean and making sure the disks are GPT initialized.
I have other >2tb disks in a different pool, but they are 4k.
Any ideas?
Hmm: as I post this, I see that the disk I made a raid 0, then deleted that is now allowing me to add it as 3.64TB. I'm really confused.
 

gregsachs

Active Member
Aug 14, 2018
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Replying to myself, but it did it with another drive. Same issue, shows as selected capacity of 2tb.
I then made a new space with just that drive, then made a new disk on it, which allowed 3.64tb as max size, and did not format it. Then I deleted that space and was able to add the drive to my original space with 3.64tb capacity. Very odd..
 

BloodKnight7

New Member
Nov 15, 2022
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Have you tried to look at the drives with the pretty storage pool.

 
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gregsachs

Active Member
Aug 14, 2018
492
157
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Have you tried to look at the drives with the pretty storage pool.

Did not know about this, cool little tool.
 

BloodKnight7

New Member
Nov 15, 2022
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Yeah... and sometimes it shows the values better than other consoles available. I have been able to troubleshoot storage issues better with it. Let me know if it shows any different info for you.