Re: Debugging SCSI 'UNMAP' ("Logical Block Provisioning") failure on an SSD

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Kashyap,

> /me naively wonders if it has anything to do with accessing it via
> Linux.

I'm guessing that the drive doesn't actually support SCSI UNMAP. I have
a T3 that reports all the right things in the bl/lbpv VPD pages but also
has lbpme set to 0.

Interestingly enough, my T3 does appear to be a regular SATA drive
behind a USB bridge. Have you tried to issue a DSM TRIM command via ATA
passthrough?

-- 
Martin K. Petersen	Oracle Linux Engineering
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