Problems writing to intel P3700 NVMe drive

Wed May 27 15:34:09 PDT 2015

I may have missed it somewhere, what OS (and version) are you using?
Also are you accessing the nvme device e.g. /dev/nvme0n1 raw or via
partition or filesystem?
Gs

Author of the books:
Cloud and Virtual Data Storage Network (CRC Press & Intel Recommended
Reading List) The Green and Virtual Data Center (CRC Press & Intel
Recommended Reading List) Resilient Storage Networks – Designing Flexible
Scalable Data Infrastructures (Elsevier)

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-----Original Message-----
From: Linux-nvme [mailto:linux-nvme-bounces at lists.infradead.org] On Behalf
Of Pavilion Storage
Sent: Wednesday, May 27, 2015 4:30 PM
To: linux-nvme at lists.infradead.org
Subject: Problems writing to intel P3700 NVMe drive

I am having problems with writing to an intel P3700 NVMe drive on a ARM
based platform and I would appreciate any help in debugging this problem.
Here are my experiments and observations so far:

   - The drive is usable for read operations and I can run fio (randread,
etc) but I cannot write to it.
   - Other manufacturer's NVMe drive can be inserted into this platform and
I can write to it
   - I can insert the intel P3700 into an x86 host and I can perform write
operations
   - I have tried using the nvme-cli
(https://github.com/linux-nvme/nvme-cli) tool and have read the error codes
from read. It just shows 'WRITE_FAULT' which is not very helpful.
   - I have looked at the SmartLog reports and the 'Critical Warning'
is 0, i.e. the device is not in Read-Only mode
   - I have updated the firmware using the intel SSD-DataCenterTool and
updated the firmware on the drive the latest available version.
The updated drive works fine on x86 platform.

I think there is some combination of the platform and drive that is causing
the problem. Can anyone offer pointers on how to debug this?

Thx
Kishore

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