* Duplicate subnqn of NVMe SSD Controllers
@ 2018-10-27 7:34 zhitaoli1201
2018-10-27 8:26 ` Christoph Hellwig
0 siblings, 1 reply; 2+ messages in thread
From: zhitaoli1201 @ 2018-10-27 7:34 UTC (permalink / raw)
Hello, everyone,
I am Zhitao Li, interested in Linux kernel and?SSDs.
I am writing nvme device drivers based on my Open-channel SSDs. However, when two SSDs are connected to motherboard and Linux(4.17) boots, following warning information will be printed in the booting process:
"nvme nvme1: ignoring ctrl due to duplicate subnqn (nqn.2014.08.org.nvmexpress:1ded1dedAA....)"
It seems that the?nvme qualified name of my two SSDs is same. After booting, only one device is available.
Could anyone give some explanation or advice about how to make both devices availbale?
?
Best regards,
Zhitao Li
^ permalink raw reply [flat|nested] 2+ messages in thread
* Duplicate subnqn of NVMe SSD Controllers
2018-10-27 7:34 Duplicate subnqn of NVMe SSD Controllers zhitaoli1201
@ 2018-10-27 8:26 ` Christoph Hellwig
0 siblings, 0 replies; 2+ messages in thread
From: Christoph Hellwig @ 2018-10-27 8:26 UTC (permalink / raw)
On Sat, Oct 27, 2018@03:34:52PM +0800, zhitaoli1201@163.com wrote:
> Hello, everyone,
>
>
> I am Zhitao Li, interested in Linux kernel and?SSDs.
>
> I am writing nvme device drivers based on my Open-channel SSDs. However, when two SSDs are connected to motherboard and Linux(4.17) boots, following warning information will be printed in the booting process:
>
>
> "nvme nvme1: ignoring ctrl due to duplicate subnqn (nqn.2014.08.org.nvmexpress:1ded1dedAA....)"
This means your devices have a duplicate serial (and model, but that is
expected) number, which means they are buggy in a way that can have
data integrity consequences. Please talk to the vendor so that the
firmware will provide a proper unique serial number.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2018-10-27 7:34 Duplicate subnqn of NVMe SSD Controllers zhitaoli1201
2018-10-27 8:26 ` Christoph Hellwig
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