Messages in this thread | | | Date | Mon, 8 Feb 2016 11:13:50 +0100 | From | Christoph Hellwig <> | Subject | Re: complete boot failure in 4.5-rc1 caused by nvme: make SG_IO support optional |
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On Mon, Feb 08, 2016 at 12:01:16PM +0200, Sagi Grimberg wrote: > >> Do we have defined sysfs attributes for NVMe devices nowadays? > > /sys/block/nvme0n1/uuid
That's only supported for NVMe 1.1 and higher devices, and optional. For older or stupid devices we need to support the algorithm based on the serial attribute from nvme_fill_device_id_scsi_string() in drivers/nvme/host/scsi.c.
Which btw is іncorrect as it doesn't identify namespaces properly, and thus the associatation of 0 is an actively harmful lie.
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