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19 .Nd Intel NVMe compliant storage driver
25 framework to provide access to
27 NVMe compliant solid-state storage devices.
29 NVMe devices supporting multiple namespaces will present each
32 instance in the system.
37 driver can be configured by defining properties in the \fBnvme.conf\fR
38 file. The parameters are considered an unstable interface, subject to
39 change without notice. The following properties are currently
43 This can be set to 0 to allow
45 to attach to devices supporting newer version of the NVMe
46 specification. The default value is 1, limiting
48 to work with devices up to specification version 1.0.
49 .It Va ignore-unknown-vendor-status
50 This can be set to 1 to allow
52 to continue operating even if it receives an unknown vendor command
54 .It Va admin-queue-len
55 This is the number of entries in the admin command queue. Legal values
56 are between 16 and 4096, the default value is 256.
58 This is the number of entries in each I/O command queue. Legal values
59 are between 16 and 65536, the default value is 1024.
60 .It Va async-event-limit
61 This is the maximum number of asynchronous event requests issued by
62 the driver. Asynchronous events are used to report error conditions.
63 The driver will never use more asynchronous events than this value, or
64 what the hardware supports if it is less, or what 1/10th of the admin
65 queue length if it is less.
66 .It Va volatile-write-cache-enable
67 This property can be set to 0 to disable the volatile write cache, if
68 the hardware supports it.
69 The default setting is 1, which enables the volatile write cache.
73 .Bl -tag -compact -width Pa
74 .It Pa /dev/dsk/cntnd0sn
75 Block device minor nodes.
76 .It Pa /dev/rdsk/cntnd0sn
77 Raw block device minor nodes.
80 In the device minor nodes, the following substitutions may occur:
81 .Bl -tag -offset indent -width Va
83 A controller number, typically one for each
85 device found. Controller numbers are dynamically assigned by the
88 The target number, this corresponds to the namespace ID used by the
89 hardware. Namespace ID 0 is reserved, hence target numbers start with
94 number, representing a subset of the disk. See