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vdev_id: implement slot numbering by port id

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With HPE hardware and hpsa-driven SAS adapters, only a single phy is
reported, but no individual per-port phys (ie. no phy* entry below
port_dir), which breaks topology detection in the current sas_handler
code. Instead, slot information can be derived directly from the port
number. This change implements a new slot keyword "port" similar to
"id" and "lun", and assumes a default phy/port of 0 if no individual
phy entry can be found. It allows to use the "sas_direct" topology with
current HPE Dxxxx and Apollo 45xx JBODs.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Daniel Kobras <d.kobras@science-computing.de>
Closes #6484
This commit is contained in:
sckobras
2017-08-15 00:18:26 +02:00
committed by Tony Hutter
parent aec4318870
commit 426563be70
2 changed files with 8 additions and 2 deletions
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man/man5/vdev_id.conf.5
+3 -1
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@@ -90,7 +90,7 @@ internally uses this value to determine which HBA or switch port a
device is connected to. The default is 4.
.TP
\fIslot\fR <bay|phy|id|lun>
\fIslot\fR <bay|phy|port|id|lun>
Specifies from which element of a SAS identifier the slot number is
taken. The default is bay.
@@ -98,6 +98,8 @@ taken. The default is bay.
\fIphy\fR - read the slot number from the phy identifier.
\fIport\fR - use the SAS port as the slot number.
\fIid\fR - use the scsi id as the slot number.
\fIlun\fR - use the scsi lun as the slot number.