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vdev_id: implement slot numbering by port id 

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 Brian Behlendorf
parent d977122da9
commit d49d9c2bdc
2 changed files with 8 additions and 2 deletions
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6
cmd/vdev_id/vdev_id
View File

@ -237,7 +237,7 @@ sas_handler() {
PHY=`ls -d $port_dir/phy* 2>/dev/null | head -1 | awk -F: '{print $NF}'`
if [ -z "$PHY" ] ; then
return
PHY=0
fi
PORT=$(( $PHY / $PHYS_PER_PORT ))
@ -262,6 +262,10 @@ sas_handler() {
"phy")
SLOT=`cat $end_device_dir/phy_identifier 2>/dev/null`
;;
"port")
d=$(eval echo \${$i})
SLOT=`echo $d | sed -e 's/^.*://'`
;;
"id")
i=$(($i + 1))
d=$(eval echo \${$i})

4
man/man5/vdev_id.conf.5
View File

@ -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.