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Heads Up: mpxio support for SAS using the mpt driver
Date: Fri, 13 Apr 2007 01:33:31 +0000
From: Javen Wu <javen.wu at sun dot com>
To: on-all at sun dot com, onnv-gate at onnv dot sfbay dot sun dot com
Subject: Heads Up: mpxio support for SAS using the mpt driver
Heads Up: mpxio support for SAS using the mpt driver
The mpt driver has been enhanced to support mpxio with
supported storage devices. Supported devices include
some internal disks on some Niagara and Galaxy systems
as well as the forthcoming Low Cost Array.
When mpxio is enabled for your SAS and SATA devices,
they will be enumerated under scsi_vhci(7D) just like
fibre channel devices under fp(7D).
If you use BFU, then you must use the BFU from the
SUNWonbld package (available from /ws/onnnv-gate/public/packages)
after midnight pacific time. BFU users must run 'acr'
after upgrading from a build prior to this putback to
invoke the class action script responsible for ensuring
that your /kernel/drv/mpt.conf and /etc/driver_classes
files are up to date.
As part of this project, stmsboot(1M) has also been
enhanced to provide support for multipathed SAS devices.
By default, stmsboot(1D) operates on all attached and
multipath-capable controllers. If you wish to only
enable multipathing on fp or mpt controllers then you
should take advantage of the new flag which we added
to restrict operations:
/usr/sbin/stmsboot -D mpt -e
will only enable mpxio on attached mpt controllers,
and replacing "mpt" with "fp" in this command line will
make stmsboot only enable mpxio on attached fp controllers.
PSARC 2006/703 MPxIO extension for Serial Attached SCSI (SAS) on mpt(7D)
PSARC 2007/046 stmsboot(1M) extension for mpt(7D)
6442215 mpt.conf maybe over written because the filetype within the
SUNWckr package is 'f'
6443044 add mpxio support to SAS mpt driver
6502231 stmsboot needs to support SAS devices
6510425 the properties "flow_control" and "queue" in mpt.conf is useless
6518053 stmsboot should use privileges
6525558 untagged command unlikely to be sent to HBA during heavy I/O
If you find bugs in the new mpt(7D) driver, please file them
against solaris/kernel/driver-mpt-x86. You can reach the team
via mpxio-mpt at Sun dot COM.
Javen, Greg, Dolpher, James - the mpxio on mpt team.
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