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MPIO Driver

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Operating Systems AIX MPIO Driver
# 1  
Old 07-23-2009
Error MPIO Driver
On a particular LPAR, I was running AIX 5.3 TL 3. On Monday I did an update of the LPAR to 5.3 TL 9 SP2. The install was smooth, but then I ran into a problem.

The MPIO driver does not work with LSI's StoreAge (SVM4). I did some looking, and looks like

5.3 TL3 = IBM.MPIO 5.3.0.30
5.3 TL9 SP2 = IBM.MPIO 5.3.9.2

I am in the process of trying to figure out how to go back to the previous version. I searched the forum and found this link....but not sure what this will gain me.
www.unix.com/aix/76390-need-help-uninstalling-devices-common-ibm-mpio-rte-5-3-a.html

I was thinking about recovering from the backupos I ran, as well as the file level backup from about a week ago. This should take me back to before the update....

Thoughts? Or should I just try to uninstall the MPIO package and put the older version on?
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LEARN ABOUT LINUX

mfi

MFI(4)							   BSD Kernel Interfaces Manual 						    MFI(4)

NAME

     mfi -- LSI MegaRAID SAS driver

SYNOPSIS

     To compile this driver into the kernel, place the following lines in your kernel configuration file:

	   device pci
	   device mfi

     Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

	   mfi_load="YES"

DESCRIPTION

     This driver is for LSI's next generation PCI Express SAS RAID controllers.  Access to RAID arrays (logical disks) from this driver is pro-
     vided via /dev/mfid? device nodes.  A simple management interface is also provided on a per-controller basis via the /dev/mfi? device node.

     The mfi name is derived from the phrase "MegaRAID Firmware Interface", which is substantially different than the old "MegaRAID" interface and
     thus requires a new driver.  Older SCSI and SATA MegaRAID cards are supported by amr(4) and will not work with this driver.

     Two sysctls are provided to tune the mfi driver's behavior when a request is made to remove a mounted volume.  By default the driver will
     disallow any requests to remove a mounted volume.	If the sysctl dev.mfi.%d.delete_busy_volumes is set to 1, then the driver will allow
     mounted volumes to be removed.

HARDWARE

     The mfi driver supports the following hardware:

     o	 LSI MegaRAID SAS 1078
     o	 LSI MegaRAID SAS 8408E
     o	 LSI MegaRAID SAS 8480E
     o	 LSI MegaRAID SAS 9260
     o	 Dell PERC5
     o	 Dell PERC6
     o	 IBM ServeRAID M5015 SAS/SATA
     o	 IBM ServeRAID-MR10i
     o	 Intel RAID Controller SROMBSAS18E

FILES

     /dev/mfid?  array/logical disk interface
     /dev/mfi?	 management interface

DIAGNOSTICS

     mfid%d: Unable to delete busy device  An attempt was made to remove a mounted volume.

SEE ALSO

     amr(4), pci(4), mfiutil(8)

HISTORY

     The mfi driver first appeared in FreeBSD 6.1.

AUTHORS

     The mfi driver and this manual page were written by Scott Long <scottl@FreeBSD.org>.

BUGS

     The driver does not support big-endian architectures at this time.

BSD
								   May 12, 2010 							       BSD