SuSE Linux Enterprise 11 SP1 under Modular Server MFSYS25V2: (Dual-) SCM Problem / MultiPath

[idata]

We are trying to install SLES 11 SP1 x64 on a MFS5520VIBR Compute-Modul and are facing a

critical problem regarding MultiPath.

uname -a

Linux LXTEST 2.6.32.12-0.7-default # 1 SMP 2010-05-20 11:14:20 +0200 x86_64 x86_64 x86_64 GNU/Linux

Installation Medium:

SLES-11-SP1-DVD-x86_64-GM-DVD1

Our Installation Procedure:

- Remove SCM # 2

- Create Virtual Drive

- Basic Installation of SLES 11 SP1 (apply almost all default settings)

- Install rpm package: (from Package SLES11SP1_MPIO_Setup20110712)

rpm -ivh --force scsi_dh_alua_sles11sp1-2-1.x86_64.rpm

- Copy MultiPath-Config (without editing) (from Package SLES11SP1_MPIO_Setup20110712)

cp multipath.conf /etc/multipath.conf

- Activate MultiPathD

multipathd on

- Ensure that MultiPathD is running

multipathd on

===> Output: multipathd on

- Plug-In the SCM # 2

- Reboot Compute-Modul

_____________________________________________________________

Output of multipath -ll:

Output of multipath -v4:

Feb 29 10:54:40 | Discover device /sys/block/sdb

Feb 29 10:54:40 | sdb: not found in pathvecFeb 29 10:54:40 | sdb: mask = 0x1fFeb 29 10:54:40 | sdb: dev_t = 8:16Feb 29 10:54:40 | sdb: size = 83886080Feb 29 10:54:40 | sdb: subsystem = scsiFeb 29 10:54:40 | sdb: vendor = IntelFeb 29 10:54:40 | sdb: product = Multi-FlexFeb 29 10:54:40 | sdb: rev = 0308Feb 29 10:54:40 | sdb: h:b:t:l = 0:0:1:0Feb 29 10:54:40 | sdb: serial = 4C20202000000000000000008714B4EE666632D3Feb 29 10:54:40 | sdb: get_stateFeb 29 10:54:40 | loading /lib64/multipath/libchecktur.so checkerFeb 29 10:54:40 | sdb: path checker = tur (controller setting)Feb 29 10:54:40 | sdb: state = runningFeb 29 10:54:40 | sdb: state = upFeb 29 10:54:40 | sdb: getuid = /lib/udev/scsi_id -g -u /dev/%n (controller setting)Feb 29 10:54:40 | sdb: uid = 222910001555ba713 (callout)Feb 29 10:54:40 | sdb: state = runningFeb 29 10:54:40 | sdb: prio = alua (controller setting)Feb 29 10:54:40 | reported target port group is 1Feb 29 10:54:40 | aas = 80 [active/optimized] [preferred]Feb 29 10:54:40 | sdb: alua prio = 150Feb 29 10:54:40 | Discover device /sys/block/sdaFeb 29 10:54:40 | sda: not found in pathvecFeb 29 10:54:40 | sda: mask = 0x1fFeb 29 10:54:40 | sda: dev_t = 8:0Feb 29 10:54:40 | sda: size = 83886080Feb 29 10:54:40 | sda: subsystem = scsiFeb 29 10:54:40 | sda: vendor = IntelFeb 29 10:54:40 | sda: product = Multi-FlexFeb 29 10:54:40 | sda: rev = 0308Feb 29 10:54:40 | sda: h:b:t:l = 0:0:0:0Feb 29 10:54:40 | sda: serial = 4C20202000000000000000008714B4EE666632D3Feb 29 10:54:40 | sda: get_stateFeb 29 10:54:40 | sda: path checker = tur (controller setting)Feb 29 10:54:40 | sda: state = runningFeb 29 10:54:40 | sda: state = upFeb 29 10:54:40 | sda: getuid = /lib/udev/scsi_id -g -u /dev/%n (controller setting)Feb 29 10:54:40 | sda: uid = 222910001555ba713 (callout)Feb 29 10:54:40 | sda: state = runningFeb 29 10:54:40 | sda: prio = alua (controller setting)Feb 29 10:54:40 | reported target port group is 0Feb 29 10:54:40 | aas = 02 [standby]Feb 29 10:54:40 | sda: alua prio = 1Feb 29 10:54:40 | Discover device /sys/block/sdcFeb 29 10:54:40 | sdc: not found in pathvecFeb 29 10:54:40 | sdc: mask = 0x1fFeb 29 10:54:40 | sdc: dev_t = 8:32Feb 29 10:54:40 | sdc: size = 0Feb 29 10:54:40 | sdc: subsystem = scsiFeb 29 10:54:40 | sdc: vendor = VirtualFeb 29 10:54:40 | sdc: product = FloppyFeb 29 10:54:40 | sdc: rev = 1.00Feb 29 10:54:40 | sdc: h:b:t:l = 1:0:0:1Feb 29 10:54:40 | Couldn't open node for sdc: No medium foundFeb 29 10:54:40 | Discover device /sys/block/sr0Feb 29 10:54:40 | sr0: device node name blacklistedFeb 29 10:54:40 | Discover device /sys/block/loop0Feb 29 10:54:40 | loop0: device node name blacklistedFeb 29 10:54:40 | Discover device /sys/block/loop1Feb 29 10:54:40 | loop1: device node name blacklistedFeb 29 10:54:40 | Discover device /sys/block/loop2Feb 29 10:54:40 | loop2: device node name blacklistedFeb 29 10:54:40 | Discover device /sys/block/loop3Feb 29 10:54:40 | loo...

[Daniel_O_Intel]

It looks like you've done all the steps from http://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=18634 http://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=18634

I haven't tried SLES 11 SP1 - do you have a non-service-packed distro to test with? There might be something in the service pack that changed.

[idata]

Try set your path grouping policy to group_by_serial in multipath.conf (reboot for changes to kick in)

path_grouping_policy "group_by_serial"