Hi All,

I'm facing a problem in mapping SAN disks connected through LSI HBAs on my servers, I even unable to list them via hbacmd it shows (HBAAPI[14809]: Encounterd and error loading: /usr/lib/libqlsdm.so) the mapper is showing errors also, below are some details from various logs:

dmesg:

device-mapper: table: 251:0: multipath: error getting device
device-mapper: ioctl: error adding target to table


multipath -v9 (part of it)

libdevmapper: ioctl/libdm-iface.c(1672): dm reload 36842b2b067e9dc0014aa2db40662e177 OF [16384]
libdevmapper: ioctl/libdm-iface.c(1689): device-mapper: reload ioctl failed: Invalid argument
libdevmapper: ioctl/libdm-iface.c(1672): dm remove 36842b2b067e9dc0014aa2db40662e177 NF [16384]
libdevmapper: libdm-common.c(622): 36842b2b067e9dc0014aa2db40662e177: Stacking NODE_DEL (replaces other stacked ops)
libdevmapper: ioctl/libdm-iface.c(1672): dm create 36842b2b067e9dc0014aa2db40662e177 mpath-36842b2b067e9dc0014aa2db40662e177 OF [16384]
libdevmapper: libdm-common.c(606): 36842b2b067e9dc0014aa2db40662e177: Stacking NODE_ADD (251,0) 0:6 0660
libdevmapper: ioctl/libdm-iface.c(1672): dm reload 36842b2b067e9dc0014aa2db40662e177 OF [16384]
libdevmapper: ioctl/libdm-iface.c(1689): device-mapper: reload ioctl failed: Invalid argument
libdevmapper: ioctl/libdm-iface.c(1672): dm remove 36842b2b067e9dc0014aa2db40662e177 NF [16384]
libdevmapper: libdm-common.c(622): 36842b2b067e9dc0014aa2db40662e177: Stacking NODE_DEL (replaces other stacked ops)
libdevmapper: ioctl/libdm-iface.c(1672): dm info 36842b2b067e9dc0014aa2db40662e177 NF [16384]
36842b2b067e9dc0014aa2db40662e177: domap (0) failure for create/reload map

rm.log

HBANYWARE VERSION: 5.0.44.1
(03-21-2011 16:22:09) InitDiagEnv found 0 adapters
(03-21-2011 16:22:09) In LoadRMLibraries
(03-21-2011 16:22:10) HBAAPI found 0 local adapters
(03-21-2011 16:22:10) Local Adapter Count = 0, CNA count = 0
(03-21-2011 16:22:10) Error calling getOperatingMode

fdisk -l - does not show San disks

Can anybody advise how can I get my HBAs working, below are the details of my server:

Dell R710
OS: Citrix XenServer Host 5.6.0-31188p
kernel: 2.6.27.42-0.1.1.xs5.6.0.44.111158xen #1 SMP Mon May 3 21:26:51 EDT 2010 i686 i686 i386 GNU/Linux
HBAs: LSI Logic / Symbios Logic SAS2008 PCI-Express Fusion-MPT SAS-2 [Falcon] (rev 03)

Thanks.

I found a solution for this problem. The reason was that all logical disks on the SAN box (powervault) were mapped directly to one host, that's why the HBAs on the other server were not able to map the drives.

The solution was to (using Dell powervault storage console) remove the direct mapping, create host group and add both servers to it, and finally map the drives to the host group.

After booting both servers all HBAs will be ready and mapped correctly.