[Xen-API] compiling storage managers (sm) to support LVM SR on vanilla centos + xenapi

[Sayid Munawar <ayik@xxxxxxxxxxxxx>]

Hi,

The situation here is that i have an old LSI (megasr) fakeraid card. it forced me to use kernel 2.6.32, because XCP/xenserver's default kernel can't detect my harddrive, even after i've compiled the driver using its DDK. 

so i have to build xenserver from scratch from vanilla centos 6 (ouch). i've managed to compile xen 4.2.2 (*1) and  xen-api using rpms built by xen-api-rpm-buildroot(*2)

the problem is, i think the LVM SR Driver is not compiled in. so, how to add them?  i found the its repo in https://github.com/xapi-project/sm, but as its readme said, it can't be compiled using "make && make install" as usual.

cc -O2 -I/usr/include/python2.6/ -I/usr/include -shared xslib.o xslib_wrap.o -lxenstore -o _xslib.so

/usr/bin/ld: xslib.o: relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a shared object; recompile with -fPIC

xslib.o: could not read symbols: Bad value

collect2: ld returned 1 exit status

make[1]: *** [_xslib.so] Error 1

make[1]: Leaving directory `/home/ayik/sm/snapwatchd'

make: *** [install] Error 2

any clue how to compile xen-api SM ? and then of course how to configure it so that we can create LVM SR ?

*1) http://dev.centos.org/centos/6/xen-c6/SRPMS/

*2) https://github.com/xapi-project/xen-api-rpm-buildroot

PS:

just share some experience when building rpms from xen-api-rpm-buildroot:

1. the xen-ocaml* spec are overlapping with ocaml-xen-lowlevel-libs-* (plase see errors below). both are trying to install the same target

Transaction Check Error:

  file /usr/lib64/ocaml/xenstore/xenstore.a conflicts between attempted installs of ocaml-xenstore-devel-1.2.1-1.x86_64 and xen-ocaml-devel-4.2.2-23.el6.x86_64

  file /usr/lib64/ocaml/xenstore/xenstore.cmxa conflicts between attempted installs of ocaml-xenstore-devel-1.2.1-1.x86_64 and xen-ocaml-devel-4.2.2-23.el6.x86_64

2. there is some error when installing xenopsd-libvirt, but i don't know what the effect

  Installing : xenopsd-libvirt-0.9.21-1.x86_64                                                                                                                            125/261 

Non-fatal POSTIN scriptlet failure in rpm package xenopsd-libvirt-0.9.21-1.x86_64

error reading information on service xenopsd-libvirt: No such file or directory

warning: %post(xenopsd-libvirt-0.9.21-1.x86_64) scriptlet failed, exit status 1

-- 

Sayid Munawar

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