+ if vref is None:
+ vref='default'
+ try:
+ ### locating the right slicefamily
+ # this is a first draft, and more a proof of concept thing
+ # the idea is to parse vref for dash-separated wishes,
+ # and to project these against the defaults
+ # so e.g. if the default slice family (as found in /etc/planetlab/slicefamily)
+ # is planetlab-f8-i386, then here is what we get
+ # vref=x86_64 -> vuseradd -t planetlab-f8-x86_64
+ # vref=centos5 -> vuseradd -t planetlab-centos5-i386
+ # vref=centos5-onelab -> vuseradd -t onelab-centos5-i386
+ # vref=planetflow -> vuseradd -t planetflow-f8-i386
+ # vref=x86_64-planetflow -> vuseradd -t planetflow-f8-x86_64
+
+ # default
+ default=file("/etc/planetlab/slicefamily").read().strip()
+ (pldistro,fcdistro,arch) = default.split("-")
+
+ known_archs = [ 'i386', 'x86_64' ]
+ known_fcdistros = [ 'f8', 'f9', 'centos5' ]
+ # from the slice attribute: cut dashes and try to figure the meaning
+ slice_wishes = vref.split("-")
+ for wish in slice_wishes:
+ if wish in known_archs:
+ arch=wish
+ elif wish in known_fcdistros:
+ fcdistro=wish
+ else:
+ pldistro=wish
+
+ # rejoin the parts
+ refname="-".join( (pldistro,fcdistro,arch) )
+
+ # check the template exists -- there's probably a better way..
+ if os.path.isdir ("/vservers/.vref/%s"% vref): refname = vref
+
+ if not os.path.isdir ("/vservers/.vref/%s"% refname):
+ logger.log("%s (%s) : vref %s not found, using default %s"%(
+ name,vref,refname,default))
+ refname=default
+ # reset so arch is right
+ (pldistro,fcdistro,arch) = default.split("-")
+ # could check again, but as we have /etc/slicefamily
+ # there's probably no /vservers/.vref/default
+
+ except IOError:
+ # have not found slicefamily
+ logger.log("%s (%s): legacy node - using fallback vrefname 'default'"%(name,vref))
+ # for legacy nodes
+ refname="default"
+ arch="i386"
+ except:
+ import traceback
+ logger.log("%s (%s) : unexpected error follows - using 'default'"%(name,vref))
+ logger.log(traceback.format_exc())
+ refname="default"
+ arch="i386"
+
+ logger.log_call('/usr/sbin/vuseradd', '-t', refname, name)
+ # export slicename to the slice in /etc/slicename
+ file('/vservers/%s/etc/slicename' % name, 'w').write(name)
+ # set personality: only if needed (if arch's differ)
+ if Sliver_VS.root_context_arch() != arch:
+ file('/etc/vservers/%s/personality' % name, 'w').write(Sliver_VS.personality(arch))
+ logger.log('%s: set personality to %s'%(name,Sliver_VS.personality(arch)))