<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 11 (filtered medium)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> I am building a network appliance based on linux. I want this appliance to have three bootable partitions, a recovery partition and two runtime partitions (designated 0 and 1).<o:p></o:p> <o:p> </o:p> To simply manufacturing as well as to facilitate functional testing in virtual hardware, I want to build a bootable ISO that I can use to either initialize new hardware or to initialize virtual hardware with all three partitions. I have decided to use kickstart/anaconda to automate the install process.<o:p></o:p> <o:p> </o:p> I have succeeded so far in constructing a netstg2.img that uses a “shim” anaconda to invoke the “real” anaconda twice in succession, but with different ks.cfg files, and then invoke partimage to duplicate image0 to create image1.<o:p></o:p> <o:p> </o:p> My new netstg2.img works perfectly, but success with stage2.img and ISO/CD installs (as opposed to network-installs) is eluding me.<o:p></o:p> <o:p> </o:p> My shim anaconda is included below (the original 10.2.1.5-2 anaconda has been copied to /usr/bin/anaconda.orig).<o:p></o:p> <o:p> </o:p> My problem is the following…<o:p></o:p> <o:p> </o:p> When running under netstg2.img the ‘reset_mounts’ function correctly umounts the ks.cfg defined partitions, and removes all of the anaconda-created device nodes allowing anaconda to be run a second time with a different ks.cfg.<o:p></o:p> <o:p> </o:p> However when running under stage2.img, the ‘reset_mounts’ functions fails to umount the “/mnt/sysimage” partition with a “Device Busy” error. Furthermore switching to the alternative tty and issuing ‘umount /mnt/sysimage’ also results in a Device Busy error.<o:p></o:p> <o:p> </o:p> I am sure the problem is a subtle different in the way stage2 operates from netstg2, but I at a loss as to what it could be.<o:p></o:p> <o:p> </o:p> --<o:p></o:p> James<o:p></o:p> <o:p> </o:p> <o:p> </o:p> --------------------------------------------<o:p></o:p> #!/usr/bin/python<o:p></o:p> import os<o:p></o:p> import sys<o:p></o:p> <o:p> </o:p> # If this is a syslogd request, handle it<o:p></o:p> if sys.argv[1] == '--syslogd':<o:p></o:p> os.execv('/usr/bin/anaconda.orig', ('syslogd',sys.argv[1],sys.argv[2],sys.argv[3]))<o:p></o:p> <o:p> </o:p> method = ‘cdrom’<o:p></o:p> <o:p> </o:p> def _invoke(cmdpath, args):<o:p></o:p> pid = os.fork()<o:p></o:p> if not pid:<o:p></o:p> os.execv(cmdpath, args)<o:p></o:p> os.waitpid(pid, 0) <o:p></o:p> <o:p> </o:p> def do_anaconda(imageName, args):<o:p></o:p> nargs = args[:]<o:p></o:p> # .. other stuff to change arg list to load a dynamically generated ks.cfg<o:p></o:p> _invoke(‘/usr/bin/anaconda.orig’,[‘anaconda’,]+list(nargs))<o:p></o:p> <o:p> </o:p> def reset_mounts(zapdevices=True):<o:p></o:p> # if CD install create CDROM mount point <o:p></o:p> if method == “cdrom”:<o:p></o:p> os.mkdir(“/mnt/cdrom”)<o:p></o:p> <o:p> </o:p> # Unmount sysimage mounts (‘maint’,’data’,’image0’,’image1’ are all partitions created in ks.cfg)<o:p></o:p> sysMounts = (‘dev’,’selinux’,’sys’,’proc’,’boot’,’maint’,’data’,’image0’,’image1’)<o:p></o:p> for m in sysMounts:<o:p></o:p> _invoke(‘/usr/bin/umount’,(‘umount’,’/mnt/sysimage/%s’%m))<o:p></o:p> _invoke(‘/usr/bin/umount’,(‘umount’,’/mnt/sysimage’))<o:p></o:p> <o:p> </o:p> # /dev/hdc7 is provisioned as the swap partition in ks.cfg<o:p></o:p> _invoke(‘/usr/bin/swapoff’,(‘swapoff’,’/dev/hdc7’))<o:p></o:p> <o:p> </o:p> # Drop device nodes<o:p></o:p> deviceGlobs = (‘/dev/hdc*’,’/dev/md*’,’dev/sda*’,’dev/initctl’,’/dev/mapper’,’/dev/log’,’/dev/hdc*’)<o:p></o:p> if zapdevices:<o:p></o:p> map(lambda x: _invoke(‘/usr/bin/rm’,(‘rm’,’-rf’,x)), deviceGlobs)<o:p></o:p> <o:p> </o:p> if method == ‘cdrom’:<o:p></o:p> _invoke(‘/usr/bin/mount’,(‘mount’,’/tmp/cdrom’,’/mnt/source’))<o:p></o:p> os.unlink(‘/tmp/cdrom’)<o:p></o:p> <o:p> </o:p> try:<o:p></o:p> args = sys.argv[1:]<o:p></o:p> <o:p> </o:p> # Run anaconda on maint<o:p></o:p> do_anaconda('maint',args)<o:p></o:p> <o:p></o:p> # Run anaconda on image0<o:p></o:p> reset_mounts()<o:p></o:p> do_anaconda('image0',args)<o:p></o:p> # .. other stuff to canonicalize maint and image0, update grub<o:p></o:p> <o:p> </o:p> # Capture image0 and duplicate to image1<o:p></o:p> reset_mounts(zapdevices=False)<o:p></o:p> # .. other stuff to use partimage to copy image0 to image1 and canonicalize image1<o:p></o:p> <o:p> </o:p> except:<o:p></o:p> print "%s %s\n%s" % (sys.exc_info()[0],sys.exc_info()[1],repr(sys.exc_info()[2]))<o:p></o:p> <o:p> </o:p> # Done<o:p></o:p> print "Press any key to reboot"<o:p></o:p> sys.stdin.readline()<o:p></o:p> sys.exit(0)<o:p></o:p> ----------------------------------------------<o:p></o:p> <o:p> </o:p> </div> </body> </html>