So why does {Open}Solaris have boot environments ?.
Which I can attest can save your arse - "rolling back" is the equivalent of
backing out an IPL to a previous resvol.
Fedora 13 introduced similar (automatic) snapshot functionality (on btrfs)
for yum updates. I'll get around to testing it sometime.
As in most things we've been doing for years, they are slowly being
"discovered" in that other world.Shane ... On Thu, Sep 30th, 2010 at 9:51 PM, "McKown, John" wrote: > Though I agree with you on this, I can see where someone could have a > different mind set on it. In particular, I am thinking of how maintenance > is done on my Fedora13 Linux system. I don't have an alternate boot disk > that is updated. I update the "running" system. Of course, this is > possible because of the way that Linux is designed. And that it is much > simpler than z/OS. The equivalent of IPL text is the MBR on the selected > device. That boots GRUB (or LILO) which is a small OS (NIP equivalent?) > which can display a boot menu (like z/VM does if you want). It then can > load a complete RAM image of the boot LINUX system, which is smart enough > to get the rest of the system going. This allows for booting different > versions of the LINUX kernel. Of course, Linux is __significantly__ > simpler than z/OS. Just as z/VM is much simpler than z/OS and so has a > similar CPLOAD facility to select different versions of z/VM to boot from > a single IPL pack. > > Somebody from a LINUX environment could well consider z/OS maintenance to > be a nightmare! ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
