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VxVM-3.5 "vxplex" question
Hey.
I'm in a situation in which I'm having to bone up on a bunch of VxVM stuff w/o access to a system: doing it all by reading Veritas manuals and SunOS/VxVM man-pages on the web, and taking notes (which helps me learn). A few weeks ago, I looked for Veritas-dedicated Usenet groups and found none (on Google groups); so, I'm sending to y'all in the hope that a bunch of VxVM experts contribute here. If you think there's a better place for me to ask my VxVM questions, please let me know. One big catch, to my studying the way I am, is the typical inconsistencies in the ways the documentation-writers have expressed the various concepts and meanings of things, plus the holes (the things they mostly or completely leave out). Right now, here's the thing that's bothering me most: Looking at the VxVM-3.5 Admin Guide (PDF) and at the vxmend(1M) and vxplex(1M) man-pages from docs.sun.com, it is *VERY* unclear as to the distinction between "detaching a plex", as with the command "vxplex det plex_name", and "offlining a plex", as with the command "vxmend off plex_name". It is clear that the latter changes the plex's "STATE" (vxprint output) to "OFFLINE" but it is *not* clear that the former does not also do so, or, if not, what "STATE" the former does change the STATE to. I *do* understand about following up "vxmend off" (STATE set to OFFLINE) with "vxplex att" (STATE set to STALE) and then "vxvol start" (by hand or during reboot) to get the plex back up & running with the rest of its volume's components. But would/could I ever use "vxmend off" and "vxplex det" for precisely the same situation and intentions, or must I use "vxmend off" for one set of situations and "vxplex att" for a completely different set of situations; or are some situations different and others overlap? TIA for anybody's help with this!!! ##################### John Reed Avery KNOW THYSELF aude sapere --------------------------------- Check out: http://www.ThisIsTrue.com/ http://www.StellaAwards.com/ http://www.HeroicStories.com/ |
#2
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Well everybody, I think I figured it out on my own. It was right there
in front of me the entire time but it was expressed as two separate and casual comments, amongst a bunch of other info. According to each the VxVM-3.5 Admin Guide and the VxVM-4.0 Admin Guide: * When you do a "vxmend off" command, the plex's STATE (vxprint output) is set to OFFLINE and the plex is *not* automatically recovered upon the next reboot or the next manual running of the "vxvol start" command. * When you do a "vxplex det" command, the plex's STATE (vxprint output) is set to STALE and the plex *is* automatically recovered upon the next reboot or the next manual running of the "vxvol start" command. Thanks and sorry for wasting the bandwidth. :-/ --JRA |
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