Berkeley CSUA MOTD:Entry 16366
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2025/04/04 [General] UID:1000 Activity:popular
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1999/8/21-24 [Computer/SW/Unix] UID:16366 Activity:moderate
8/21    Can Sun's Disk Suite mirror the root filesystem?  I know that
        Veritas Volume Manager can...
                \-yes
                \_ yes.. there's docs explaining exactly how to do it -shac
                  \_ Any pointers to where in the docs this is?  the
                     only thing that I was able to find said
                     specifically that metadisks could NOT be used on
                     /, /var, /usr, or any other partition that was
                     used to boot the system.  The docs also said that
                     mirrors were comprised of metadisks.... Thanks
                     for any help.
                        \-if you say so ... look in the ODS package area
                [in /usr/opt,probably] and the CD for docs. --psb
                /dev/md/dsk/d4        771110  124853  592280    18%    /
                /dev/md/dsk/d3       2108986  623245 1422472    31%    /usr
                /dev/md/dsk/d2       1603526  270107 1285314    18%    /var
                \_ You sure you're not looking in old docs?  Older versions
                   of disksuite couldn't mirror /, /usr, etc. but that
                   restriction was lifted around Disksuite 3.0 or 4.0
                   (Solaris 2.4/2.5 timeframe)
                        \-you know mirroring the boot disks might not be a good
                        idea if you really are not reasonably familiar with
                        disksuite. --psb
                                \_ Well, I'm trying to BECOME familiar
                                   with it, so that I can effectively
                                   use it.  That's why I'm looking for
                                   the docs.
                                   \_ http://docs.sun.com --jon
                        \_ even when set up correctly, it can have some
                           nasty side effects.  I had that set up once
                           and in a weird situation, i had filesystem
                           corruption on one disk.  this was mirrored
                           on the second disk.  barring that, it also
                           saved my ass when a disk died and I had  a
                           4 day cpu job running.    -jon
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