SUMMARY: SunOS 4.1.3 disks moved to Solaris 2.2?!?

From: Richard Bainter (
Date: Thu Nov 04 1993 - 07:06:13 CST

In article <2b8d0v$>,
Richard Bainter <> wrote:

Good Morning,

  I'd like to thank everyone who's responded. It seems that this is
  completely possible, and of course I'll make a full dump before trying


> We've got a bit of a question here. We are getting ready to move 24
> gig of diskspace from a SunOS 4.1.3 machine to a Solaris 2.2 machine
> and although we are going to back it up, we don't wanna *have* to
> restore it. Has anyone tried this? The only thing we've heard on this
> was that any filenames longer than 8 characters are truncated. Why?
> Can anyone elighten me in this area since it happens Saturday? We've
> seen mention of formatting disks on Solaris 2.2 then moving them to
> SunOS 4.1.3 (to get around the 2 gig problem), but we haven't seen any
> mention of moving fully loaded disks.

I'd like to thank the following people: (Robert Ogren) (Casper H.S. Dik) (Kevi...) (David C. Niemi)
 and anyone elses that I haven't gotten yet.

What I feel was the most useful piece of information was the following
from Casper Dik:

  SunOS 4.1.x disks (That is 4.1.x, not 4.0.x or earlier) can be attached
  to Solaris 2.x machines without problem, as long as the disks interoperate
  with Solaris. (SCSI is some kind of black magic, there's no predicting
  which disk will work with which computer until you try it)

  SunOS 4.0.x filesystems can be used on SunOS 5.x, provided they have
  been converted to 4.1.x filesystems on 4.1.x hosts.

  If you're not sure whether the disk was newfsed under 4.1.x or earlier,
  you can try the following commands on a 4.1.x host:

          # dumpfs /dev/<disk> |head -1
          magic 11954 format dynamic ...

  If the format is dynamic, the disk can be used on SunOS 5.x.
  If the disk format is static, it needs to be converted with fsck -c.
  (This should only be done on unmounted filesystems). fsck -c is
  only in SunOS 4.1.x, so this should be done on the SunOS 4.1.x host.
  See fsck(8) for details.


Richard Bainter          Mundanely     |    System Analyst        - OMG/CSD
Pug                      Generally     |    Applied Research Labs - U.Texas
Note: The views may not reflect my employers, or even my own for that matter.

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