Marcus Watts writes:
> I had the impression that AIX 4.1 supported file fragmentation.
> Ie, if the end of a file is much smaller than 4K (or whatever
> the allocation unit is on the filesystem), only *part* of
> a 4K block will be used to hold the end, and the remainder
> of the file will be used to hold the ends of several other files.
>
> Such change would (I should think) represent an incompatible
> change to the filesystem. If it's not, in fact, necessary to
> rebuild the filesystem, it would at least seem to be highly
> desirable.
>
> Does IBM supply some sort of conversion utility? Does it
> work even with AFS fileserver partitions?
31GB of functioning AFS partitions say that you can unplug a disk from
a 3.2.5 system and plug it into a 4.1.4 system and have it work. I have
fsck'ed all the filesystems under 4.1.4 (with AFS fsck, of course).
There seems to be some evidence here that you can't go the other way.
Another site at Cornell tried fsck'ing a 3.2.5 filesystem by booting
from a 4.1.4 CD. This filesystem was then unusable by the original
3.2.5 system. There could have been other problems, but this is
highly suggestive and fits well with your concern above.
-Rick
--
|Rick Cochran phone: 607-255-7223|
|Cornell Materials Science Center FAX: 607-255-3957|
|E20 Clark Hall, Ithaca, N.Y. 14853 email: [EMAIL PROTECTED]|
| "The Founding Fathers did not establish the United States as a |
| democratic republic so that elected officials would decide trivia, |
| while all great questions would be decided by the judiciary." |
| Judge Andrew Kleinfeld |
