[Info-vax] Unexpected error using ZIP for OpenVMS

AEF spamsink2001 at yahoo.com
Thu Jan 12 13:59:02 EST 2012


On Jan 5, 10:04 pm, AEF <spamsink2... at yahoo.com> wrote:
> On Jan 4, 9:18 am, koeh... at eisner.nospam.encompasserve.org (Bob
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> Koehler) wrote:
> > In article <9630a4cc-2498-4f33-be69-65c848946... at z25g2000vbs.googlegroups.com>, AEF <spamsink2... at yahoo.com> writes:
>
> > > Well, I'm pretty sure older versions can't. I believe this capability
> > > was added to VMS BACKUP around v6 or v6.2, but I'm not sure.
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> >    BACKUP has never failed me, going back to VMS 1.x on an 11/780.   I
> >    don't recall exactly when in there the ability to get to 16 directory
> >    levels was implemented for ODS-2 via rooted logicals, it might have
> >    been in some minor version that we skipped, but I don't recall a
> >    problem or a fix.  I think the ability to deal with it was added
> >    to BACKUP before the capability to have it shipped.
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> >    I very much recall using rooted logicals with no depth problems under
> >    VMS 5.2 through 5.5-2.
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> >    And yes, I do recall using DSC2 before BACKUP got /IMAGE.
>
> When I was in graduate school I sometimes used a VAX 11/780 located at
> the Computer Science Center. They had something like the following in
> their announcement banner:
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> Do not create directories more than six levels deep.
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> The used something like
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>     define user_disk disk:[users.]
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> so that already accounts for one level. I bet someone got burned by
> not having some really deep stuff covered by incremental backups! I
> remember one guy had something like USER_DISK:
> [LABYRINTH.LABYRINTH.LABYRINTH.LABYRINTH.LABYRINTH.LABYRINTH.LABYRINTH.LABYRINTH].
>
> An incremental backup would miss stuff in the deepest directory.
>
> Yeah, you could go 16 levels deep, but non-image BACKUP save
> operations would miss levels more than 8 deep.
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> Yeah, we're talking old, v3 or v4.
>
> Well, BACKUP may have never failed you back as far as v1.x, but that
> depends exactly what you needed from it!
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> Regardless, 8 or 16, an annoying limit.
>
> AEF

Still further even yet another limit!

$    NAME       = F$ELEMENT(01,TAB,INREC)
%DCL-W-BUFOVF, command buffer overflow - shorten expression or command
line

One offending line was 1058 bytes long.

AEF



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