[Info-vax] SHO DEV xxx/FILE on LD devices

[hb]

On Jul 6, 1:28 am, Johnny Billquist <b... at softjar.se> wrote:
> On 2011-07-05 23.46, Hans Vlems wrote:
>
>
>
> > On 5 jul, 23:37, Jan-Erik Soderholm<jan-erik.soderh... at telia.com>
> > wrote:
> >> Bob Koehler wrote 2011-07-05 19:30:
>
> >>> In article<iuutf2$cq... at news.albasani.net>, Jan-Erik Soderholm<jan-erik.soderh... at telia.com>    writes:
> >>>> Hi.
> >>>> Can someone tell why the below happens.
>
> >>>> $ dism/abo $1$lda1:
> >>>> %DISM-W-CANNOTDMT, $1$LDA1: cannot be dismounted
> >>>> %DISM-W-INSTIMAGE, 2 images installed on volume
>
> >>>> $ sh dev $1$lda1:/file
>
> >>>> Files accessed on device $1$LDA1: (OSSBY1) on  5-JUL-2011 13:29:49.84
>
> >>>> Process name      PID     File name
> >>>>                    00000000  [000000]INDEXF.SYS;1
> >>>> $
>
> >>>      Are you using a prvilegdge account, or at least one that has access
> >>>      to the directory path and files?
>
> >>>      I'm not sure about this one, but some VMS utilities will not show
> >>>      the names of files that a particular user doesn't have access to.
>
> >> It was SYSTEM. But I think it was simply the fact that the files
> >> had never been opened since installed. And thus didn't show up
> >> as an opened file. But on the other hand, I *thought* that *all*
> >> installed files showed up as files with no process-name in the
> >> SHO DEV/FILE list...
>
> >> Anyway, this is not an issue.
>
> > Contact Jur van den Burg atwww.digiater.nl:he's the author and
> > maintains LD.
>
> This has nothing to do with the LD device. It's a standard behavior of VMS.
> "Opened file" means open right now. Not "have been opened sometimes in
> tne past", nor "installed". It means it's currently open by a process.
> An installed file is an installed file, which is something else.
> You must remove files from being installed before you are allowed to
> dismount a device. If a file is open on the device, VMS can either
> complain, or else mark the device for dismount, which will be completed
> when all files have been closed. I don't remember which way VMS actually
> do it.
> But what was shown by the original post is completely natural, and to be
> expected if usage matches.
>
>         Johnny

Just to summarize what previous posters already said ...

>From the help of SHOW DEVICE /FILES:
Displays a list of the names of all files open on a volume and their
associated process name and process identification (PID).

INSTALL ADD file-spec makes a file known (creates a KFE - a Known File
Entry). Although not widely known, this can be done with any file.
However, a known file is not open. So files installed that way do not
show with SHOW DEVICE /FILES. Obviously you can not dismount the
device while there are known files for that device. INSTALL LIST has
no way to show the installed files per device. You may want to
redirect INSTALL's output and search for the device, like in:
$ PIPE INSTALL LIST |SEARCH SYS$INPUT DISK$TMP/WINDOW=(0,999)/PAGE

INSTALL ADD/OPEN file-spec makes an image file known and permanently
open. Image files installed that way are shown with SHOW DEVICE/FILES.

>From the help of SHOW DEVICE /FILES:
If the /SYSTEM qualifier is also specified, only the names of
installed files and files opened by the system are displayed.

This may be confusing. /SYSTEM limits the output of open files to
image files installed with /OPEN and the files opened by the system.