[Info-vax] Odd BACKUP error: unsupported file structure !

[AEF]

On Nov 10, 5:06 am, JF Mezei <jfmezei.spam... at vaxination.ca> wrote:
> Alpha VMS 8.3, the source disk is ODS5
>
> backup/image/ignore=interlock disk1: lda2:/init
>
[...]

> BACKUP is being extremely slow and also slows down disk accesses in
> another DCL process  despite CPU being at 0 and the disk IOs being
> generally below 1 operation per second (sometimes peaks to about 25-30
> for a short time)
>
> Also, Backup is only using a working set of about 1200 pages. Isn't
> backup supposed to use over 10k pages to make itself more efficient ? Or
> was that only on VAX ?

FWIW:

When I used to make tape backups of disk on MicroVAX 31xx's, I found
that WSQUOTA should be 1024, IIRC. Making it bigger actually slowed
things down.

AEF