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

[JF Mezei]

Am starting to suspect BACKUP having problems with very large INDEXF files.

I restored one file from the saveset to my sys$login, and then compared
it with that on the suspect disk.

$ diff
dqb0:[000000.ALLIN1.CBI_BRITISH]CBIQFIRST.SCP;1 sys$login:cbiqfirst.scp
Number of difference sections found: 0
Number of difference records found: 0

DIFFERENCES /IGNORE=()/MERGED=1-
    DQB0:[000000.ALLIN1.CBI_BRITISH]CBIQFIRST.SCP;1-
    SYS$SYSROOT:[SYSMGR]CBIQFIRST.SCP;1


yet...

When I first ran BACKUP/COMPARE , it issued verification warnings for
blocks 5 onwards of that file. And now, when I run backup/compare, it
issues warnings for different files but not the above file.


Right now, I am thinking of using Steven Schweda's ZIP utility to zip
each directory separately with the output on the NFS drive, and if
satisfied, I will do an INIT of that disk and restore from the ZIP archives.


The fact that backup tells me 2 files are different when diff says they
are not and when TYPE shows a perfect text file gets me worried.

This is on alpha VS 8.3. It is a shame that people like Guy Peleg no
longer works for the owner of VMS since such real engineers might be
interested in finding out why BACKUP shows errors where there doesn't
appear to be errors.