[Info-vax] Compressed backup summary information retrieval

[Chris Townley]

On 13/07/2022 21:55, abrsvc wrote:
> On Wednesday, July 13, 2022 at 4:48:27 PM UTC-4, abrsvc wrote:
>> On Wednesday, July 13, 2022 at 4:35:15 PM UTC-4, Rich Jordan wrote:
>>> I would just like to say that I wish whoever decided that a backup saveset's summary information data should be compressed when the backup was performed with compression enabled... well... wish they had left the summary block info alone.
>>>
>>> Going to have to use a backup/list pipe and search for the date and blocksize lines.
>>>
>>> Is there a quick and easy way to just read the first block or two and decompress it? The backup lists take a lot longer to run that just plucking the data data out of the summary and converting it
>> I haven't tried this, but the docs suggest that this should work...
>>
>> Try BACKUP/LIST x.sav/sav nl:/confirm
>>
>> This should list what you are looking for and prompt for what to do with the first file waiting for a response. Ctrl-Y out of it at that point.
>>
>> Dan
> Just tried this and if you replace the nl: with a valid directory, you will get the header from the /list and a confirmation request beforethe first file is processed.
> 
> NLA0: is not a valid output spec for backup.
> 
> Dan

I  think NLA0: was OK in certain circumstances. Under VMS 6 we used the 
following to delete the contents of large directories:

$ backup/delete/nolog/ignore=nobackup 'P1':*.*;* /excl=.dir nla0:x.x/save

Not needed later on I64

-- 
Chris