Does single chain setting work?

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I have been backing up several partitions, generally as 2 version chains with a number of incrementals. I have one partition that is too large to do this (especially as I believe during the above you will have 3 full backups present concurrently). So I changed the setting to 1 chain.
So, with settings:
- Create a full version every 4 incremental versions
- Store no more than 1 recent version chains
I find I have one full and 9 incrementals!
So I change the settings to:
- Create a full version every 9 incremental versions
and run the backup - it creates a 10th incremental.

Looks like a bug to me. Anyone else seen this or know why it's happening?

Sab, 05/28/2011 - 15:44
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mvp

Robad,

Very often when users change the settings, ATI become confused and loses track of things.
Your settings are OK. Set them back to one full every 4 incremental. Just let ATI go through the motions until it creates a new full. Then it should be OK.

When you change the autocleaning options, ATI reset the counter in a weird way. If you setting was 6, you have done 3 and you change the setting to 7, you will get 10 before the next full. But if your setting was 6, you have done 3 and you change the setting to 4, you will get 4 total before the next full.
If it doesn't solve by itself, let us know.

Sab, 05/28/2011 - 16:14
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truwrikodrorowrelupicugojestutroclulachosaswunuhospikigawakijosaswenomaruclojeueclikaspedrubewidebrisubrohutrurifruuagothunugekedrumucisiuobrobrecrupeslapuswosluprothethibakaslechurathikucli
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Thanks Pat.

You're right. I changed the setting back to 4, ran the backup and it created a full backup and removed all the other files - as expected.

As a software engineer, I have seen operations suggesting:
a) No-one would ever select one chain, so who would think of testing it?
b) We have a novice programmer's error - checking for "equal to" instead of "greater than or equal to".

You have obviously done more thorough investigations! Thanks again.

Though why anyone would design it to work like this remains a mystery...

Sab, 05/28/2011 - 17:33