Re: [BackupPC-users] "Full" backup
2009-05-23 02:41:50
Holger Parplies wrote:
> 1.) That is what you are requesting BackupPC to do.
> If you want your backups to depend on a different reference point
> than the previous full backup, you can use IncrLevels. An incremental
> backup *can* miss changes. That is highly unlikely with rsync but
> remains possible. With increasing level, chances increase. So, doing
> *exactly* as requested makes sense.
> As with any backup scheme, only full backups are completely reliable.
How can it miss changes? How do full backups fix it?
> 2.) Backup dependencies
> A level 1 backup cannot depend on any other level 1 backup (because this
> other backup can - and probably will - expire first).
This is something else I don't understand. Why does it create
dependencies? I thought BackupPC did something functionally equivalent
to my hand-links method. With my method, I can safely delete any daily
backup with full confidence that the others won't be affected, as I'm
just deleting hard links. As long as a block of data has at least one
hard link pointing to it (ie. as long as I need it) the file will be
safe. I thought that BackupPC did something that was functionally
equivalent with its pooling thing.
Daniel.
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