Kern Sibbald schrieb:
> When Bacula is scanning, listing, or restoring (depending on the exact 
> options) from a volume, it will read to the end of the volume, so with your 
> scheme, such operations will fail.

I don't mind if these operations would fail just during the moment when
bacula is about to recycle a volume since the old data is invalidated in
right that moment anyway.

> Because when a file is overwritten and not truncated, it ends at the original 
> size of the file, when a tape is overwritten, it ends at the end of the new 
> data.

Am I missing any arguments here? When I write 20MB on a 4GB tape, the
size of the tape will remain 4GB. When I write 20MB on a 10MB file, the
size of the file will become 20MB.

> No, good systems such as Linux do not fragment the disk nor do programs such 
> as Bacula fragment the disk.  The disk becomes fragmented only if there are 
> multiple processes writing the disk at the same time, or some files are 
> deleted.  The administrator (I used the word user in the last email) can 
> control this behavior if it is important.

Yes, this is a point. To let programs avoid backdraws instead of leaving
this to administrators is another.

Well, the world out there will not miss very much, wether bacula
truncates anything or not. But what I am really fed up with are arrogant
open source developers who think their users were too stupid.

/hm

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