Les Mikesell wrote:
> Matthias Meyer wrote:
>> Matthias Meyer wrote:
>>
>>> Hi,
>>>
>>> I use BackupPC 3.1 and rsyncd.
>>> If an incr Backup aborts, e.g. because of lost network connections, all
>>> of the data, which was copied into the /new directory, will be deleted.
>>> The next time an incr backup runs, all the work (compare and transfer)
>>> must be done again.
>>>
>>> What is the reason for this behavior?
>>> Is there a posibility to save the already saved data and reuse it for
>>> the next backup in a similiar way as in interupted full backups?
>>>
>>> Thanks in advance
>>> Matthias
>>
>> I tried to move the data (/new, /NewFileList, /XferLOG.z) to another
>> place by the DumpPostUserCmd if $type == incr and $xferOK == 0.
>> This part works fine.
>> In the DumpPpreUserCmd I move the data back to its original place if
>> $type == incr and saved data exists.
>> This part works fine too.
>> But the following rsync process transfers the already transfered files
>> again.
>> It seems that rsync, at least within an incremental mode, did not compare
>> the files against the /new directory.
>>
>> In the next step I will try to move the /new directory to a /<number>
>> directory, update the /backups file and run BackupPC_link during the
>> DumpPostUserCmd.
>>
>> Is there any reason to not do that?
>
> Rsync incrementals are based on the previous full unless you are using
> incremental levels, so even if the backup had completed it wouldn't be
> used for
> comparison in the next run. If this is a frequent problem for you,
> perhaps you
> should make all of the backups fulls. This will take longer because of
> the
> checksum comparisons but not much more bandwidth. Then partial backups
> would be reused and you would not transfer multiple copies of files for
> each incremental.
>
Yes I know. I use incremental levels (because I do not understand any
advantage of not using it ;-)
br
Matthias
--
Don't Panic
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