BackupPC-users

Re: [BackupPC-users] Problems with hardlink-based backups...

2009-09-01 01:21:05
Subject: Re: [BackupPC-users] Problems with hardlink-based backups...
From: Les Mikesell <lesmikesell AT gmail DOT com>
To: "General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>
Date: Tue, 01 Sep 2009 00:18:12 -0500
Peter Walter wrote:
> Jim Leonard wrote:
>> Peter Walter wrote:
>>   
>>> I have access to "cloud storage" I would like to take 
>>> advantage of, but can't because of the hardlink issue. My (klugey) 
>>> solution at present is to use a backuppc server to backup the backuppc 
>>> server, but even incrementals take days to run.
>>>     
>> What is the problem with your cloud storage such that you can't use it 
>> to make a backup of BackupPC?  What cloud storage do you have access to, 
>> and what operating system and filesystem are you using to run BackupPC?
>>   
> I have not (yet) come across a cloud storage provider who supports 
> hardlinks. The specific provider I was talking about is rsync.net.
> For all the backuppc servers I (currently) administer, the OS is Centos 
> 5.x, and the filesystem is ext3.

Is there a limit to the file size?  Why not put an image copy of your archive 
filesystem in a file?  Or for an interesting variation, make a vmware vmx 
virtual disk split into 1 or 2 gig file segments locally, image copy to that, 
then rsync the segments off somewhere else.  If you are lucky, there won't be 
changes in all the segments on every run and by splitting it you greatly reduce 
the workspace needed by rsync as it constructs a new copy of each file before 
deleting the old one.   But can you live with the time it would take to copy 
your data back from cloud storage if you ever need it?

-- 
   Les Mikesell
    lesmikesell AT gmail DOT com

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