Veritas-bu

[Veritas-bu] How do de-reference symlinks?

2006-10-06 09:46:22
Subject: [Veritas-bu] How do de-reference symlinks?
From: jpiszcz at lucidpixels.com (Justin Piszcz)
Date: Fri, 6 Oct 2006 09:46:22 -0400 (EDT)
Thanks for all the suggestions!

Justin.

On Fri, 6 Oct 2006, Christopher Jay Manders wrote:

> Hi Justin,
>
> It is true that the list did not help at the time...and I forgot to post my 
> solution.
>
> The issue was:
> - Symlinks restored without the data they pointed to will not be restored. It 
> is NBU standard stuff, unfortunately. I have asked for an enhancement with 
> Veritas. You should add your vote, as they say they do NOT need it...even 
> though modern day GNU tar has such an option. The reason, I think, is so that 
> they can sell you their FlashBackUp product, which DOES dereference the 
> symlinks...but forces one into RAW backups. Luckily they did add in an INCR 
> backup type with Flashbackup.
>
> SOLUTION:
> BUY this FlashBackUp product. It definately DOES work. However, like other 
> RAW backups, it backs up the ENTIRE partition even if EMPTY.
>
> There are also some *small* gotchas with FlashBackup, and the setup in our 
> case was non-trivial. BUT, after weeks and weeks of hair pulling, it is doing 
> what we want and restores are zipping along fine, including our copious 
> symlinks.
>
> The thing FlashBackUp does is create an inode map, and when restoring uses 
> that to do the de-referencing.
>
> Hope you enjoy this data as much as we did!
>
>
> Cheers!
>
> --Chris
>
>
>
>
>
>
>>> From CJManders at lbl.gov  Sun Feb 12 16:13:42 2006
>> From: CJManders at lbl.gov (Christopher Jay Manders)
>> Date: Sun, 12 Feb 2006 08:13:42 -0800
>> Subject: [Veritas-bu] Is GNU tar --dereference option available?
>> Message-ID: <43EF5EB6.1010705 at lbl.gov>
>> 
>> Hi,
>> 
>> So, we want to actually back up any data that is contained in symbolic
>> linked material on one set of systems.
>> If I were to use GNU tar I would specify the '--dereference' option.
>> 
>> Anyone know whether this is supported, or will be, in NBU?
>> 
>> 
>> TIA!
>> 
>> --Chris
>> 
>> 
>> Nobody answered him :(
>> 
>> Justin.
>> 
>> On Fri, 6 Oct 2006, Justin Piszcz wrote:
>>
>> 
>>> I have a directory with 10 symlinks:
>>> 
>>> $ ls
>>> 1 -> /dir/1
>>> 2 -> /dir/2
>>> ..
>>> 10 -> /dir/10
>>> 
>>> I went through all of the 5.1 manuals but did not find anyway for 
>>> NetBackup to de-reference symbolic links to their destinations, am I 
>>> missing something here or is it not supported?
>>> 
>>> Justin.
>>>
>>> 
>> _______________________________________________
>> Veritas-bu maillist  -  Veritas-bu at mailman.eng.auburn.edu
>> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>> 
>
>

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