Data recovery emergency on a downed server... Help please!!

Madison Kelly linux-5ZoueyuiTZhBDgjK7y7TUQ at public.gmane.org
Tue Dec 30 21:12:09 UTC 2003


Thank you for the info on 'star', I didn't know about that and it 
definately is a bonus. Thanks!

Madison

Ilya Palagin wrote:
> Madison Kelly wrote:
> 
>> Yep, still under OE (*shudder*)
>>
>> Thanks for the suggestion, Walter. I did make a copy of the tar.gz 
>> file but
>> I got nothing useful out of it. I am still waiting now for the darn
>> activation code for a MS-based ext3-aware data recovery tool... Maybe 
>> that
>> will finally crack my rough luck thus far - if it ever arrives!
>>
>> Tom, thanks for the note about gunzip -c being the same as zcat. I 
>> will make
>> another backup and give that a go, though my hopes are narrow... Oh, and
>> given the current state of my hardware; I certainly would not trust my 
>> tape
>> to make another dump so Walter's suggestion is/was valid.
>>
>> Madison (who has passed the 24hours mark and wishes she could just get a
>> break and then go home!!)
> 
> 
> For your daily backup operations, a recommend you to use star instead of 
> tar. star has a nice "diff" option, which allows to verify backups. Like 
> tar, it's multiplatform, so you can take your tapes to a friend with the 
> same tape drive and try to restore data on his system to make sure that 
> your backups make sence.
> 
>>
>> ----- Original Message ----- From: "Tom Legrady" <legrady-bJEeYj9oJeDQT0dZR+AlfA at public.gmane.org>
>> To: <tlug-lxSQFCZeNF4 at public.gmane.org>
>> Sent: Monday, December 29, 2003 6:30 PM
>> Subject: Re: [TLUG]: Data recovery emergency on a downed server... Help
>> please!!
>>
>>
>>
>>> Don't use zcat to decompress a file ... use the appropriate tool,  
>>> gunzip:
>>>
>>> gunzip file.tar.gz
>>> ls file.tar
>>>
>>> NB. gunzip -c file.tar.gz is identical to zcat/
>>>
>>>
>>> He already has a backup of the tar.gz ... it's called a tape
>>>
>>> Tom
>>>
>>> Walter Dnes wrote:
>>>
>>>
>>>> On Mon, Dec 29, 2003 at 10:51:45AM -0500, Madison Kelly wrote
>>>>
>>>>
>>>>
>>>>
>>>>> PS - I got a dd of th last tape that ran (finally) and it is about 
>>>>> 3.6GB
>>>>> (about right). I extracted it as a tar.gz (which should work) but it
>>
>>
>> fails
>>
>>>>> claiming to not be a gzip archive... Any ideas on that front by 
>>>>> chance?
>>>>>
>>>>>
>>>>
>>>> *MAKE A BACKUP COPY OF THE TAR.GZ FILE FIRST* !!!
>>>>
>>>> Straight from the man page...
>>>>
>>>>
>>>>
>>>>>      tar -xvvzf foo.tar.gz
>>>>>             extract gzipped foo.tar.gz
>>>>>
>>>>>
>>>>
>>>> ..did you remember the "z" parameter ?
>>>>
>>>> I've had similar problems with tar.bz2 archives.  I find that doing it
>>>> one step at a time works.  Note, you will need a *LOT* more diskspace.
>>>>
>>>> Step 1) zcat filename.tar.gz > filename.tar
>>>> The "zcat" executable is named "gzcat" in some versions.  Use whichever
>>>> one works on your system.
>>>>
>>>> Step 2) tar -xvf filename.tar


--
The Toronto Linux Users Group.      Meetings: http://tlug.ss.org
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml





More information about the Legacy mailing list