Re: tar failure

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On 07/16/2017 11:07 AM, Patrick Dupre wrote:
> Hello,
> 
> Thank for the response.
> I do not know what is the previous error.
> I am checking the list, but is not going to tell what is the error.
> I cannot scroll back
> 
> I was speaking about the logic of the order of the file
> are taken from the directory,
> Not alphabetic ordering
> not date ordering.
> 
> Then, I cannot guess what is missing.
> It is an emergency archive, because the disk is failing.

Tar does an alphabetical sort of the top level of the directory you're
tarring up. When it hits a directory, it descends down that tree and
repeats the process (alphabetical sort, descend directory, etc.) until
all files/directories are completed in that branch, then goes back up
and continues. It's not like find (which sorts on inode numbers by default).

Without a log of the transaction, there is absolutely no way we can
offer help as to what the error was. This is precisely why you should
use the "v" flag to tar and save stdout/stderr to a logfile, something
like:

	tar cvf name-of-tar-file.tar * >/some/dir/tar.log 2>&1

It's the only way to ensure you capture errors. Same thing goes for
rsync, cpio, gzip, or virtually any stream-type archiver. Find the
"verbose" flag and redirect stdout/stderr to a log file.

What was it Reagan said? "Trust, but verify!"

>> Sent: Sunday, July 16, 2017 at 7:55 PM
>> From: "Samuel Sieb" <samuel@xxxxxxxx>
>> To: users@xxxxxxxxxxxxxxxxxxxxxxx
>> Subject: Re: tar failure
>>
>> On 07/16/2017 10:52 AM, Patrick Dupre wrote:
>>> I got: tar: Exiting with failure status due to previous errors
>>> How can I finish the process?
>>> I do not want to restart the tar, I only would like to tar the rest
>>> (directory).
>>
>> It usually doesn't stop at the error, that's why it says "previous 
>> errors".  It's just telling you that somewhere along the way there was 
>> an error, but it finished anyway.
>>
>>> I do not see the logic that tar uses to create the archive
>>> Can I guess this logic? and only tar the missing ?
>>
>> I don't understand this question.  If you wanted to know what happened, 
>> you'll have to either scroll back or save the output while it is running.
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-- 
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