[Clug-tech] Moving Hardlinked Files Across File System.

[Jon]

I'm attempting this on Monday.

How to transfer the hardlinked files was only one of the issues. The 
other was finding enough space to move the files to. I think my most 
recent post about LVM Sanity Check will shed more light on where I'm at.

Once I have a target, I'll let you know how the copy goes :)

J

Gustin Johnson wrote:
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> Kinda curious how you made out with this.  What solution did you end up
> adopting?
> 
> Also, there are a few more options that you can set on rsync.  I will
> often use the blowfish algorithm as it seems to impose less overhead for
> bulk transfers.
> 
> To modify the original rsync command to synchronize two data directories:
> rsync avuH --progress --rsh="ssh -c blowfish -C" /path/to/local/data/
> user at host:/path/to/remote/data
> 
> Cheers,
> 
> Gustin Johnson wrote:
>> rsync -avuH --progress /path/to/source/data user at host:/path/to/destination
>>
>> Note that this syntax will create a folder in destination called data.
>> Also the above should be a single line.
>> the -H should preserve hard links.
>>
>> rsync --help
>> man rsync
>> for more info.
>>
>> Cheers,
>>
>> Jon wrote:
>>> Hello All,
>>> I have a RAID NAS that is currently holding 1TB+ of data. The NAS is 
>>> failing and I need to exchange it which necessitates getting the data 
>>> off of it. The data is your typical rsnapshot scenario in which a full 
>>> copy of the most recent data is in a daily.0 directory and data that has 
>>> not changed is hardlinked over a series of daily.01 to daily.30 directories.
>>> I know that hard links cannot survive across files systems so simply 
>>> copying the data to another 1TB RAID we happen to have on hand is not 
>>> going to work. The data will expand to somewhere around 10-15TB and we 
>>> do not have that kind of space anywhere. Therefore, I am looking for 
>>> alternatives.
>>> I have considered dd but it doesn't appear to be able to work with NFS 
>>> mounts - it seems to only want to read from devices.
>>> Does anyone have any bright ideas how I might get my data off this NAS 
>>> and preserve the hard links? I assume we're talking about binary copying 
>>> of some form...
>>> Thanks!
>>> Jon
>>
> 
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