A general rsync question

[Jim Nelson]

Bogart Salzberg wrote:
> I was also wondering about rsync-ing to a USB drive. For a "snapshot"  
> archive that uses hard links for unchanged files (like dirvish), is  
> it necessary to format the USB drive as ext2, ext3 or some other Unix  
> FS flavor? I imagine that it is. If so, will "make2fs -j /dev/<usb  
> drive>" work as expected?
> 
> Thanks,
> 
> Bogart
> 

Yes on both counts.

It looks like dervish works about the same as our in-house backup system, and I 
did the development of it on a USB drive and a laptop.  You will need ext3 or 
xfs - depending on the size of the drive - xfs is very fast with large-capacity 
drives.  However, it is not supported by the RHEL/CentOS "rescue" mode, so if 
you're planning on bare-metal restores, you'll have to use ext3.

P. S. - if you're really planning on using a USB drive with the server and 
you've got a PCI slot free, a USB 2.0 card will save you a lot of hassle and time.

> On Nov 28, 2007, at 4:47 PM, Jim Nelson wrote:
> 
>> John Bown wrote:
>>> Good afternoon everyone.  I have a PowerEdge 1600SC running SLES9  
>>> SP3.
>>> Do any of you know if it's possible to rsync said box directly to an
>>> external USB2 hard drive?  Many thanks.
>>>
>>> John Bown
>>>
>> Yes.  Barring things like /proc, it'll work just fine.  The SC1600  
>> does not have
>> USB 2.0, though, so it'll take forever and a day...
>>
>> I tend to do NFS export/gigabit switch/laptop with USB 2.0 for  
>> those occasions.
>>
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