[Lustre-discuss] clarification on mkfs.lustre options

[Sebastian Gutierrez]

>> I have found some mention on lustre-discuss that using a tool that does a backup of the xattrs is preferable.  I am assuming that the cp -a should be sufficient since it is supposed to preserve all.  In the lustre-discuss articles I only saw a mention of the patched tar and rsync.  Is there any reason not to trust cp?
> 
> If your co copies xattrs then great. I would verify this is correct by listing xattrs on both the old and new objects and comparing them. 
> 
> In newer Lustre rpms is ll_decode_filter_fid, which will format  the OST object xattrs nicely. 
> 
> Cheers, Andreas

The cp -ar worked fine.  

Thanks Again

Sebastian