On 01/18/17 17:46, Matt Raso-Barnett wrote:
> Hello,
> I was wondering if anyone on the list is using robinhood in a disaster
> recovery scenario? Both loss of MDT or OST would be interesting to me,
> as this is something we are looking at testing out if we can do this
> on one of our filesystems that we are doing continual archival on via
> LHSM.
>
> I found the mailing list thread from 2015 discussing the same topic:
> https://sourceforge.net/p/robinhood/mailman/message/34331280/ and the
> disaster recovery guide mentioned there.
Hello,

Disaster recovery features described in the 2015's recovery guide for 
v2.x have not all been ported to 3.0.

However, you can still use:
* rbh-diff [--apply], to check/apply differences between the state saved 
in rbh DB and the filesystem.
* use rbh-report or rbh-find to list entries on damaged OSTs
* use rbh-undelete to recover a lost entry that has been previous archived.

HTH
Thomas

>
> We are using Robinhood 3 with Lustre 2.7 at the moment, and it doesn't
> sound like the strategy described works any more for MDT recovery
> maybe?
>
> Is there anyone who has tried this, or is looking at this themselves?
>
> Cheers,
> Matt Raso-Barnett
> University of Cambridge
>
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