On 4/4/17 12:24 PM, Emmanuel Florac wrote:
> Le Tue, 4 Apr 2017 15:02:02 +0200
> Emmanuel Florac <eflorac@intellique.com> écrivait:
> 
>> Hi, 
>> here is an interesting crash dump. I've never seen this function
>> called before : "Fixing recursive fault but reboot is needed!"
>>
>> The system is frozen and must be hard rebooted. The filesystem is
>> humongous: about 400 TB.
>> Running is plain vanilla 3.18.44 (should upgrade...). I wonder if the
>> bug is still present though? 
>>
>> Context: this is a file server. There was a power failure yesterday,
>> so there's probably some corruption hidden somewhere triggering the
>> crash.

and using filestreams, apparently?

> 
> The machine goes on crashing on disk access... xfs_repair 4.9 is
> running now, and after that we'll reboot with a current kernel
> (4.4.59). Any advice?

Yep, go back in time & get an xfs_metadump before you repair it.  :(

Please do at least capture repair output.

-Eric

> The latest crash trace was still xfs related apparently: