[Lustre-discuss] Enabling async journals while the filesystem is active

Erik Froese erik.froese at gmail.com
Sat Aug 21 07:06:40 PDT 2010


I think we're going to benefit from it.

Last question: My clients and routers are still running Lustre
1.8.1.1. The MDS/OSSes are on 1.8.3.
Would you recommend a client upgrade before enabling async journals?

Erik

On Fri, Aug 20, 2010 at 9:35 PM, David Dillow <dillowda at ornl.gov> wrote:
> On Fri, 2010-08-20 at 17:36 -0700, Peter Jones wrote:
>> Quite. And async journal commits were officially added in 1.8.2.
>>
>> Erik Froese wrote:
>> > I remember something about a bug during recovery after a crash in 1.8.1.1.
>> > Erik
>> >
>> > On Fri, Aug 20, 2010 at 8:15 PM, Peter Jones <peter.x.jones at oracle.com> wrote:
>> >
>> >> Really? I had heard of a serious bug before async journal commits were
>> >> included in a release, but I had understood that things were working well at
>> >> the few sites running it.
>
> We've been quite happy with it. I recall a bug being reported against
> them, but IIRC that was actually a longstanding bug that predated async
> journals. My recollection is foggy, though so perhaps Oleg can set the
> record straight.
> --
> Dave Dillow
> National Center for Computational Science
> Oak Ridge National Laboratory
> (865) 241-6602 office
>
>



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