Help with filing a [maybe] ZFS/mmap bug.

[Steven Hartland]

----- Original Message ----- 
From: "Andriy Gapon" <avg at FreeBSD.org>
>>>> ----- Original Message ----- From: "Andriy Gapon" <avg at FreeBSD.org>
>>>>> - vm_page_clear_dirty(pp, off, nbytes);
>>>>> + if (nbytes != 0)
>>>>> + vm_page_clear_dirty(pp, off, nbytes);
>>>>>  }
>>>>>  break;
>>>>
>>>> Thanks Andriy, looking to test this here but 8.3 doesn't have a page_busy
>>>> method in zfs_vnops.c so I'm not sure how to proceed on this?
>>>
>>> Does it have vm_page_clear_dirty call?
>> 
>> Nope.
>> 
> 
> Then you do not have this bug.  It's possible that you might have a different
> bug, though.  Perhaps merge the relevant change from stable/8 and then apply the
> patch?..

Backported the r248946 & 248960 then applied this fix and we've not seen
any rrd corruption since :)

Thanks for working on this!

    Regards
    Steve

================================================
This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. 

In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337
or return the E.mail to postmaster at multiplay.co.uk.