Re: synchronization of XFS

[Stefan Smietanowski <stesmi@xxxxxxxxxx>]

Steve Lord wrote:

> Christoph Hellwig wrote:
> 
>>
>>>> Now if grub is opening the block device and reading out of that, it
>>>> is looking at the same pages for metadata that xfs is looking at in
>>>> memory. There is a bug where you can get corruption if you access
>>>> the block device in parallel with the filesystem. Possibly this is
>>>> behind the problem.
>>>
>>>
>>> This will cause an oops on 2.6.x won't it --- so I suspect if this is
>>> behind the problem the report will be have been different.
>>
>>
>>
>> I don't think they're hitting the problem, the symptoms look very 
>> different.
>>
> 
> And thinking about it some more, having grub make the filesystem remount 
> readonly would force everything down to disk unlike just doing a sync
> call.

Tried and failed :(

Tried that before but it didn't help unfortunately.

// Stefan