RE: RAID-5 creation crashes when files system installed while recovery going on

["NeilBrown" <neilb@suse.de>]

On Wed, June 24, 2009 4:39 pm, Tirumala Reddy Marri wrote:
> My meaning of crash was kernel panic happens.  BTW we have HW acceleration
> to do the XOR calculations which uses ADMA driver model.
> Thanks,
> MArri

Is it possible to get details of this panic?  A digital photo
of the screen perhaps?

NeilBrown

>
> ________________________________
>
> From: linux-raid-owner@vger.kernel.org on behalf of NeilBrown
> Sent: Tue 6/23/2009 7:31 PM
> To: Tirumala Reddy Marri
> Cc: linux-raid@vger.kernel.org
> Subject: Re: RAID-5 creation crashes when files system installed while
> recovery going on
>
>
>
> On Wed, June 24, 2009 8:35 am, Tirumala Reddy Marri wrote:
>> All,
>>  I started RAID-5 creation using mdadm command. While recovery is
>> happening I tried to install file system . I see intermittent crash   .
>> And crash doesn't happen at fixed location. Any clue what could be the
>> problem? How does the read/writes to MD driver handled while RAID-5 is
>> under building.
>
> Can you describe exactly what you mean by "crash" ??
>
> The raid5 driver normally has no problems handling writes while
> it is resyncing.  It has a 'stripe_cache' which is used to
> synchronise regular IO with resync IO.
>
> NeilBrown
>
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