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Re: Segfault of xfs_repair during repair of a xfs filesystem

To: Rainer Krienke <krienke@xxxxxxxxxxxxxx>
Subject: Re: Segfault of xfs_repair during repair of a xfs filesystem
From: Greg Freemyer <freemyer-ml@xxxxxxxxxxxxxxxxx>
Date: Wed, 07 Jan 2004 10:15:20 -0500
Cc: Eric Sandeen <sandeen@xxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <1073487512.19559.8.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
References: <Pine.LNX.4.44.0401060834240.16654-100000@xxxxxxxxxxxxxxxxxxxxxx> <200401071135.12886.krienke@xxxxxxxxxxxxxx> <1073487512.19559.8.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Reply-to: freemyer-ml@xxxxxxxxxxxxxxxxx
Sender: linux-xfs-bounce@xxxxxxxxxxx
On Wed, 2004-01-07 at 09:58, Greg Freemyer wrote:
> On Wed, 2004-01-07 at 05:35, Rainer Krienke wrote:
> 
> > In between I contacted the vendor of the hardware IDE raids. The technician 
> > confirmed that these raids have a read/write cache and that there is *no* 
> > battery backup. So in case of an active filesystem where suddenly there is 
> > a 
> > powerfail, it is likely that the hardware cache in the raid is not written 
> > to 
> > disk and the filesystem will be become inconsitent. And this very probably 
> > happened in my case. 
> > 
> XFS gurus:
> 
> If Rainer's raid system can not have the write cache enabled, is he
s/enabled/disabled/
> getting any benefit from the XFS Journaling?
> 
> I guess if it is an external array which does not have to have its power
> cycled if/when the server has its power cycled, then at least the
> journaling is used in the event of a kernel lockup.
> 
> Greg


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