From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Mason <chris.mason@oracle.com>
Subject: Re: kernel BUG at fs/btrfs/extent_io.c:1890!
Date: Thu, 12 Apr 2012 14:15:25 -0400
Message-ID: <20120412181525.GU29506@shiny>
References: <CACfQV3hb92zrYUJ8to1mq8s1wzfdEoMBDi9b5VmfZ0AZ=UBkFA@mail.gmail.com>
 <20120411150158.GA5820@localhost.localdomain>
 <CACfQV3j_WGTB-+booc1bDMvs1i_Kjr_WAAmLKgUb9sUWe-+wPg@mail.gmail.com>
 <20120412180836.GJ1924@localhost.localdomain>
Mime-Version: 1.0
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Cc: Francesco Cepparo <francesco.cepparo@gmail.com>,
	linux-btrfs@vger.kernel.org
To: Josef Bacik <josef@redhat.com>
Return-path: <linux-btrfs-owner@vger.kernel.org>
In-Reply-To: <20120412180836.GJ1924@localhost.localdomain>
List-ID: <linux-btrfs.vger.kernel.org>

On Thu, Apr 12, 2012 at 02:08:37PM -0400, Josef Bacik wrote:
> On Wed, Apr 11, 2012 at 11:59:43PM +0000, Francesco Cepparo wrote:
> > I tried your patch but unfortunately the kernel still gives me the
> > same error message :(
>  
> Weird, will you apply this patch on top of the one I sent you and send me the
> dmesg when it panics again?  Thanks,
> 
> Josef
> 
> diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
> index 2a3ddd2..51efb58 100644
> --- a/fs/btrfs/disk-io.c
> +++ b/fs/btrfs/disk-io.c
> @@ -652,6 +652,8 @@ static int btree_io_failed_hook(struct page *page, int failed_mirror)
>  
>  	eb = (struct extent_buffer *)page->private;
>  	set_bit(EXTENT_BUFFER_IOERR, &eb->bflags);
> +	WARN_ON(!failed_mirror);
> +	printk(KERN_ERR "io error, failed mirror %d\n");
                                                    ^^^^^

						    , failed_mirror

-chris