Re: [Xen-users] xvda I/O errors in linux 3.1 under XCP 1.0

[George Shuklin <george.shuklin@xxxxxxxxx>]

On 30.09.2011 14:58, Steve Allison wrote:
> > [101017.440858] blkfront: barrier: empty write xvda op failed
> > [101017.440862] blkfront: xvda: barrier or flush: disabled
> > [101017.463438] end_request: I/O error, dev xvda, sector 3676376
> > [101017.463452] end_request: I/O error, dev xvda, sector 3676376
> > [101017.463459] Buffer I/O error on device xvda1, logical block 459291
> > [101017.463464] lost page write due to I/O error on xvda1
> >
> > It happens in every linux 3.1 rc since rc2 during boot (may be in
> > 3.1-rc1 - but it crash at start). Linux 3.0 boots fine. This is not
> > hardware or storage error: only Linux 3.1 cause this.
> >
> > Did some one saw this?  What the reason can be behind this? (I'm not
> > sure but this looks like announcing wrong size of block device, so ext3
> > failing to change it journal).
> I'm getting this error:
> Try using the barriers=0  mount option
>
> $ grep xvda2 /etc/fstab
> /dev/xvda2 / ext4 noatime,nodiratime,errors=remount-ro,barrier=0 0 1
Thank tou very much! It works!

Early lack of barrier disabling cause only warrning, now it cause I/O 
error. Anyway, this option "barrier=0" solve the problem.
Thank you!


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