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

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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