Bug on barriers for virtio_blk device - end_request: I/O error, dev vda, sector 0

Bug on barriers for virtio_blk device - end_request: I/O error, dev vda, sector 0

[Massimo Cetra]

Hello all,

i ended up with some thiusands of errors after upgrading to 2.6.31.2 
like this one:

end_request: I/O error, dev vda, sector 0
end_request: I/O error, dev vda, sector 0
end_request: I/O error, dev vda, sector 0
end_request: I/O error, dev vda, sector 0

I am using ocfs2 on top of drbd on top of LVM in a KVM guest that uses 
virtio_blk.

The bug is already known, see here:
https://bugzilla.redhat.com/show_bug.cgi?id=514901

A patch exists and the problem has already been submitted here in the list.
See here: http://lkml.org/lkml/2009/8/6/153

That fix is not in 2.6.31 nor in 2.6.32-RCX

Could you please consider pulling it and adding this fix for inclusion 
in 2.6.31.$next and also to mainline?

Thanks.

Re: Bug on barriers for virtio_blk device - end_request: I/O error, dev vda, sector 0

[Massimo Cetra]

Massimo Cetra ha scritto:
> Hello all,
>
> i ended up with some thiusands of errors after upgrading to 2.6.31.2 
> like this one:
>
> end_request: I/O error, dev vda, sector 0
> end_request: I/O error, dev vda, sector 0
> end_request: I/O error, dev vda, sector 0
> end_request: I/O error, dev vda, sector 0
>
> I am using ocfs2 on top of drbd on top of LVM in a KVM guest that uses 
> virtio_blk.
>
> The bug is already known, see here:
> https://bugzilla.redhat.com/show_bug.cgi?id=514901
>
> A patch exists and the problem has already been submitted here in the 
> list.
> See here: http://lkml.org/lkml/2009/8/6/153
>
> That fix is not in 2.6.31 nor in 2.6.32-RCX
>
> Could you please consider pulling it and adding this fix for inclusion 
> in 2.6.31.$next and also to mainline?
>
> Thanks.
No one listening here ?
This makes virtio_blk on LVM unusable.

Max

Re: Bug on barriers for virtio_blk device - end_request: I/O error, dev vda, sector 0

[Frans Pop]

Added CCs for the author of and people CCed on the patch.

The patch has been submitted twice (6 Aug, 3 Sept), the first time there 
was one concern voiced which seems to have been addressed in replies. The 
second time there were no reactions.

The patch seems to work for Massimo...

Massimo Cetra wrote:
> Massimo Cetra ha scritto:
>> Hello all,
>>
>> i ended up with some thiusands of errors after upgrading to 2.6.31.2
>> like this one:
>>
>> end_request: I/O error, dev vda, sector 0
>> end_request: I/O error, dev vda, sector 0
>> end_request: I/O error, dev vda, sector 0
>> end_request: I/O error, dev vda, sector 0
>>
>> I am using ocfs2 on top of drbd on top of LVM in a KVM guest that uses
>> virtio_blk.
>>
>> The bug is already known, see here:
>> https://bugzilla.redhat.com/show_bug.cgi?id=514901
>>
>> A patch exists and the problem has already been submitted here in the
>> list.
>> See here: http://lkml.org/lkml/2009/8/6/153
>>
>> That fix is not in 2.6.31 nor in 2.6.32-RCX
>>
>> Could you please consider pulling it and adding this fix for inclusion
>> in 2.6.31.$next and also to mainline?
>>
>> Thanks.
>
> No one listening here ?

It helps if you CC the people who maintain the relevant code.

> This makes virtio_blk on LVM unusable.

Cheers,
FJP

Re: Bug on barriers for virtio_blk device - end_request: I/O error, dev vda, sector 0

[Massimo Cetra]

Frans Pop ha scritto:
> Added CCs for the author of and people CCed on the patch.
> 
> The patch has been submitted twice (6 Aug, 3 Sept), the first time there 
> was one concern voiced which seems to have been addressed in replies. The 
> second time there were no reactions.
> 
> The patch seems to work for Massimo...

[CUT]

>> No one listening here ?
> 
> It helps if you CC the people who maintain the relevant code.

Thanks, Frans.

By the way, where can i find a list of the mantainers of the various areas ?
I found it some years ago, but it seems i can't find it anymore.
It's probably under my eyes... but i'm blind.

Thanks again
Massimo

Re: Bug on barriers for virtio_blk device - end_request: I/O error, dev vda, sector 0

[NeilBrown]

On Thu, October 15, 2009 9:55 pm, Massimo Cetra wrote:
> Frans Pop ha scritto:
>> Added CCs for the author of and people CCed on the patch.
>>
>> The patch has been submitted twice (6 Aug, 3 Sept), the first time there
>> was one concern voiced which seems to have been addressed in replies.
>> The
>> second time there were no reactions.
>>
>> The patch seems to work for Massimo...
>
> [CUT]
>
>>> No one listening here ?
>>
>> It helps if you CC the people who maintain the relevant code.
>
> Thanks, Frans.
>
> By the way, where can i find a list of the mantainers of the various areas
> ?
> I found it some years ago, but it seems i can't find it anymore.
> It's probably under my eyes... but i'm blind.

See http://lwn.net/Articles/356890/
     "Ask a kernel developer, part 2"
(you'll have to wait a week if you aren't a subscriber).

(or try ./scripts/get_maintainer.pl)

NeilBrown

>
> Thanks again
> Massimo
>