FW: FW: [DRBD-user] Local IO failed. Detaching...

Max Serafini mserafini at positiveesolutions.ca
Wed Feb 4 11:13:58 CET 2009

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Hello


Really sorry, I didn't want to abuse the list.  I actually subscribed to
it using this link, and I've also been receiving everyone else's post.
Did I miss something?

http://lists.linbit.com/listinfo/drbd-user


Your suggestion worked, with the 2 options, the disk is now attached and
usable.

Thank you very much


max



-----Original Message-----
From: drbd-user-bounces at lists.linbit.com
[mailto:drbd-user-bounces at lists.linbit.com] On Behalf Of Lars Ellenberg
Sent: Tuesday, February 03, 2009 3:59 AM
To: drbd-user at lists.linbit.com
Subject: Re: FW: [DRBD-user] Local IO failed. Detaching...

you know, you shoud subscribe here...
non-subscribers are usually not allowed to post.

On Tue, Feb 03, 2009 at 09:50:43AM +0100, Max Serafini wrote:
> I tried those tests and there are no errors.  I'm not saying drbd is the
> problem, in fact I think it's not.  Why would everything work on a
> different os with the same disks and rest of hardware?  
> 
> Anyway, thanks for your help

you should compare kernel logs during DRBD configuration
of the working and non-working setup.


you could also try to add "no-md-flushes"
(and probably also no-disk-flushes) to your drbd configuration.

it is possible that those "disks" do not support barriers,
but do not return "-EOPNOTSUPP", as they are supposed to, but rather
error out generically ("-EIO"), or in any other way,
making it look like an IO error.

in more recent DRBD versions we do no longer care
for the exact error value of failed barrier requests,
but retry without the barrier flag set, anyways.
because of such misbehaviour.


-- 
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

DRBDR and LINBITR are registered trademarks of LINBIT, Austria.
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