Ocfs2 users - Jul 2009 - CentOS-5.3 + DRBD-8.2 + OCFS2-1.4

I've run into a problem mounting an OCFS2 filesystem on a DRBD device.  I
think it's the same one discussed at
http://lists.linbit.com/pipermail/drbd-user/2007-April/006681.html

When I try to mount the filesystem I get a ocfs2_hb_ctl: I/O error:

[root at node-6A ~]# mount -t ocfs2 /dev/drbd2 /cshare
ocfs2_hb_ctl: I/O error on channel while starting heartbeat
mount.ocfs2: Error when attempting to run /sbin/ocfs2_hb_ctl: "Operation
not permitted"
[root at node-6A ~]#

Dmesg shows:

(5070,0):o2hb_setup_one_bio:409 ERROR: Error adding page to bio i = 7, vec_len =
4096, len = 0
, start = 0
(5070,0):o2hb_read_slots:507 ERROR: status = -5
(5070,0):o2hb_populate_slot_data:1432 ERROR: status = -5
(5070,0):o2hb_region_dev_write:1532 ERROR: status = -5

The solution recommended in 2007 was to patch the kernel.  I think I've
established that the OCFS2 heartbeat patch wasn't committed to the Linux
kernel until 2.6.20.  I think I've also established that Redhat haven't
backported the patch to their RHEL-5 kernel (currently 2.6.18-128.2.1.el5) as
there's no mention of it in the changelog.

Am I therefore correct to understand that either patching the CentOS-5 kernel or
using a 2.6.20 or upwards kernel will be required to use a CentOS-5.3 + DRBD-8.2
+ OCFS2-1.4 setup?

Has anyone had any success applying the OCFS2 heartbeat patch to the CentOS-5
2.6.18 kernel?

Many thanks,

Kevin Clark
Connection Software

This patch should be in ocfs2-1.4. It is not in ocfs2-1.2. Ignore the  
kernel version. Both 1.2 and 1.4 work on el5.

On Jul 15, 2009, at 3:41 AM, Kevin Clark <kevin.clark at csoft.co.uk>  
wrote:
> I've run into a problem mounting an OCFS2 filesystem on a DRBD  
> device.  I think it's the same one discussed at
http://lists.linbit.com/pipermail/drbd-user/2007-April/006681.html
>
> When I try to mount the filesystem I get a ocfs2_hb_ctl: I/O error:
>
> [root at node-6A ~]# mount -t ocfs2 /dev/drbd2 /cshare
> ocfs2_hb_ctl: I/O error on channel while starting heartbeat
> mount.ocfs2: Error when attempting to run /sbin/ocfs2_hb_ctl:  
> "Operation not permitted"
> [root at node-6A ~]#
>
> Dmesg shows:
>
> (5070,0):o2hb_setup_one_bio:409 ERROR: Error adding page to bio i =  
> 7, vec_len = 4096, len = 0
> , start = 0
> (5070,0):o2hb_read_slots:507 ERROR: status = -5
> (5070,0):o2hb_populate_slot_data:1432 ERROR: status = -5
> (5070,0):o2hb_region_dev_write:1532 ERROR: status = -5
>
> The solution recommended in 2007 was to patch the kernel.  I think  
> I've established that the OCFS2 heartbeat patch wasn't committed to
> the Linux kernel until 2.6.20.  I think I've also established that  
> Redhat haven't backported the patch to their RHEL-5 kernel  
> (currently 2.6.18-128.2.1.el5) as there's no mention of it in the  
> changelog.
>
> Am I therefore correct to understand that either patching the  
> CentOS-5 kernel or using a 2.6.20 or upwards kernel will be required  
> to use a CentOS-5.3 + DRBD-8.2 + OCFS2-1.4 setup?
>
> Has anyone had any success applying the OCFS2 heartbeat patch to the  
> CentOS-5 2.6.18 kernel?
>
> Many thanks,
>
> Kevin Clark
> Connection Software
>
>
>
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