[Linux-cluster] fence_scsi support in multipath env in RHEL5.3

[Bryn M. Reeves]

On Wed, 2009-06-10 at 13:16 +0200, Maciej Bogucki wrote:
> Rajeev P pisze:
> > I wanted to know if fence_scsi is supported in a multipath environment 
> > for RHEL5.3 release. 
> >  
> > In earlier releases of RHEL5 fence_scsi was not supported in a 
> > multipath environment for RHEL5.3 release. If I am not wrong, this was 
> > because the DM-MPIO driver forwarded the registration/unregistration 
> > commands on only on one of the physical paths of a LUN.  Ideally it 
> > should have passed the commands on all physical paths.
> >  
> > For RHEL5.3, is this issue resolved so that I can fence_scsi in 
> > multipath environment. 
> >  
> Hello,
> 
> I don't think it's supported [1]
> 
> [1] - https://www.redhat.com/archives/rhelv5-list/2009-January/msg00092.html

Doesn't mention it at all.

Better to check the kernel ChangeLog:

* Tue Oct 10 2006 Don Zickus <dzickus at redhat.com> [2.6.18-1.2725.el5] 
- kernel dm multipath: ioctl support (Alasdair Kergon) [207575] 

This was included in the RHEL5 GA kernel (2.6.18-8.el5) so the ioctl
passthrough has been there all along in RHEL5.

Unfortunately the bug that introduced the change is private, but the
RHEL4 bug that it was cloned from is accessible:

https://bugzilla.redhat.com/show_bug.cgi?id=168801

Regards,
Bryn.