Re: multipath-tools only binding 2 out of 4 paths, bug w/ numerous devices?

Re: multipath-tools only binding 2 out of 4 paths, bug w/ numerous devices?

[Christophe Varoqui]

On ven., 2010-06-18 at 13:37 -0500, Costaras Steve - stcost wrote:
> I have a STK Flexline 680 which is presenting 12 2TB LUNS across 4 paths
> (48 devices).   They are showing up below correctly as sdb through sdaw.
> They are being encapsulated into dm-0 through dm-11.  (dm-12 is a lv).
> As below multipath is working but only using/seeing two of the paths.
> With exception of sdz (FLEX680-000 (3600104f0008baaa17c99eebb00000001)).
> It appears that the 3 & 4 paths that DO NOT show up are with device
> major numbers 66 & 67.   
> 
> Is this a known bug?
> 
Hi,

do you reproduce with upstream multipath-tools ? What distribution and
versions are you using ?

Best regards,
-- 
Christophe Varoqui <christophe.varoqui@opensvc.com>
OpenSVC

Re: multipath-tools only binding 2 out of 4 paths, bug w/ numerous devices?

[Christophe Varoqui]

On ven., 2010-06-18 at 14:17 -0500, Costaras Steve - stcost wrote:
> Sorry, I thought I pasted that into the e-mail. 
> 
> This is ubuntu 10.04LTS server running:
> 
> root@behemoth:/usr/src# uname -a
> Linux behemoth 2.6.32-22-server #36-Ubuntu SMP Thu Jun 3 20:38:33 UTC 2010 x86_64 GNU/Linux   on a Dell 6850 with tw qlogic 2344 cards.
> 
> 
> root@behemoth:/usr/src# dpkg -l | grep -i multipath
> ii  multipath-tools                 0.4.8-14ubuntu4                   maintain multipath block device access
> root@behemoth:/usr/src# dpkg -l | grep -i udev
> ii  libudev0                        151-12                            udev library
> ii  udev                            151-12                            rule-based device node and kernel event mana
> root@behemoth:/usr/src# dpkg -l | grep -i devmapp
> ii  libdevmapper-event1.02.1        2:1.02.39-1ubuntu4                The Linux Kernel Device Mapper userspace lib
> ii  libdevmapper1.02.1              2:1.02.39-1ubuntu4                The Linux Kernel Device Mapper userspace lib
> 
> 
> I have just grabbed 4.9 (2010-05-22) and am compiling it now but didn't see anything in the notes as a direct correlation.
> 
ok, please post your results with this version.

with the current version, you could also down the daemon and post the
output of 'multipath -F ; multipath -v4'.

Regards,
-- 
Christophe Varoqui <christophe.varoqui@opensvc.com>
OpenSVC