RE: [dm-devel] [ANNOUNCE] multipath-tools-0.4.1

[James Smart Emulex Com]

Qlogic shouldn't be strung out. It wasn't them....

As part of a change that went into the FC transport - the device reported under this directory was moved from the LUN device to the Target device - thus the change in name format (it killed replication of target data that was being done for all luns). The attributes underneath remain the same. I believe this change occurred in the first rc1 patch to 2.6.9.

As to the grand plan - you should be fine if you :
 pre-2.6.10: it's the older name format "/sys/class/fc_transport/<host>:<channel>:<target>:<lun>"
 2.6.10 and later : it's the new format "/sys/class/fc_transport/target<host>:<channel>:<target>"

 and the folks running a patched 2.6.9 have to live by the new format.

-- James S.

> -----Original Message-----
> From: dm-devel-bounces redhat com 
> [mailto:dm-devel-bounces redhat com]On
> Behalf Of christophe varoqui
> Sent: Wednesday, December 22, 2004 4:53 PM
> To: device-mapper development
> Cc: linux-raid vger kernel org;
> linux-hotplug-devel lists sourceforge net; linux-scsi vger kernel org
> Subject: RE: [dm-devel] [ANNOUNCE] multipath-tools-0.4.1
> 
> 
> Le mercredi 22 d?embre 2004 à 11:26 -0800, Caushik, Ramesh a écrit :
> > On my system I have a Qlogic 2310 driver running on a 2.6.9 
> kernel. The fc_transport 
> > directory in sysfs looks like 
> > 
> > ls -ll /sys/class/fc_transport/
> > total 0
> > drwxr-xr-x   6 root root 0 Dec 16 13:59 .
> > drwxr-xr-x  20 root root 0 Dec 15 14:31 ..
> > drwxr-xr-x   2 root root 0 Dec 16 13:59 2:0:0:0
> > drwxr-xr-x   2 root root 0 Dec 16 13:59 2:0:1:0
> > drwxr-xr-x   2 root root 0 Dec 16 13:59 2:0:2:0
> > drwxr-xr-x   2 root root 0 Dec 16 13:59 2:0:3:0  
> > 
> > The patch addresses only this format. So please disregard 
> the patch, and sorry about the confusion.
> > 
> ...
> > [root cl039 multipath]# ll /sys/class/fc_transport/
> > total 0
> > drwxr-xr-x    2 root     root            0 Dec 14 16:26 target2:0:0
> > drwxr-xr-x    2 root     root            0 Dec 14 16:26 target2:0:1
> > drwxr-xr-x    2 root     root            0 Dec 14 16:26 target2:0:2
> > drwxr-xr-x    2 root     root            0 Dec 14 16:27 target2:0:3
> > drwxr-xr-x    2 root     root            0 Dec 14 16:27 target3:0:0
> > drwxr-xr-x    2 root     root            0 Dec 14 16:27 target3:0:1
> > drwxr-xr-x    2 root     root            0 Dec 14 16:27 target3:0:2
> > drwxr-xr-x    2 root     root            0 Dec 14 16:27 target3:0:3
> > 
> Can someone, maybe from Qlogic, comment on these differences ?
> Is there a grant unified plan for driver objects 
> representation through
> sysfs, and if so which is the right path name to fetch the node_name.
> 
> regards,
> -- 
> christophe varoqui <christophe varoqui free fr>
> 
> 
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