Hey Jack- That was all new to me, so thanks for figuring it out and following up with the solution :) Take care- Chet On Wed, Jun 25, 2008 at 5:51 PM, Allen, Jack <Jack.Allen@xxxxxxxxxxxx> wrote: > Hello: > I did not get any response from this, so I will follow up what I > found in case someone does a search on the later. > > After doing some searching on redhat.com I found something that > helped. The user_friendly_name only controls what gets put in > /dev/mapper. The RedHat information stated that /dev/mpath/mpath* should > not be used for LVM because it may not be there during the early part of > booting. The /dev/mapper/mpath* name will be. > > Thanks: > Jack Allen > > -----Original Message----- > From: Allen, Jack > Sent: Friday, June 20, 2008 10:50 AM > To: redhat-list@xxxxxxxxxx > Subject: Multipath and friendly names > > Hello: > Earlier this week I posted the problem I was having with > PowerPath and RHEL 5.2. So I decided to use device-mapper-multipath. For > the most part things work fine, but I have run into a little problem. > > The SAN is an EMC Clariion. When I set things up, commented out > the blacklist in multipath.conf and added user_friendly_name yes in the > default section, enabled multipathd and started it, it saw the SAN LUNS > and created /dev/mpath/mpath0 - /dev/mpath/mpath3. > > I did pvcreate and vgcreate using the /dev/mpath/mpath? names. > Created Logical Volumes, all with no problems. Then later I rebooted the > system just to make sure everything would show up as it should, > basically it did, except for one thing. The names in /dev/mpath are now > the WWID. The LVM finds the Volume Group and activates it, but when you > do certain commands the WWID are shown instead of /dev/mpath/mpath0 - > /dev/mpath/mpath3. > > Because there is support built-in for EMC, I did not have to > create a devices section for EMC in multipath.conf. > > So my question is, because of this, is the default section > ignored? > > If does this mean I have to define a devices section for EMC > with the use_friendly_name option in it? > > Note: I have not added anything in modprobe.conf, but there are > several dm_* modules that get loaded. > > Thanks: > Jack Allen > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > -- ---------------------------------------- chet nichols III chet.nichols@xxxxxxxxx aim: chet / twitter: chet http://chetnichols.org ---------------------------------------- -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
