Thanks Keith. I will try and let all know how it goes. Paras. On Tue, Sep 13, 2011 at 5:50 PM, Keith Schincke <keith.schincke@xxxxxxxxx> wrote: > Hmmm. The UUID of the physical volume should be written to disk (sdj) or > partition (sdj1) depending on your design. > kpartx should not care about the data on the disk (ie your UUID) when it > makes the mpathXpY entries. > > Hopefully what will happen will be > - install your hba and zone the SAN as necessary > - enable multipathd and restart. This should create the mpathX entries. > multipath -ll will list the paths and disks > - run kpartx -a to add needed mpathXpY entries. I do not know if this runs > on startup. > - reboot and see if you can mount the LVM. > > If all goes right, pvdisplay should display the multipath devices of your > PVs. > > > On Tue, Sep 13, 2011 at 5:11 PM, Paras pradhan <pradhanparas@xxxxxxxxx> > wrote: >> >> On Tue, Sep 13, 2011 at 4:30 PM, Keith Schincke >> <keith.schincke@xxxxxxxxx> wrote: >> > How many paths doe you currently have to your disk? >> > Does your LVM use the multipath name (mpath0)? >> >> Right now only one path with no multipath configured so LVM is not >> using mpath0. Ideas? >> >> Thanks! >> Paras. >> >> >> > >> > Sent from my iPhone >> > >> > On Sep 13, 2011, at 14:46, Paras pradhan <pradhanparas@xxxxxxxxx> wrote: >> > >> >> Thanks Bob. >> >> >> >> Another question. What about replacing single port HBA with a dual >> >> port. After configuring the multipathd, can I reconfigure physical >> >> volume without destroying the vg, lv and clvm ? I am kinddda lost >> >> here. >> >> >> >> Thanks >> >> Paras. >> >> >> >> On Tue, Sep 13, 2011 at 1:04 PM, Bob Peterson <rpeterso@xxxxxxxxxx> >> >> wrote: >> >>> ----- Original Message ----- >> >>> | Hi, >> >>> | >> >>> | I am replacing a 2 Gig Qlogic HBA with a 4 Gig Qlogic HBA in my GFS2 >> >>> | cluster. Apart from changing wwn in the SAN, what else do I need to >> >>> | change in Linux (centos). will the change be reflected >> >>> automatically? >> >>> | >> >>> | >> >>> | Thanks! >> >>> | Paras. >> >>> >> >>> Hi Paras, >> >>> >> >>> The GFS2 file system doesn't care what HBA you're using. >> >>> So as long as your kernel has a good device driver for that HBA >> >>> you shouldn't need to do anything else. >> >>> >> >>> Regards, >> >>> >> >>> Bob Peterson >> >>> Red Hat File Systems >> >>> >> >>> -- >> >>> Linux-cluster mailing list >> >>> Linux-cluster@xxxxxxxxxx >> >>> https://www.redhat.com/mailman/listinfo/linux-cluster >> >>> >> >> >> >> -- >> >> Linux-cluster mailing list >> >> Linux-cluster@xxxxxxxxxx >> >> https://www.redhat.com/mailman/listinfo/linux-cluster >> > >> > -- >> > Linux-cluster mailing list >> > Linux-cluster@xxxxxxxxxx >> > https://www.redhat.com/mailman/listinfo/linux-cluster >> > >> >> -- >> Linux-cluster mailing list >> Linux-cluster@xxxxxxxxxx >> https://www.redhat.com/mailman/listinfo/linux-cluster > > > -- > Linux-cluster mailing list > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster > -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
