Problem Mounting EMC Lun via fstab

Chuck chuck.carson at
Thu Oct 18 14:14:57 UTC 2007

Im running

EMCpower.LINUX-5.0.1-022 on 2.6.18-8.1.14.el5 (x86_64). The array is running
flare 2.19.03. I'm using QLA2340's and driver qla2xxx-v8.01.07.15-2. So far
Dell enterprise support has not figured out the problem. (unfortunately this
array was purchased thru dell; I was not at this company when that decision
was made)

Here is my modprobe.conf:

tango:~ #cat /etc/modprobe.conf
alias eth0 e1000
alias eth1 e1000
alias eth2 e1000
alias eth3 e1000
alias scsi_hostadapter mptbase
alias scsi_hostadapter1 mptspi
install qla2xxx /sbin/modprobe qla2xxx_conf; /sbin/modprobe --ignore-install
remove qla2xxx /sbin/modprobe -r --first-time --ignore-remove qla2xxx && {
/sbin/modprobe -r --ignore-remove qla2xxx_conf; }
options qla2xxx ql2xfailover=0 ConfigRequired=0
alias scsi_hostadapter2 qla2xxx_conf
alias scsi_hostadapter3 qla2xxx
alias scsi_hostadapter4 qla2300
include /etc/modprobe.conf.pp

And here is modprobe.conf.pp:
tango:~ #cat /etc/modprobe.conf.pp
alias ppemcp emcp
alias ppemcpdm emcpdm
alias ppemcpgpx emcpgpx
alias ppemcpmpx emcpmpx
alias ppemcplib emcplib
install emcp /sbin/modprobe pp_hba; /sbin/modprobe emcp --ignore-install
install pp_hba  /sbin/modprobe qla2300;
options emcp managedclass=symm,clariion,hitachi,invista,hpxp,ess,hphsx


On 10/18/07, Dominique.GARNIER at <Dominique.GARNIER at> wrote:
> What version are you using?
> We had exactly the same issue with Redhat 4 and PowerPath 4.5. We
> managed to make it work
> correctly playing with modeprobe.conf.
> It seems that they fixed the installation with PowerPath 5.0 because we
> don't have to change
> anything to the configuration anymore after a new PowerPath installation
> since we're using it.
> -----Original Message-----
> From: redhat-list-bounces at
> [mailto:redhat-list-bounces at] On Behalf Of Shelton, Darren
> Sent: mercredi 17 octobre 2007 20:02
> To: 'General Red Hat Linux discussion list'
> Subject: RE: Problem Mounting EMC Lun via fstab
> Powerpath is loaded via kernel mods. Have a look in
> /etc/modprobe.conf.pp
> and /etc/modprobe.conf. All of my volumes are in the LVM, and i dont
> have
> any issues with those being mounted at boot, but ive not ever tried to
> mount
> filesystems on the devices outside of the LVM.
> darren
> -----Original Message-----
> From: redhat-list-bounces at
> [mailto:redhat-list-bounces at]
> On Behalf Of Chuck
> Sent: Wednesday, October 17, 2007 11:40 AM
> To: redhat-list at
> Subject: Problem Mounting EMC Lun via fstab
> I have a RHEL 5 system that is trying to mount an EMC lun during boot.
> When
> I have it set in /etc/fstab is complains that the device doesn't exist.
> If I
> enter the root password it puts me into a read-only filesystem where I
> can't
> modify /etc/fstab. (I must boot into rescue mode using cd to fix it)
> /etc/fstab:
> /dev/emcpowera         /u01                    ext3    defaults        0
> 2
> However, if I don't mount it via fstab and wait until the system is
> booted
> to mount it -- it mounts fine.
> I'm guessing that powerpath is not being started early enough or its
> taking
> longer than it should to initialize. Im mostly a sun guy so where
> exactly
> should power path be started or is it somehow called from somewhere
> else? Im
> not even seeing an entry in /etc/rc2.d or /etc/rc3.d that starts power
> path.
> There is a script in /etc/init.d, but I cannot determine from where and
> when
> it is called, if it even is. (the script doesn't have the normal
> chkconfig
> run level config info near the top like most do) But somehow once the
> system
> is booted power path is running and the emcpowera device has been
> initialized.
> Unfortunately I can't use native linux multipathing on this node.
> Thx for any help
> /CC
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