You should be able to set them up in /etc/multipath.conf I had issues mounting the filesystems across reboots on an xSeries. Red Hat recommended using the /dev/mapper/ as opposed to /dev/mpath##
[ . . . snip from /etc/fstab . . . ] /dev/mapper/LnP /LnP_FTP ext3 acl 1 2 /dev/mapper/100GBno1 /ftpdata2 ext3 acl 1 2 # this is the 16GB LUN Slice below /dev/mapper/16GBno1 /DigMedNetPgm ext3 acl 1 2 Seems that there was NO consistency as to how multipath would select path numbers. I would always get dropped into maintenance mode This recommendation fixed my issues since changing fstab to /dev/mapper/#### Emmett O'Grady Mercedes-Benz USA, LLC. [email protected] Sent by: [email protected] 10/05/2010 01:45 PM Please respond to [email protected] To [email protected] cc Subject Re: Question about multipathing on zDebian (Lenny) Mark, I am not familiar with Debian, but if this was a SUSE or REDHAT instance, I would say you need to run mkinitrd and zipl before your reboot. John From: "Wiggins, Mark" <[email protected]> To: [email protected] Date: 10/05/2010 01:37 PM Subject: Question about multipathing on zDebian (Lenny) Sent by: Linux on 390 Port <[email protected]> I hate to come and ask what I know is going to be a simple answer, but I've beat my head against the wall for long enough. I'm trying to add some multipath'd devices to a Debian(Lenny) instance. I can get the devices configured properly, mpath1 (360050768019281af7000000000000153) dm-1 IBM ,2145 [size=3.7G][features=0][hwhandler=0] \_ round-robin 0 [prio=0][active] \_ 0:0:0:32 sde 8:64 [active][undef] \_ 0:0:1:32 sdf 8:80 [active][undef] \_ 1:0:0:32 sdg 8:96 [active][undef] \_ 1:0:1:32 sdh 8:112 [active][undef] mpath0 (360050768019281af7000000000000152) dm-0 IBM ,2145 [size=3.7G][features=0][hwhandler=0] \_ round-robin 0 [prio=0][active] \_ 0:0:0:31 sda 8:0 [active][undef] \_ 0:0:1:31 sdb 8:16 [active][undef] \_ 1:0:0:31 sdc 8:32 [active][undef] \_ 1:0:1:31 sdd 8:48 [active][undef] I just can't get these definitions to hold across a reboot. I've tried creating /etc/sysconfig/hardware/config-ccw-0.0.a200 files,/usr/share/initramfs-tools/hooks/multipath_hook file, zipl commands, update-initramfs commands, etc., but I haven't found what it takes to make these definitions hold across a reboot. What am I missing besides writing some kind of a script that has to run after every reboot? Mark Wiggins University of Connecticut My /etc/sysconfig/hardware/config-ccw-0.0.a200 looks like this, #!/bin/sh # # hwcfg-zfcp-bus-ccw-0.0.a200 # # Configuration for the zfcp adapter at CCW ID 0.0.a200 # STARTMODE="auto" MODULE="zfcp" MODULE_OPTIONS="" # Scripts to be called for the various events. # If called manually the event is set to 'up'. SCRIPTUP="hwup-ccw" SCRIPTUP_ccw="hwup-ccw" SCRIPTUP_scsi_host="hwup-zfcp" SCRIPTDOWN="hwdown-scsi" SCRIPTDOWN_scsi="hwdown-zfcp" # Configured zfcp disks ZFCP_LUNS="0x50050768014035ee:0x001f000000000000" ZFCP_LUNS="0x50050768014035d9:0x001f000000000000" ZFCP_LUNS="0x50050768014035ee:0x0020000000000000" ZFCP_LUNS="0x50050768014035d9:0x0020000000000000" ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ If you are not the intended addressee, please inform us immediately that you have received this e-mail in error, and delete it. We thank you for your cooperation.
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