Hello. I am trying to run dm_multipath (mpio) against an EMC Clariion array on a SuSE SLES) system. According to http://portal.suse.com/sdb/en/2005/04/sles_multipathing.html this should work, and it does to a certain degree, but I have problem with lvm integration on a system which has an lvm boot disk configuration. This is the environment: hges3302:~ # rpm -q multipath-tools multipath-tools-0.4.4-0.22 hges3302:~ # uname -a Linux hges3302 2.6.5-7.201-bigsmp #1 SMP Thu Aug 25 06:20:45 UTC 2005 i686 i686 i386 GNU/Linux hges3302:~ # cat /etc/SuSE-release SUSE LINUX Enterprise Server 9 (i586) PATCHLEVEL = 2 VERSION = 9 The server is a Fujitsu Siemens Primergy with an internal raid controller and two Emulex lp9802 HBAs; driver is lpfc 8.0.16. Everything works fine if I start SuSE's /etc/init.d/boot.multipath (which simply loads dm-multiptah) and /etc/init.d/multipathd manually, having booted the server without multipath. Once starting boot.multipath and multipathd manually, I can pvscan the Clariion, vgchange -ay the volumegroups etc.; and the path failover works fine. However, I would like to detect the volume groups at boot time; not manually. But if I put boot.multpath and multipathd (wich SuSE delivers) into the boot sequence (insserv boot.multipath / multipathd), I run into problems with lvm. My server has its root file system on an internal disk, and this disk is under lvm control too. I tried booting lvm after boot.multipath as well as loading first multipath, then lvm. I dont get any boot time error messages. Having booted the server in this way, multipath detects the disks properly, i.e it cretes /dev/disk/by-name/<UID> etc - but lvm is not willing to detect these disks; i.e. pvscan shows only the internal disks sda and sdb. Here is the relevant part of my lvm.conf in both cases: ###### accept mpioDevices and the boot disks, but nothing else filter=[ "a|/dev/disk/by-name/.*|","a|/dev/sda.*|","a|/dev/sdb|" ,"r|.*|" ] types = [ "device-mapper",253 ] If I create a rc-script by myself (containing nothing but "/etc/init.d boot.multipath start; /etc/init.d/multipathd start") and run it later at the end of rc5.d, then again everything is fine and pvscan detects the disks. Is there anybody who can give me some recommendation conderning the sequence to start dm_multipath and lvm at bot time? Should I try to "sleep 10" or something the like after booting multipath and before booting lvm? TIA, -- Diedrich Ehlerding, Fujitsu Siemens Computers, S DE SE PS N/O Hildesheimer Str 25, D-30880 Laatzen diedrich.ehlerding@fujitsu-siemens.com Fon +49 511 8489-1806, Fax -251806, Mobil +49 173 2464758 _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
