Mit freundlichem Gruss, Dirk Laurenz Systems Engineer Fujitsu Siemens Computers S CE DE SE PS N/O Sales Central Europe Deutschland Professional Service Nord/Ost Hildesheimer Strasse 25 30880 Laatzen Germany Telephone: +49 (511) 84 89 - 18 08 Telefax: +49 (511) 84 89 - 25 18 08 Mobile: +49 (170) 22 10 781 Email: mailto:dirk.laurenz@fujitsu-siemens.com Internet: http://www.fujitsu-siemens.com http://www.fujitsu-siemens.de/services/index.html ******************************************************************************************************************* -| -----Original Message----- -| From: Diedrich Ehlerding -| [mailto:diedrich.ehlerding@fujitsu-siemens.com] -| Sent: Wednesday, November 09, 2005 9:05 AM -| To: linux-lvm@redhat.com -| Subject: boot sequence of lvm and dm_multipath -| -| 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 -| -- -| 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/
