similar to: Mounting mpath devices in RHEL 5

I am fairly new to ISCSI and SAN technology but having recently invested in the technology I am trying to find out exactly what can and can not be manipulated, filesystem wise, without requiring a reboot. I am using the inbuilt software ISCSI initiator and multipathing in CentOS 5.1. My steps so far. Create 10GB volume on SAN # iscsiadm -m session -R # fdisk /dev/mapper/mpath0 # kpartx -a

How can I get the mapper device permissions set on reboot? When I attempted to try this... # cat /etc/udev/permissions.d/50-udev.permissions | grep mapper mapper/mpath*:oracle:dba:0660 But it did not seem to work... # ls -l /dev/mapper/mpath* brw-rw---- 1 root disk 253, 2 Feb 26 20:56 /dev/mapper/mpath0 brw-rw---- 1 root disk 253, 5 Feb 26 20:56 /dev/mapper/mpath0p1 brw-rw---- 1 root disk

Hello All: Had an issue after upgrading to the latest CentOS kernel from kernel-2.6.18-164.11.1.el5 to kernel-2.6.18-164.15.1.el5 on an IBM HS21 blade with SAN boot. Upgrade went fine, but after rebooting the system was unable to find /boot even though it was mounted. The reboot displayed an error with fsck.ext3 that /dev/mapper/mpath0p1 was not found, which was the /boot volume. I reverted

Hi list! I have a server with dual port Qlogic iSCSI HBA. I set up the same LUN for both ports, and boot the CentOS installer with "linux mpath". Installer detects multipathing fine, and creates mpath0 device for root disk. Installation goes fine, and the system boots up and works fine after the install from the multipath root device. After install the setup is like this: LUN 0 on

Anyone using it? I''ve tried but after about 5 min I always get kernel panic. My setup is based on nano.txt. I works well but only if CONFIG_IP_ROUTE_MULTIPATH_CACHED=n. I just wanted to play with the new mpath feature of ip. But enabling CONFIG_IP_ROUTE_MULTIPATH_CACHED always resuts in kernel panic. I''m not using any kernel patches from http://www.ssi.bg/~ja/ - are they needed

Hi list, I have tried google but just cant get this to work or figure it out. My setup ======== vanilla 2.6.13 kernel with CONFIG_IP_ROUTE_MULTIPATH=y CONFIG_IP_ROUTE_MULTIPATH_CACHED=y CONFIG_IP_ROUTE_MULTIPATH_RR=y CONFIG_IP_ROUTE_MULTIPATH_RANDOM=y CONFIG_IP_ROUTE_MULTIPATH_WRANDOM=y CONFIG_IP_ROUTE_MULTIPATH_DRR=y My configuration: A host with two ppp links. Ontop of these two ppp dialup

Hi, I'm using libvirt 0.8.3 on Fedora 14 (as I wrote earlier, I'm having some trouble updating to the newest version), and I'm having problems getting iscsi and mpath storage pools to work in a usable and consistent manner. I have two storage pools defined on the host machine, one for raw iscsi- devices and one for those same iscsi devices device-mapped by multipath. They look

Hello, I am trying to find out a best practice for a specific scenario. First of all I would like to know what is the proper way to set up multipath, who should care about it the host or the guest. Right now I have a setup where I have one multipath which sets my host to boot from FC SAN. I have another multipathed LUN in the host which is essentially a dm which I attached to a guest, however

Hi, Hope this is the right place to ask this. I have set up 2 ubuntu lts machines with an IBM iscsi san. I have set up multipathd and ocfs2 and it seems to be working. The problem is that when I run up ocfs2console it hangs (the console app, not the system). Using strace, I can see that it is running through all the /dev/sdx devices and loops trying to access the first one in

Hello, I've got a 2 node HP DL580 cluster supported by a Fibrechannel SAN with dual FC cards, dual switches and an HP EVA on the back end.? All SAN disks are multipathed.? Installed software is: Redhat 5.3 ocfs2-2.6.18-128.1.14.el5-1.4.2-1.el5 ocfs2-tools-1.4.2-1.el5 ocfs2console-1.4.2-1.el5 Oracle RAC 11g ASM Oracle RAC 11g Clusterware Oracle RAC 10g databases OCFS2 isn't being used by

All other patches from the sequence remain unchanged. Repost of patch 6 based on comments from Joey to follow. Mike

Hi, I'm new to this list and to the ocfs2 system and to clustering in general (3 strikes?--ack!). I have some problems with my first attempt at configuring an ocfs2 system and need some perspective. My setup is a Compaq Proliant CL380 2 node cluster with a shared storage array. Both nodes are currently running SLES 10. However, I am just trying to get one node working. I have read the

On Tue, 15 Jun 2004 21:41:00 +0800, ?????? <0034058@fudan.edu.cn> wrote : >Duncan Murdoch?? > > thanks for your information:) > > i have another small question,i hope you can give me an perfect answer. > >i know the difference between alpha and beta version,but how about pathed verion? > >does pathed version means final version,formal version? Here's a

I've installed jdk-1_5_0_08-linux-i586.rpm and Tomcat. Working through some initial test install programs, I am finding that I can't seem to compile .java files into classes. For instance... javac -classpath /usr/local/tomcat/common/lib/servlet.jar HelloWorld.java as instructed fails with a gij: unrecognized option -- `-classpath' Try `gij --help' for more information. So

We have some HDS storage that isn''t supported by mpxio, so we have to use veritas dmp to get multipathing. Whats the recommended way to use DMP storage with ZFS. I want to use DMP but get at the multipathed virtual luns at as low a level as possible to avoid using vxvm as much as possible. I figure theres no point in having overhead from 2 volume manages if we can avoid it. Has anyone

The following patches introduce support for multipath and cciss devices to the ovirt-node and node-image. Comments are appreciated. These patches assume that the 3 patches (2 node, 1 node-image) from Joey are all incorporated. Mike

I currenlty have the setup below, both nodes can see the shared drive ( confirmed with fdisk -l ) However I am unable to mount the shared device from node (2) after I mounted from node(1) I get the follwoign error mount.ocfs2: Transport endpoint is not connected while mounting /dev/sdb1 on /u02/oradata/orcl OS Red Hat uname -r --------------------------------- 2.6.9-22.ELsmp OCFS version

I have a kernel BUG() most of the time when updating my LVM configuration. I created a bug report on kernel linux-2.6 package as it looked related to kernel; but searching through bug reports, it look like it's Xen related. - No similar bug report about LVM crash for non-xen user - Other Xen users have similar errors: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=615048 "base: After

I was playing a bit with multipathed devices (over two FC HBAs on SAN) last week (I had some hardware for limited time to play with). The support for multipathing in device mapper seems to be a bit newer thing, and I was left with couple of questions (things I haven't managed to try out while I had the hardware)... Is it possible to have root file system on multipathed device? I guess in

Running CentOS 6.7, on an older HP DL580 G5. We've got a Dell 12-bay RAID box plugged into a PERC H800 (aka LSI Liberator) that we put in the HP, and that works fine. We've got a new RAID (a JetStor), and are trying to plug it in. The layout is that the Dell RAID is dual-pathed DAS. Each PERC has two DAS ports. We've got the Dell RAID in the top port of each PERC. I *thought* I could