Thanks for all the feedback, there's quite a bit of information here to sort through. In the meanwhile, it would be an interesting data point to see how well this array functions under multipath 0.4.9, which is what Precise, the new LTS uses.
This can be accomplished by using apt pinning. http://askubuntu.com/questions/103320/install-packages-from-newer- release-without-building-apt-pinning/103338#103338 In your case: $ sudo tee /etc/apt/sources.list.d/precise.list << EOF deb http://us.archive.ubuntu.com/ubuntu/ precise main restricted deb-src http://us.archive.ubuntu.com/ubuntu/ precise main restricted deb http://us.archive.ubuntu.com/ubuntu/ precise-updates main restricted deb-src http://us.archive.ubuntu.com/ubuntu/ precise-updates main restricted EOF $ sudo tee /etc/apt/preferences << EOF Package: multipath-tools* Pin: release n=precise Pin-Priority: 990 Package: * Pin: release n=lucid Pin-Priority: 900 Package: * Pin: release o=Ubuntu Pin-Priority: -10 EOF $ sudo apt-get update $ sudo apt-get upgrade Should update multipath-tools and boot to 0.4.9, if not then $ sudo apt-get install -t precise multipath-tools multipath-tools-boot This should unjam you while we triage the data and will provide a valuable data point to aid in backporting if necessary. Note that the config syntax has changed slightly. https://help.ubuntu.com/12.04/serverguide/device-mapper- multipathing.html#multipath-new-and-changed-features It's ok to leave both directives in the file multpath simply globs keywords and uses the ones that "fit". Remember to update your initrd after changing the config file. I assume you have multiple SAN clients, please keep one at 0.4.8 so we can continue to debug this. Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1020436 Title: Cannot read superblock after FC multipath failover To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/1020436/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
