** Description changed: [Impact] - Just loading the necessary modules is not enough to get a working IPMI system interface (/dev/ipmi0) on Cavium ThunderX CRBs, and other ThunderX-based Gigabyte servers. You have to do some magic: - - echo ipmi_ssif 0x12 >/sys/bus/i2c/devices/i2c-4/new_device - or maybe: - echo ipmi_ssif 0x12 >/sys/bus/i2c/devices/i2c-5/new_device - - Loading the modules should be enough. + The IPMI system interface (/dev/ipmi0) is unavailable on Cavium ThunderX-based systems. This prevents various in-band management tasks, including auto-enlistment using MAAS. [Test Case] sudo modprobe ipmi_ssif sudo modprobe ipmi_devintf Do you have a working /dev/ipmi0? sudo ipmitool lan print [Regression Risk] - The driver being fixed is only used on ThunderX-based systems, and is currently not usable w/o the above manual config. + For hwe-z, this is a small fix to a driver that is only used on ThunderX-based systems, and is currently not usable w/o magic manual steps. + + For hwe-x and hwe-y, this also impacts the i2c-octeon driver. After + hwe-y, upstream split that driver into 2 pieces to factor out code that + could be shared with i2c-thunderx, and then i2c-thunderx was added. i2c- + octeon is a driver for Cavium OCTEON systems, which are MIPS64 - an + architecture unsupported by Ubuntu, so regression risk is negligible. + i2c-thunderx is a new driver that is only loaded on ThunderX-based + systems, so the testing we've performed on ThunderX should mitigate that + regression risk. + + Note: there are issues with older firmware (version varies depending on + platform) where the IPMI device can vanish between reboots, requiring a + BMC reset to recover. This doesn't cause any other problem - drivers + don't load, and it's as if this driver was never added. However, it is + worth noting here in case people google it. Please upgrade your firmware + if you run into this.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1688132 Title: Support IPMI system interface on Cavium ThunderX To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1688132/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
