I've tested this issue on Vivid with upstream kernel 4.5.0-rc5-next-20160226 and dmesg still shows device-mapper messages. I also checked Wily with kernel 4.2.0-30-generic and errors are there too.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1511534 Title: [Hyper-V] Fibre Channel multipath error message Status in linux package in Ubuntu: Triaged Bug description: Problem statement: Wily (and probably other previous releases with the updated kernels) return a multipath error for vFC (virtual Fibre Channel). Symptoms: The following messages are in the dmesg log during booting: device-mapper: table: 252:4: multipath: error getting device device-mapper: IOCtl: error adding target to table After logging in, run the command: multipath -ll The multipath command does not return any errors, and no new messages are added to the dmesg log or syslog after running the multipath command. Steps to repro ============ Tested with the released Wily (15.10), kernel 4.2.0-16-generic. 1. Create a Wily VM. 2. Boot and install the multipath-tools package. 3. Shutdown and attach a Virtual Fiber Channel adapter and connect it to a virtual SAN. Note: The host must have a Fiber Channel adapter. Use Hyper-V managers Virtual SAN Manager to create a Virtual Fiber Channel Storage Area Network. 4. Boot the VM. 5. Issue the following command to see any errors were reported during the boot. dmesg | grep -i error You should see the following two error: device-mapper: table: 252:4: multipath: error getting device device-mapper: IOCtl: error adding target to table Otherwise, the vFC disks are usable and show no issues at a use test case. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1511534/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
