Public bug reported: I work at NetApp and we have a storage array that has dual SAS controllers that present multiple paths to a single volume. We usually are able to boot from SAN using SAS and utilize multipath on the root volume. I have tried everything I can think of and don't get this fully working. Here's what I have tried:
1. Installed to a single path (sda) and booted then tried to add the two paths to root into multipath. a. Followed https://help.ubuntu.com/lts/serverguide/multipath-setting-up-dm-multipath.html "Setting Up DM-Multipath" Could not get multipath to manage the paths. b. Even tried the instructions from RedHat: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/dm_multipath/move_root_to_multipath Manually adding the paths to multipath and then rebuilding the initrd, still no dice. 2. Reinstall. After many struggles I am able to install using the boot parameter: install disk-detect/multipath/enable=true a. Install completes but the tools are unable to write a boot loader to the multipath disk. b. Tried booting into a rescue disk to write bootloader and still unsuccessful. Should Ubuntu support boot from SAN using a multipath volume on the SAS protocol (Broadcom 12G HBAs)? ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1870146 Title: Unable to successfully boot from SAN with multipath SAS volume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1870146/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
