------- Comment From [email protected] 2025-06-07 16:08 EDT------- Found a possible fix for this bug ===========================
I tried adding multipath module to the installer initrd via initramfs- tools. This had the effect of initializing multipath during early initrd and before dm-multipath and lvm were initialized. With this change ( also a possible bug fix in initramfs-tools described below ) the dm- multipath disks were properly probed and recognized by probert. Possible issue with initramfs-tools =============================== I see initramfs-tools ( to be more accurate ubuntu's multipath-tools package) only add two scripts: * init-top to invoke multipathd * local-bottom to kill the instance of multipathd However since local-bottom script will only be invoked if initrd is directly booting from a multipath disk hence its never invoked during installation and running instance of multipathd is never killed. This has an unfortunate side effect of interfering with curtin's multipathd service which fails due to an existing instance of multipathd running. Fixing the possible issue with initramfs-tools and multipath-tools ======================================================== To fix this, I copied the local-bottom copy of multipath script to 'init-bottom' which would be invoked before curtin's init is invoked. This change ensured that early-init instance of multipathd will be terminated and new instance of multipath.service from curtin comes up fine. Changes suggested ================ * Add multipath module to installer initrd via initramfs-tools. So that multipath volumes are initialized before lvm is initialized. * Update multipath-tools to also add a init-bottom script to initramfs-tool scripts so that early-initrd instance of multipathd is terminated before curtin's multipathd daemon is invoked. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2080474 Title: ubuntu installation failing for systems having SAN disk To manage notifications about this bug go to: https://bugs.launchpad.net/subiquity/+bug/2080474/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
