Public bug reported: This brings back memories of the venerable old bug #75681
We're booting precise systems with the linux-image-generic-lts-saucy kernel (3.11, as you'll see in the attached boot log), and have some specialised SSD devices we RAID together to form a single block device. Unfortunately, the md autodetection and assembly seems to happen before all of these devices have reported in, causing a halted boot sitting at a busybox prompt (not fun for servers!) As a workaround, we set scsi_mod.scan=sync in the kernel boot options, which makes boot block on the scsi scan. I'm not sure that's the best solution, but it felt the most appropriate at the time! ** Affects: mdadm (Ubuntu) Importance: Undecided Status: Confirmed ** Attachment added: "mdadm.txt" https://bugs.launchpad.net/bugs/1308423/+attachment/4085214/+files/mdadm.txt ** Description changed: This brings back memories of the venerable old bug #75681 We're booting precise systems with the linux-image-generic-lts-saucy kernel (3.11, as you'll see in the attached boot log), and have some specialised SSD devices we RAID together to form a single block device. Unfortunately, the md autodetection and assembly seems to happen before all of these devices have reported in, causing a halted boot sitting at a busybox prompt (not fun for servers!) - Essentially we need to set scsi_mod.scan=sync in the kernel boot - options, + As a workaround, we set scsi_mod.scan=sync in the kernel boot options, + which makes boot block on the scsi scan. I'm not sure that's the best + solution, but it felt the most appropriate at the time! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1308423 Title: race between mdadm and scsi scan To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/1308423/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs