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!
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https://bugs.launchpad.net/bugs/1308423
Title:
race between mdadm and scsi scan
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