| 2014-06-29 19:05:43 |
vak |
description |
Hi all,
probably the issue is caused by changing the SATA-port where RAID disks were originally attached -- this is the only thing that happened before my Ubuntu 14.04 (kernel-3.13.0-27) became unbootable.
During the boot the OS runs into infinite loop reporting from time to time these:
incrementally starting raid arrays
mdadm: Create user root not found
mdadm: create group disk not found
incrementally started raid arrays
Since mdadm is in initrd image, I don't even know how to skip mdadm -- workarounds are very welcome, please!
For example, renaming /etc/mdadm/mdadm.conf in initrd image didn't help, mdadm then just repeats infinitely without group/user-related errors:
incrementally starting raid arrays
incrementally started raid arrays
incrementally starting raid arrays
incrementally started raid arrays
...
Disks are successfully assembled into a RAID under LiveCD Ubuntu 13 (yes , i have only old CD here)
Why I consider this a bug? because my RAID-array is needed at application level, not on OS-level (e.g. it is not mounted as / or /boot). So, if one can't boot into OS it is a serious bug. Last but not least, I was never choosing to put mdadm into initramfs, so it is a decision taken by default that leads to not-bootable system... |
Hi all,
probably the issue is caused by changing the SATA-port where RAID disks were originally attached -- this is the only thing that happened before my Ubuntu 14.04 (kernel-3.13.0-27) became unbootable.
During the boot the OS runs into infinite loop reporting from time to time these:
incrementally starting raid arrays
mdadm: Create user root not found
mdadm: create group disk not found
incrementally started raid arrays
Since mdadm is in initrd image, I don't even know how to skip mdadm -- workarounds are very welcome, please!
For example, renaming /etc/mdadm/mdadm.conf in initrd image didn't help, mdadm then just repeats infinitely without group/user-related errors:
incrementally starting raid arrays
incrementally started raid arrays
incrementally starting raid arrays
incrementally started raid arrays
...
Disks are successfully assembled into a RAID under LiveCD Ubuntu 13 (yes , i have only old CD here)
Why I consider this a bug? because my RAID-array is needed at application level, not on OS-level (e.g. it is not mounted as / or /boot). So, if one can't boot into OS it is a serious bug. Last but not least, I was never choosing to put mdadm into initramfs, so it is a decision taken by default that leads to not-bootable system...
UPDATE1:
in scripts/mdadm-functions of initrd image i see this:
mountroot_fail()
{
message "Incrementally starting RAID arrays..."
if mdadm --incremental --run --scan; then
message "Incrementally started RAID arrays."
return 0
else
if mdadm --assemble --scan --run; then
message "Assembled and started RAID arrays."
return 0
else
message "Could not start RAID arrays in degraded mode."
fi
fi
return 1
}
i tried 'mdadm --incremental --run --scan -c <path to etc/dmadm/dmadm.conf of initrd image> -v' and it exits silently without creating /dev/md/127 as I have expected.
Whereas
sudo mdadm --assemble --run --scan -c ./etc/mdadm/mdadm.conf -v
Does the job. Is it an issue just of incremental mode? |
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