[Bug 1171945] Re: Nested RAID levels aren't started after reboot
I do not see a message like "The disk drive for /... is not ready yet or not present" on my system. I'm using a "real" installation (no VM) of 14.04.1 on a spinning disk and I do not use lvm. I'm guessing that this message appears because lvm has to wait for mdadm to assemble the raid. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1171945 Title: Nested RAID levels aren't started after reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/1171945/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1171945] Re: Nested RAID levels aren't started after reboot
** Attachment added: "/etc/udev/rules.d/85-mdadm.rules" https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/1171945/+attachment/4176464/+files/85-mdadm.rules -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1171945 Title: Nested RAID levels aren't started after reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/1171945/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1171945] Re: Nested RAID levels aren't started after reboot
I am also affected by this regression.
It looks like Wheezy disables udev for md and uses an rc-script for assembling
at boot; therefore it will not automatically assemble arrays after boot.
Trusty assembles real devices during and after boot, but seems to ignore
virtual devices like /dev/md0.
So I added a new rule for virtual devices to the existing udev rules in
Trusty. I created /etc/udev/rules.d/85-mdadm.rules with this single line
rule:
SUBSYSTEM=="block", ACTION=="add|change",
ENV{ID_FS_TYPE}=="linux_raid_member", DEVPATH=="*/virtual/*",
RUN+="/sbin/mdadm --incremental $tempnode"
This rule (plus the existing ones) assemble my nested raid during boot
or any time later, but might not work for the root filesystem unless a
initramfs-tools/hooks script is created (not tested).
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https://bugs.launchpad.net/bugs/1171945
Title:
Nested RAID levels aren't started after reboot
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