[Bug 136252] Re: [->UUIDudev] mdadm.conf w/o ARRAY lines but udev/mdadm not assembling arrays. (boot & hotplug fails)
Dmitrijs Ledkovs
launchpad at surgut.co.uk
Mon Jun 25 17:30:57 UTC 2012
** No longer affects: mdadm (Ubuntu Lucid)
** No longer affects: mdadm (Ubuntu Maverick)
** Changed in: mdadm (Ubuntu)
Status: In Progress => Confirmed
** Changed in: mdadm (Ubuntu)
Assignee: Dmitrijs Ledkovs (dmitrij.ledkov) => (unassigned)
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https://bugs.launchpad.net/bugs/136252
Title:
[->UUIDudev] mdadm.conf w/o ARRAY lines but udev/mdadm not assembling
arrays. (boot & hotplug fails)
Status in “mdadm” package in Ubuntu:
Confirmed
Bug description:
Binary package hint: mdadm
Hi,
I could not boot from my /dev/md1 -> /dev/vg01/lv_root partition,
because the initrd could not assemble the md0 and md1 devices. After
reading mdadm.conf, I added these two lines to my config:
# definitions of existing MD arrays
ARRAY /dev/md0 devices=/dev/sda1,/dev/sdb1
ARRAY /dev/md1 devices=/dev/sda5,/dev/sdb5
and updated initramfs. After this, the system started normally. Before
figuring out this, I used dpkg-reconfigure mdadm. So this seems to
produce a non working config, which is copied to the initrd.
Kind regards
Christian
-> However on hotplug systems mdadm.conf should not have to contain
any references to specific DEVICEs, ARRAYs or HOMEHOST.
-> We need to switch to a pure and secure UUID-based raid assembly.
The boot up scripts already support and use UUIDs, but mdadm needs to
be convinced (-> comment #42)
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