raid disappearing mdadm: cannot get array info

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Hi.

I have several raids created on my Linux box and one of them has disappeared from /proc/mdstat.

The devices part of this raid are logical volumes and work fine.

When I try to fail one of the devices from the raid I get the following message:
$mdadm /dev/md1744 --fail /dev/storage/disk1

mdadm: cannot get array info for /dev/md1744


This message is different form the one you get when the raid has not been created:
mdadm: error opening /dev/mdXX: No such file or directory.

So md1744 must still in some sense, even though it was not listed in /proc/mdstat

The system where I hit this problem has enough RAM and is not being heavily utilized.


I am using mdadm version 2.6.3 on Ubuntu kernel 2.6.24-24.


Any ideas on this issue are highly appreciated.


Juan Aristizabal
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