[linux-lvm] Internal error: Maps lock

Milan Broz mbroz at redhat.com
Wed Aug 25 11:35:31 UTC 2010

On 08/25/2010 12:21 PM, Alexander Skwar wrote:
> Hello again.
> I'm now running into another problem:
> + /sbin/lvm lvcreate --permission r --snapshot /dev/Sys/Home --name
> Home-Backup_Snapshot --extents 15%ORIGIN
>   Internal error: Maps lock 14004224 < unlock 14266368
>   Logical volume "Home-Backup_Snapshot" created
> What does this "Internal error" mean? Did it actually cause any harm?

No, you can ignore it.

And update kernel to next minor release ( in your case) which fixes it.

It is side effect of security fix in kernel, see this commit which fixed it


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