Bug#367125: ext2_get_inode: bad inode number

["Peter Kruse" <pjodrr@gmail.com>]

Hello,

at the moment our server prints regularily like two times a minute the same message to kern.log:

EXT2-fs error (device dm-5): ext2_get_inode: bad inode number: 30130240

I checked and the inode really does not exist on the specified device (dm-5 is
the device with minor number 5 under /dev/mapper).
How can I find out which process is trying to access this inode?
I thought I use strace, but attaching to nfsd is not possible, even as root.

Regards,

    Peter