Anyone had a problem with EnhanceIO over LVM?

[rezass]

In eio_conf.c file there is a comment which makes me worried about using LVM for caching device.
Anyone experienced any problems due to the priority of reboot notifiers?
Is using EIO over LVM safe?

/*
 * The notifiers are registered in descending order of priority and
 * executed in descending order or priority. We should be run before
 * any notifiers of ssd's or other block devices. Typically, devices
 * use a priority of 0.
 * XXX - If in the future we happen to use a md device as the cache
 * block device, we have a problem because md uses a priority of
 * INT_MAX as well. But we want to run before the md's reboot notifier !
 */

[pemer]

Hi,
currently you get problems if you install a Windows system on KVM in a LVM Image. NTFS gets 100% an error if write-back is set and the windows system drops strange error messages.