[linux-lvm] LVM2 strangeness.

[Joe Thornber]

On Thu, May 29, 2003 at 02:49:41PM -0700, Max Kalika wrote:
> Right now during an rsync of a huge mailstore (lots of small files) from
> the mail server, the performance on the backup server degrades severly (up
> to 12 1min load ave. and higher) and I'm seeing lots of the following in
> the kernel log:
> 
>   May 29 14:14:15 butters invalidate: busy buffer
>   May 29 14:14:15 butters invalidate: busy buffer
>   May 29 14:14:15 butters invalidate: busy buffer
>   May 29 14:14:15 butters invalidate: busy buffer
>   ... on and on and on ...

This is due to us trying to flush the LVM metadata writes to a device
that also contains a mounted filesystem, it should only happen when
you change your LVM configuration (eg, take another snapshot).  We're
using O_DIRECT in the next release, so they will go away soon.

- Joe