Re: [CentOS] pvmove speed

On Tue, 2008-02-12 at 19:57 -0700, Joseph L. Casale wrote:

<snip>

Iostat shows the system way underutilized even though the lv whose pe's are being migrated is continuously being written (slowly) to.

I finally thought about that last line. Makes since because meta-data tracking must be done as various pieces are moved and a checkpoint is written (note in the man page about being able to restart without providing any parameters). And that is the drive that is failing too! May be a lot of write failures followed by alternate block assignments going on at the hardware level. Just a SWAG (Scientific Wild-Assed Guess).

Thanks! jlc

<snip sig stuff>