storing mail across several cyrus partitions

[Artem Bokhan]

> We are using XFS on LVM for years now with cyrus-imapd and it has always
> worked very well. Online expansion with this combination has saved us from
> many hours of downtime over the years.
>
> Simon
>   

Checking several 1Tb-20Tb filesystem with large amount of small files
will take a while... based on my experience xfs sometimes need full
check after power failure, for example.