I also thought that LVM is unsafe for WAL logs and file system journals with disk write cache -- it doesn't flush the disk write caches correctly and build write barriers.
As pointed out here: http://groups.google.com/group/pgsql.performance/browse_thread/thread/9dc43991c1887129 by Greg Smith http://lwn.net/Articles/283161/ On Thu, Sep 11, 2008 at 3:41 PM, Alan Hodgson <[EMAIL PROTECTED]> wrote: > On Thursday 11 September 2008, [EMAIL PROTECTED] wrote: > > while I agree with you in theory, in practice I've seen multiple > > partitions cause far more problems than they have prevented (due to the > > partitions ending up not being large enough and having to be resized > > after they fill up, etc) so I tend to go in the direction of a few large > > partitions. > > I used to feel this way until LVM became usable. LVM plus online resizable > filesystems really makes multiple partitions manageable. > > > -- > Alan > > -- > Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-performance >
