[Lustre-discuss] SSD caching of MDT

2010-08-19 Thread Gregory Matthews
Article by Jeff Layton: http://www.linux-mag.com/id/7839 anyone have views on whether this sort of caching would be useful for the MDT? My feeling is that MDT reads are probably pretty random but writes might benefit...? GREG -- Greg Matthews01235 778658 Senior Computer Systems

Re: [Lustre-discuss] SSD caching of MDT

2010-08-19 Thread LaoTsao 老曹
IMHO, SSD has more IOPS then disks and has larger capacity then raid/nvram so it seems that SSD should help in MDS, the U want SSD in dual host env to support failover? regards On 8/19/2010 8:29 AM, Gregory Matthews wrote: Article by Jeff Layton: http://www.linux-mag.com/id/7839 anyone

Re: [Lustre-discuss] SSD caching of MDT

2010-08-19 Thread Andreas Dilger
On 2010-08-19, at 7:27, LaoTsao 老曹 laot...@gmail.com wrote: IMHO, SSD has more IOPS then disks and has larger capacity then raid/nvram so it seems that SSD should help in MDS, the U want SSD in dual host env to support failover? regards On 8/19/2010 8:29 AM, Gregory Matthews wrote:

Re: [Lustre-discuss] SSD caching of MDT

2010-08-19 Thread Robin Humble
On Thu, Aug 19, 2010 at 01:29:37PM +0100, Gregory Matthews wrote: Article by Jeff Layton: http://www.linux-mag.com/id/7839 anyone have views on whether this sort of caching would be useful for the MDT? My feeling is that MDT reads are probably pretty random but writes might benefit...? if you